Program
 
Sun Jul 06 2025
13:00 - 17:00
Arrival and Check In
18:00 - 19:30
Dinner
19:30 - 19:45
Welcome to the American Conference on Inorganic Nanoscience - Jonathan Owen
Colloidal Quantum Dots
Chair: Kathryn Knowles
19:45 - 20:20
Dots-I1
Talapin, Dmitri
Synthesis of Colloidal Semiconductor Nanocrystals in Molten Inorganic Salts —A Worthwhile Endeavor?
Talapin, Dmitri
Authors
Dmitri Talapin a, Justin C. Ondry a, Zirui Zhou a, Jun Hyuk Chang a, Ruiming Lin a
Affiliations
a, University of Chicago, 929 East 57th st, Chicago, 60637, US
Abstract

Many functional nanomaterials used for displays, lighting, photodetectors, catalysts, and other applications are synthesized by colloidal methods. The scope of chemical transformations accessible to colloidal chemists is determined by the thermal and chemical stability of the solvents and surfactants employed. For example, very few traditional solvents can tolerate temperatures above 400 °C, whereas the temperatures used in CVD and MBE growth of GaAs and other important semiconductors typically exceed 500 °C.
To expand the range of synthesizable nanomaterials, we are developing a comprehensive understanding of a novel class of colloidal systems: colloids in molten inorganic salts. Nanoparticles of various transition metals, semiconductors, oxides, and magnetic materials can form stable colloids in these highly unusual solvents. Their colloidal stability in molten salts cannot be explained by traditional electrostatic and steric stabilization mechanisms. Our experimental and computational studies suggest that long-range ion correlations in the molten salt near the nanocrystal interface play a crucial role.
In parallel with our fundamental exploration of these new colloidal systems, molten salts broaden the scope for solution-based synthesis of many nanomaterials that have been beyond the reach of traditional colloidal chemistry. We have used molten salts to synthesize colloidal GaAs, GaP, GaN, InₓGa₁₋ₓP, InₓGa₁₋ₓAs, and InₓGa₁₋ₓSb quantum dots, which resisted numerous synthetic attempts for decades. Most recently, we have turned toward the synthesis of colloidal nitride nanomaterials. By advancing colloidal chemistry in molten salts, we aim to enable synthetic routes to functional materials previously regarded as unsynthesizable by colloidal methods.

20:20 - 20:55
Dots-I2
Kovalenko, Maksym
ETH Zurich and Empa, CH
The first decade of colloidal perovskite quantum dots: Quo Vadis?
Kovalenko, Maksym
ETH Zurich and Empa, CH

Maksym Kovalenko has been a tenure-track Assistant Professor of Inorganic Chemistry at ETH Zurich since July 2011 and Associate professor from January 2017. His group is also partially hosted by EMPA (Swiss Federal Laboratories for Materials Science and Technology) to support his highly interdisciplinary research program. He completed graduate studies at Johannes Kepler University Linz (Austria, 2004-2007, with Prof. Wolfgang Heiss), followed by postdoctoral training at the University of Chicago (USA, 2008-2011, with Prof. Dmitri Talapin). His present scientific focus is on the development of new synthesis methods for inorganic nanomaterials, their surface chemistry engineering, and assembly into macroscopically large solids. His ultimate, practical goal is to provide novel inorganic materials for optoelectronics, rechargeable Li-ion batteries, post-Li-battery materials, and catalysis. He is the recipient of an ERC Consolidator Grant 2018, ERC Starting Grant 2012, Ruzicka Preis 2013 and Werner Prize 2016. He is also a Highly Cited Researcher 2018 (by Clarivate Analytics).

Authors
Maksym Kovalenko a
Affiliations
a, ETH Zürich, Vladimir Prelog Weg 2, 8093 Zürich, CH
Abstract

This year marks the first decade of colloidally synthesized lead halide perovskite quantum dots (LHP QDs), defining QDs as size- and shape-uniform ensembles with tunable quantum confinement and single-photon emission. Gradually, during this period, practically the entire compositional within a general formula APbX3 was thoroughly studied, with A being cesium (Cs), methylammonium (MA), formamidinium (FA), and azeridinium (AZ) was produced as high-quality nanocrystals. This journey is, arguably, at its very beginning. The LHP QDs are vastly different from conventional, more covalent semiconductors – they are ionic compounds with much lower formation energies, entropically stabilized, and structurally dynamic. The design of surface capping ligands turned out to be decisive for their stabilization at the nanoscale and for taming their photophysics. Currently, LHP NCs are prototyped as primary green emitters for television displays owing to facile and scalable production, higher emissivity-per-mass under blue excitation, and narrow emission linewidth. Their excitonic characteristics exceed initial expectations in many regards, opening opportunities as quantum light sources. In particular, at cryogenic temperatures, LHP QDs exhibit long excitonic coherence times, which start to match the fast sub-100 ps radiative rates. Both characteristics are optimized, to our surprise, in larger CsPbX3 QDs beyond the quantum confinement, namely, 20-40 nm, owing to the single-photon superradiance effect (giant oscillator strength at the single-exciton per NC regime). Single-component and multicomponent QD superlattices exhibit collective emission, known as superfluorescence, characterized by the oscillating, ultrafast (10-30 ps) radiative decays. This presentation will walk you through both the most essential progress over this first decade, including our current work, and outline future prospects. 

20:55 - 23:00
Social Hour
 
Mon Jul 07 2025
07:30 - 08:30
Breakfast
Advanced Spectroscopic and Structural Characterization of Nanostructured Materials
Chair: DONG HEE Son
09:00 - 09:35
Materials-I1
dukovic, gordana
University of Colorado Boulder, US
Elucidating how nanocrystals drive multielectron redox chemistry
dukovic, gordana
University of Colorado Boulder, US, US
Authors
gordana dukovic a
Affiliations
a, University of Colorado Boulder, US
Abstract

The synthetic tunability of electronic structure and surface chemistry of semiconductor nanocrystals make them attractive light absorbers for light-driven chemistry. Nanocrystals can drive a variety of photochemical transformations and they have been coupled with redox enzymes to drive reactions like H2 generation, CO2 reduction, and N2 reduction. In this talk, I will focus on our efforts to understand the properties of semiconductor nanocrystals that are essential for these light-driven transformations.

09:35 - 10:10
Materials-I2
King, Sarah
University of Chicago
Visualizing Plasmon Polaritons in Anisotropic Nanomaterials
King, Sarah
University of Chicago, US
Authors
Sarah King a, Atreyie Ghosh a, Calvin Raab a, Joseph Spellberg a
Affiliations
a, University of Chicago, 929 East 57th st, Chicago, 60637, US
Abstract

Plasmonic excitations in nanomaterials enable strong light-matter coupling, electromagnetic field enhancement, and novel energy transfer pathways. While localized surface plasmon resonances are well-studied, the controlled manipulation of surface plasmon polaritons (SPPs) in two-dimensional materials presents both fundamental challenges and opportunities for next-generation optical technologies. In this talk, I will demonstrate how polarization-dependent, time-resolved photoemission electron microscopy (PD-TR-PEEM) enables direct visualization of SPP propagation with nanometer spatial and femtosecond temporal resolution in layered 2D materials. Our investigations reveal conventional SPP behavior in transition metal carbides and nitrides (MXenes), while identifying hyperbolic plasmon polaritons (HPPs) with extremely long propagation lengths in the anisotropic layered material MoOCl₂. These HPPs exhibit unique electromagnetic properties including directional propagation and enhanced light confinement not observed in isotropic materials. I will discuss how detailed theoretical and computational modeling of interfacial interactions is critical to describing SPP behavior in these systems and highlight emerging opportunities for exploiting hyperbolic dispersion in applications ranging from advanced sensing to quantum information processing and nanophotonic devices.

 

10:10 - 10:30
Coffee Break
Advanced Spectroscopic and Structural Characterization of Nanostructured Materials
Chair: DONG HEE Son
10:30 - 11:05
Materials-I1
Schaller, Richard
Department of Chemistry, Northwestern University, United States
Remarkable Properties of Semiconductor Nanocrystals at Elevated Pump Intensity
Schaller, Richard
Department of Chemistry, Northwestern University, United States, US

Since 2010, Richard D. Schaller has held a joint appointment as both a research scientist in the Center for Nanoscale Materials at Argonne National Lab and as an assistant professor in the Department of Chemistry at Northwestern University. Schaller’s research focuses on spectroscopy and physical chemistry of semiconductor nanomaterials From 2002 to 2010, Schaller was a Reines Distinguished Postdoctoral Fellow and then a permanent technical staff member at Los Alamos National Lab with Dr. Victor Klimov. Schaller obtained his PhD in physical chemistry from UC Berkeley in 2002 with Prof. Richard Saykally in nonlinear optics and near-field optics. In 2012, he was selected by the National Academy of Sciences as a Kavli Fellow participant.

Authors
Richard Schaller a, b, Carly E. Haas b, Alexandra Brumberg b, Nicolas E. Watkins b, Benjamin T. Diroll a
Affiliations
a, Argonne National Lab
b, Northwestern University
Abstract

Colloidal semiconductor nanocrystals are prized in optoelectronics for their bandgap tunability, high photoluminescence quantum yield, and ease of colloidal processing. However, rapid nonradiative Auger recombination (AR) can negatively impact device efficiencies at high excitation intensities. In bulk semiconductors, AR is temperature-dependent, but in zero-dimensional quantum dots (QDs), it becomes temperature-independent due to the discretized band structure. The two-dimensional morphology of nanoplatelets (NPLs) complicates predictions of their photophysical behaviors.
We examined temperature dependent excited-state lifetime and fluence-dependent emission in CdSe NPLs, comparing them with QDs. As temperature decreases, the biexciton lifetime in NPLs surprisingly decreases, becoming shorter than trion emission, while emission intensity increases nearly linearly with fluence, indicating dominance of radiative recombination over AR. This contrasts fundamentally with core-only QDs.
Building on this, we found that photoexcitation of high-density 4 or 5 monolayer (ML) thick CdSe NPL films at temperatures below 200K results in pump-intensity-dependent, superlinear, and progressively red-shifted light output due to amplified spontaneous emission (ASE) from polyexcitonic species, distinct from biexcitonic ASE. These polyexcitonic species, known as "quantum droplets," form when multiexciton binding energy exceeds thermal energy fluctuations.
The ASE threshold for close-packed films decreases significantly with lower temperatures, attributed to extrinsic (trapping) and intrinsic (phonon-derived line width) factors. For pump intensities exceeding the ASE threshold, intense emission shifts to lower energy, particularly when the film temperature is ≤200 K. In contrast, NPLs diluted in an inert polymer suppress both biexcitonic ASE and low-energy emission, indicating reliance on high chromophore density and rapid, collective processes.
These findings enhance understanding of quantum droplet optical nonlinearities and the utility of photogenerated excitons and multiexcitons in optoelectronic applications.
 

11:05 - 11:40
Materials-I2
Chen, Qian
University of Illinois Urbana-Champaign
Pathway Engineering of Complex Nanoparticle Assemblies
Chen, Qian
University of Illinois Urbana-Champaign, US
Authors
Qian Chen a, Zuochen Wang a, Jiahui Li a, Chang Liu a, Xiaoming Mao b
Affiliations
a, University of Illinois Urbana Champaign
b, University of Michigan, 930 N University, Ann Arbor, 0, US
Abstract

In this talk, I will discuss our recent efforts on utilizing liquid-phase TEM imaging and associated machine-learning or computational simulation methods to map the fundamental forces involved in the equilibrium and out-of-equilibrium assemblies of nanoparticles. In equilibrium assembly, we study the nonclassical nucleation pathways, the growth habits, and the phononic relaxation of the nanoparticle self-assemblies. We show that colloidal interactions at the nanoscale can be mapped from the statistical sampling of single particle trajectories, or as effective springs by fitting phonon dispersion spectra. Going beyond equilibrium dynamics, we also study the external field driven assembly of nanoparticles, where electroosmosis effects drive the nanoparticles into active “swarms” with rapidly-changing patterns. We will show new structural control and new functional relevance in these particulate systems, when we consider both the colloidal interactions and all the other factors such as diffusivity, many-body effects, and ionic flows. 

11:40 - 12:00
Materials-T1
Crane, Matthew
Colorado School of Mines
Understanding and tuning hot carrier generation and transfer in plasmonic semiconductor nanomaterials
Crane, Matthew
Colorado School of Mines, US
Authors
Matthew Crane a, Sara R. Russo a, Lauren C. Cisneros a, Brandon Reynolds a, Matthew J. Crane a
Affiliations
a, Colorado School of Mines, Department of Chemical and Biological Engineering,
Abstract

Degenerately doped semiconductor nanocrystals exhibit tunable localized surface plasmon resonances with strong optical absorption cross sections and band gaps. Upon excitation, these materials produce non-equilibrium carrier distributions that rapidly relax, offering a brief window for utilization. These features mark plasmonic nanocrystals as promising candidates for new applications that require efficient light absorption and highly directed energy and carrier utilization, such as photodetectors, photovoltaics, and photocatalysts, if we can understand and engineer efficient transport mechanisms. To date, studies on hot carrier technologies have focused on coinage metals, which have orders of magnitude higher carrier concentrations than semiconductor plasmonic nanomaterials. It is unclear how lower carrier concentrations influence hot carrier generation or if transfer is feasible in these systems.

Here, we investigate hot carrier generation and transfer from prototypical tin-doped indium oxide (ITO) nanocrystals to adsorbates as a model system for harvesting and utilizing light in plasmonic semiconductor nanocrystals. Using transient absorption spectroscopy, we track carrier and energy transfer from ITO nanocrystals to adsorbates and evaluate the impact of aliovalent dopant concentration, wavelength, and energy level alignment. We find hot thermal carriers, rather than athermal carriers, transfer to adsorbates with external quantum efficiencies ~ 1%. Two-temperature and Marcus Theory modeling show that this is due to the low carrier concentration of ITO. Combining these results, we propose general design rules to optimize carrier energy transfer from plasmonic semiconductors including scenarios in which hot thermal carriers may transfer more efficiently than athermal carriers. We conclude with new results demonstrating unique pathways for semiconductor plasmonic nanocrystals.

12:00 - 12:20
Materials-I3
Son, Dong Hee
Excitons of strongly confined perovskite QDs in electronically coupled superlattice and in micro-ring resonance cavity
Son, Dong Hee
Authors
Dong Hee Son a, Lanyin Luo b
Affiliations
a, Department of Chemistry, Texas A&M University, College Station, Texas 77840, United States
b, Department of Physics and Astronomy, Texas A&M University
Abstract

Dynamics and spectral features of exciton emission in strongly quantum-confined metal halide quantum dot systems on two different platforms will be presented. The first involves cooperative photon emission in the form of superradiance in an electronically coupled superlattice, which exhibits polarized superradiance. The second concerns the emission of bright and dark excitons from quantum dots fabricated on a micro-ring cavity, which shows an unequal Purcell effect on bright and dark excitons.

12:20 - 13:30
Lunch
13:30 - 16:00
Free Time
16:00 - 18:00
Poster Session I
18:00 - 19:30
Dinner
Machine Learning and Industrial Applications of Quantum Dots
Chair: Brandi Cossairt
19:30 - 20:05
Dots-I1
Abolhasani, Milad
North Carolina State University
Colloidal Nanoscience Acceleration with Self-Driving Labs
Abolhasani, Milad
North Carolina State University, US
Authors
Milad Abolhasani a
Affiliations
a, North Carolina State University, Partners Way, 911, Raleigh, US
Abstract

Discovering and improving new semiconductor nanomaterials made in solutions is often a slow process that relies on trial and error. Traditional methods using batch reactors can be inconsistent, especially with heating and mixing, making it hard to explore all the possible ways to create and process these materials. Even though colloidal semiconductor nanomaterials have remarkable properties and are widely used in energy, quantum, and chemical technologies as well as photonic devices, we need better approaches to speed up their discovery and development. Recent advances in reaction miniaturization, automated experiments, in-situ multi-modal characterization, and artificial intelligence (AI)-assisted experimentation offer exciting new opportunities to accelerate nanomaterials discovery and development. In my talk, I'll present how combining continuous-flow reactors with autonomous experimentation—what we call a Self-Driving Fluidic Lab—can accelerate research in colloidal nanoscience. By breaking down the steps of making nanomaterials and processing into separate modules, using methods that can run up to 100 experiments per minute, and applying AI to help model the processes in real-time and make informed decisions about future experiment(s), we can efficiently navigate complex and high-dimensional experimental spaces. Specific examples will be shared to show how these self-driving fluidic labs can autonomously and precisely create metal halide perovskites, as well as II–VI and III–V semiconductor nanocrystals, reducing the development timeline from more than a decade to just a few weeks.

20:05 - 20:40
Dots-I2
Infante, Ivan
BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, Spain.
Machine Learning Force Fields for Quantum Dots: Challenges and Opportunities
Infante, Ivan
BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, Spain., ES
Authors
Ivan Infante a, Mario Fernandez Pendas a, Abdessamad El Adel a, Muhammed Uxman a, Zain Ul Abideen a
Affiliations
a, BCMaterials, Spain
Abstract

Colloidal quantum dots (QDs) exhibit complex electronic, optical, and structural properties, making them essential in optoelectronics, photovoltaics, and nanomedicine. Despite advances in understanding QD surface chemistry and trap state formation, key questions remain, particularly regarding surface effects on electronic properties. Addressing these challenges requires accurate theoretical modeling.
In our group, extensive density functional theory (DFT) studies have explored QDs up to ∼4.5 nm, revealing that increasing system size leads to band gap collapse and facet-specific localization of frontier orbitals. We also found that introducing surface vacancies induces reconstructions that widen the band gap and delocalize charge carriers, emphasizing the critical role of surface geometry in defining QD properties. However, DFT-based approaches are computationally expensive, limiting their application to larger, more realistic systems and longer timescales.
To overcome these limitations, we are preparing to employ machine learning force fields (MLFFs) trained on DFT datasets. A key aspect of this approach is the inclusion of long-range electrostatic interactions during the training process to ensure the structural stability of QDs, which is crucial for accurately capturing their surface and bulk properties. These MLFFs aim to provide DFT-level accuracy at significantly reduced computational costs, enabling the study of larger QD systems and their dynamic behavior over extended timescales.
We anticipate applying ML-based models to various QD compositions, including CdSe, InP, PbSe, and CsPbBr₃, facilitating more efficient investigations into QD growth and optoelectronic integration. This transition highlights the transformative potential of machine learning in advancing the computational toolkit for nanomaterial design.
 

20:40 - 21:00
Dots-I3
Palomaki, Peter
Palomaki Consulting, LLC
What do we need from QDs in modern display technology?
Palomaki, Peter
Palomaki Consulting, LLC, US
Authors
Peter Palomaki a
Affiliations
a, Palomaki Consulting, LLC, 17 Castlewood Dr, Billerica, MA, US
Abstract

Maturation of QDs in displays has led to several implementation methods using QDs as down-converters, each with their own advantages, drawbacks, and challenges to implementation. QD films, extruded plastic diffusers, and QD inks directly on top of OLED pixels have all become commonplace in displays. As the regulatory landscape and technical requirements evolve, QDs must evolve. Future implementation such as electroluminescent QLED has the potential to disrupt the display industry, but after decades of research this technology still falls short. This talk will provide a commercial and regulatory status update of QDs in display, and needs of the display community that are addressable by fundamental QD-related research.

21:00 - 21:20
Dots-I4
McDaniel, Hunter
UbiQD, Inc.
Mass Production of Quantum Dots
McDaniel, Hunter
UbiQD, Inc., US

Hunter McDaniel founded UbiQD in 2014, and serves as CEO. He previously worked at Los Alamos National Laboratory in the New Mexico mountains. Hunter has a PhD in Materials Science and Engineering from University of Illinois, and prior to that he studied Physics and Electrical Engineering at UC Santa Barbara.

Authors
Hunter McDaniel a, Matt Bergren a
Affiliations
a, UbiQD, Inc., Eastgate Drive, 134, Los Alamos, US
Abstract

In recent years, CuInSeS/ZnS semiconductor quantum dots (QDs) have shown improvements that have unlocked new capabilities and end markets. These materials exhibit tunable photoluminescence in the visible and near-IR, with near unity quantum yield. They can have efficient broad emission, but also narrow emission, large Stokes shifts, and high optical extinction coefficients.  Moreover, for applications in sunlight, their scalable synthesis (enabling low cost) and good stability, both in terms of field us and manufacturing, enable this class of dots to be deployed at scale in cost-sensitive applications like solar energy. UbiQD, a materials technology and QD manufacturing company spun out of Los Alamos National Laboratory, has pioneered the industrialization and scale-up of these materials, starting with critical end uses related to spectrum optimization for greenhouses and solar energy. This presentation will give an overview of how QDs are being used to enhance spectral quality of sunlight for improved photovoltaics (energy) and photosynthesis (food), which is driving a new order of magnitude of QD demand and production. We’ll discuss sunlight optimization and how the industry is adapting to delver in excess of 100 MT of QD solids per year for non-display applications.

21:20 - 23:00
Poster Social Hour
 
Tue Jul 08 2025
07:30 - 08:30
Breakfast
Synthesis and Chemistry of Chalcogenide, Pnictide, and Perovskite QDs
Chair: Amy Prieto
09:00 - 09:35
QDs-I1
Hendricks, Mark
Whitman College
Precursor Chemistry of Metallic and Semiconducting Nanocrystals
Hendricks, Mark
Whitman College, US
Authors
Mark Hendricks a
Affiliations
a, Whitman College, Boyer Avenue, 345, Walla Walla, US
Abstract

Precursor Chemistry of Metallic and Semiconducting Nanocrystals

 

Two of the primary methods used to control the size and shape of nanocrystals include using precursor chemistry to influence precursor conversion rate or the addition of surface-binding ligands. This talk will focus on the chemistry of zinc sulfide nanocrystals, where we have quantitatively measured the precursor conversion rate of a library of substituted thiourea precursors and shown that unlike the cadmium and lead chalcogenides counterparts, zinc sulfide shows little to no influence of precursor conversion rate on nanocrystal size. Instead, adjusting the structure of the zinc precursor can be used to influence the nanocrystal size, likely through a surface effect. Interestingly, while the effect of electronics on the precursor structure is the same across the materials, adjusting the steric bulk of the precursors has an opposite effect for lead sulfide and zinc sulfide. This observation points to differences in the underlying mechanism between the materials. Finally, we will conclude with some work on silver nanocrystals that again emphasizes the role of surface chemistry on influencing nanocrystal shape and size.

 

09:35 - 10:10
QDs-I2
Macdonald, Janet
Vanderbilt University - Department of Chemistry
Phases, Polytypes and Polymorphs: How to make what you want in nanocrystal synthesis
Macdonald, Janet
Vanderbilt University - Department of Chemistry, US
Authors
Janet Macdonald a, Emma Endres a, Andrey Shults b, Tony Peng c, Emma Endres d, Jeremy Espano e
Affiliations
a, Vanderbilt University, Nashville, US
b, Penn State
c, Department of Chemistry, Columbia University, USA
d, Department of Mechanical Engineering and Electrical Engineering, Vanderbilt University, Nashville, US
e, Sandia NL
Abstract

There is a huge diversity of transaction metal chalcogenides, varying in composition and symmetry. When we put reagents in the flask for colloidal synthesis, how do we select for one crystalline phase over another? I will discuss our work with transition metal sulfides and selenides to answer these questions. We use libraries of reagents and ligands to examine kinetic and surface chemistry effects, and careful analysis of the molecular transformations that preclude nanocrystal formation and growth. Or main lessons have been:
1) Ligands change the rules of the game before it even starts.
Often ubiquitous ligands react with our reagents before nanocrystal formation, changing their nature, which in turn influences the final crystalline phase.
2) Structural motifs of the first nucleated phase are often retained in the product phase, even if the stoichiometry is different. Understanding the structural relationships between phases such as cation coordination or anion stacking patterns can be used, in concert with chemical potential and the nucleating phase, to rationally develop syntheses to each of the phases in a family.
3) The structural motif of cation coordination number on the crystal surface can be influenced by ligand coordination. The motif can become translated through the nanocrystal, controlling phase.
4) The over-growth and isolation of metastable polytypes require slow reaction conditions. Diffusion of reagents through the ligand shell is one route.

10:10 - 10:30
Coffee Break
Synthesis and Chemistry of Chalcogenide, Pnictide, and Perovskite QDs
Chair: Amy Prieto
10:30 - 11:05
QDs-I1
Chen, Ou
Brown University
Colloidal Quantum Dots-Based Heterostructure Nanomaterials: Synthesis, Self-Assembly and Photocatalysis
Chen, Ou
Brown University, US
Authors
Ou Chen a, Michael Gruenwald a
Affiliations
a, Brown University, Hope Street, 184, Providence, US
b, University of Utah, 315 S 1400 E Rm 2020, Salt Lake City, 84112, US
Abstract

Colloidal quantum dots (QDs) have been a subject of extensive research for several decades for their unique optical properties and versatile applications. Ongoing refinements in their synthesis have enabled the production of high-quality QDs with precise control over their size, shape, and compositions. Specifically, core-shell and other types of heterostructure QDs have garnered significant attentions, resulting in advancements that enhance their optical properties, morphology control, material stability, and their diverse applications in real-life. In this talk, I will discuss about our works on the synthesis of cadmium-chalcogenide and perovskite-type QDs and QD-metal heterostructure nanomaterials. This includes a discussion on how these anisotropic QDs can be used as fundamental building blocks for constructing intricate superlattice materials. I will also talk about the potential applications of the colloidal QD-metal hybrid nanocrystals in photocatalytic reactions, presenting our experimental findings alongside theoretical insights. 

11:05 - 11:40
QDs-I2
Jeong, Sohee
"Shape-Controlled Colloidal III-V Nanocrystals: Toward Precise Optoelectronic Properties
Jeong, Sohee
Authors
Sohee Jeong a
Affiliations
a, Sungkyunkwan University, Gyeonggi-do, Suwon-si, Jangan-gu, Yulcheon-dong, Seobu-ro, 2066, Suwon-si, KR
Abstract

Shape control in colloidal III-V semiconductor nanocrystals, such as InAs and InP quantum dots, provides a powerful approach to tailor their optoelectronic properties. By precisely tuning synthesis parameters—including ligand selection, reaction kinetics, and precursor chemistry—nanocrystal morphology can be carefully controlled, selectively exposing crystal facets and minimizing surface defects. In this talk, I will highlight recent strategies developed in our group, emphasizing facet-specific reactivity, optimized surface passivation, and controlled precursor manipulation. In particular, modulation of pnictogen precursors through controlled redox chemistry allows refined morphological and compositional precision. Moreover, incorporating Zn significantly enhances surface passivation, reducing trap densities and improving photophysical stability. Special attention will be given to elucidating the relationships among nanocrystal morphology, surface chemistry, and key optoelectronic characteristics, including charge-carrier dynamics, trap state management, and optical absorption.

11:40 - 12:00
QDs-T1
Plass, Kate
Franklin & Marshall College
Consecutive anionic and cationic transformations of copper sulfide nanorods: New design rules and nanoheterostructured materials
Plass, Kate
Franklin & Marshall College, US

Kate Plass is a Professor of Chemistry at Franklin & Marshall College. Kate leads a team of undergraduate student scientists to explore the synthesis of multicomponent nanoheterostructures through post-synthetic transformation and the way this alters the optical properties of materials. She received a B.S. in Chemistry with Honors from Wayne State University doing research under the direction of Robert Levis and a Ph.D. in materials chemistry from the University of Michigan under the direction of Adam Matzger. She worked as a post-doctoral fellow under the direction of Nathan Lewis at the California Institute of Technology. In 2008, she joined the faculty in the Chemistry Department at Franklin & Marshall College and was promoted to associate professor with tenure in 2014 and full professor in 2020. She has received several grants and awards including a NSF CAREER award, the Dreyfus Start-up Award, the Cottrell College Science Award, the ACS Rising Star Award, and the Henry Dreyfus Teacher-Scholar Award.

Authors
Kate Plass a
Affiliations
a, Franklin & Marshall College, PO Box 3003, Lancaster, US
Abstract

Post-synthetic transformations are a means to design nanoparticles that would be difficult to synthesize directly due to their shape, phase, or the presence of multiple chemical components. We have developed two anionic post-synthetic transformations of copper sulfide nanorods to create Cu2-xS/Cu2-xTe and Cu2-xS/Cu2-xSe nanoheterostructures. Tellurium anion exchange creates Cu2-xS/Cu2-xTe nanoheterostructures with various regioselectivities. Selenium transformations proceed either through a dissolution/reprecipitation mechanism to create Cu2-xS/Cu2-xSe nanoheterostructures with various shapes or through an anion exchange mechanism to create Cu2-x(S,Se) alloyed nanorods. Here we present our latest work to understand how we can extend these anionic post-synthetic transformations to develop a variety of nanoheterostructures. We have investigated the results of consecutive cation and anion transformations to reveal new materials design rules. Combination of tellurium anion exchange with cadmium cation exchange alters ion mobility and reveals a combined regioselectivity that is distinct from each individual transformation. Combination of selenium transformation with cadmium cation exchange reveals the importance of the order of when applying consecutive post-synthetic transformations.

12:00 - 12:20
QDs-T2
Hussein, Tariq
University of Cambridge
The Importance of Ligand Exchange in the Early Crystallisation Kinetics of Bright Colloidal Metal Halide Quantum Dots
Hussein, Tariq
University of Cambridge, GB
Authors
Tariq Hussein a, b, Laura Torrente a, Sam Stranks a, b, Bruno Pinho a
Affiliations
a, Department of Chemical Engineering and Biotechnology, University of Cambridge, United Kingdom
b, Cavendish Laboratory, University of Cambridge; Cambridge, UK
Abstract

Metal halide perovskite quantum dots (QDs) are bright narrowband emitters that offer outstanding optoelectronic properties based on size manipulation [1,2]. Despite this, size control has relied on empirical selection of binary acid-base pairs (e.g., trioctylphosphine oxide (TOPO) and oleic acid (OA))  to solubilise precursor metal halide salts (PbX2) alongside unsystematic reaction conditions due to sub-second crystallization rates restricting the evaluation of precursor transformation kinetics thus evolution of QD size (dispersity) [3,4,5]. To address limited access to early-time kinetics and precursor chemistry, a bespoke helical microfluidic platform is developed to spectroscopically (in-situ) monitor the growth evolution of crystallites across three orders of magnitude, from milliseconds to minutes, of synthesis time using dynamic flow ramping [6]. We find that crystallisation proceeds through dissociative ligand interchange in which abstraction of Br anions from PbX2(TOPO)n complexes, via deprotonation of OA, allows the sub-second evolution of PbB species; a predecessor to monomer formation. Through kinetic analysis of preceding steps, modest activation energies (5-15 kJ/mol) are extracted elucidating their fast formation under the availability of excess OA, [TOPO]:[OA] < 1, otherwise restricted through the generation of hydrogen bonded adducts, [TOPO]:[OA] > 1. Moreover, we showcase a simultaneous fast equilibrium between PbX2 and TOPO whereby the degree of coordination (n = 1-4) is found to destabilise Pb-X bonds whilst concurrently strengthening Pb-O restricting TOPO removal hindering QD growth as supported by quantum chemical calculations and 207Pb NMR. In turn, early-stage (300-1000 ms) growth of highly confined quasi-spherical QDs (~2 nm) are accelerated by excess addition of OA whilst increased [TOPO]:[PbX2] depresses growth. Beyond the role in precursor conversion, OA further facilities late-stage (> 5 s) surface reconstruction (ripening) in weakly confined (~8 nm) crystallites. Correlating time-resolved bulk compositional analysis with time-resolved photoluminescence reveals healing of Cs-vacancies yielding a twofold increase in PLQY, 20% to 50%. Overall, our study exacerbates the kinetic role of solubilising ligands in synthesising crystallising bright and monodispersed QDs of the desired size.

12:20 - 13:30
Lunch
13:30 - 16:00
Free Time
16:00 - 18:00
Poster Session II
18:00 - 19:30
Dinner
Emerging Areas in Nanoscience
Chair: Joey Luther
19:30 - 20:05
Nanoscience-I1
Zeng, Chenjie
University of Florida
Precision synthesis of semiconductor nanoclusters via cation exchange
Zeng, Chenjie
University of Florida
Authors
Chenjie Zeng a, Fuyan Ma a
Affiliations
a, University of Florida, Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611
Abstract

Achieving atomic precision in semiconductor nanomaterials is important for reproducible synthesis, consistent properties, and enhanced performance in various applications. However, precision synthesis of nanomaterials is challenging because of their complex structures and entangled reactions. Here, I will introduce our recent progress toward precision synthesis and atomic engineering of semiconductor nanoclusters. By combining coordination, cluster, and colloidal chemistry, we “precisionalize” the colloidal cation exchange reaction. Atomically precise semiconductor clusters are obtained at near-unity yields by using atomically defined clusters as anion templates and metal-ligand complexes as cation carriers. X-ray crystallographic structures provide atomic-level insights into the transformation mechanisms, the core and surface structures, and the origins of chirality and polarity in semiconductor nanomaterials. Our results represent an important step in extending precision chemistry from the molecular scale to the nanoscale, providing a designable approach to accessing a library of atomically precise semiconductor nanoclusters with tailored cores and surfaces for their existing and emerging applications.

20:05 - 20:40
Nanoscience-I2
Brozek, Carl
University of Oregon
Surface Chemistry of Porous Nanomaterials
Brozek, Carl
University of Oregon, US
Authors
Carl Brozek a, Audrey Davenport a, Ashley Mapile a, Jiawei Huang a, Faiqa Khaliq a
Affiliations
a, University of Oregon, US
Abstract

Metal-organic frameworks (MOFs), zeolites, and other high-surface-area materials become even more useful when prepared as colloidal nanoparticles. They can be processed into coatings, membranes, and thin films via solution-state methods, such as spray coating or 3-D printing, at industrial scales. Nanosizing porous materials also improves their bioavailability for drug delivery, while enhancing the kinetics of gas sorption in carbon capture, water harvesting, and chemical separations technologies. Fundamentally, the presence of both external and internal surfaces challenges basic notions of interfacial science. I will describe advances from the Brozek lab towards the synthesis of monodisperse MOF nanocrystals and analytical techniques to understand their internal and external surface chemistry. Aided by sum-frequency generation spectroscopy,  electrochemical measurements, and synthetic molecular approaches, we observe unexpected size-dependent optical properties, redox processes driven by cooperative supramolecular interactions, and tunable phase change behavior.

20:40 - 21:15
Nanoscience-I3
Ackerson, Christopher
Colorado State University
Cloneable Inorganic Nanoparticles
Ackerson, Christopher
Colorado State University, US
Authors
Christopher Ackerson a, Kanda Borgognoni b, Bradley Guillimas a, Taylor Tomalinas a
Affiliations
a, Colorado State University, Colorado State University, Fort Collins, US
b, NIH, 13 South Drive, Building 13, Room G800, Bethesda, 20008, US
Abstract

A cloneable NanoParticle (cNP) is an inorganic nanoparticle that is synthesized by a protein. The protein determines the physicochemical properties of the particle, such as elemental composition, size, and morphology. Recent work on cloneable nanoparticles comprised of Se, ZnSe, and Bi will be presented, including the synthetic paradigm and the use of these cNPs in correlated light and electron microscopy.

21:15 - 23:00
Poster Social Hour
 
Wed Jul 09 2025
07:30 - 08:30
Breakfast
Nanostructured Oxides and Transition Metal-Containing Materials
Chair: Geoffrey Strouse
09:00 - 09:35
Materials-I1
Gamelin, Daniel
Ytterbium Doping to Create New Photonic Materials
Gamelin, Daniel
Authors
Daniel Gamelin a
Affiliations
a, University of Washington
Abstract

This talk will describe recent results in which ytterbium doping has been used to generate very unusual photonic properties in otherwise (reasonably) well-understood inorganic materials. One example involves Yb3+ doping of lead-halide perovskite (CsPbX3) semiconductors to form new materials that excel at “quantum cutting”. A second example involves Yb3+ doping of 2D van der Waals magnets to generate unique optical manifestations of magnetic exchange. Both new families of materials present fascinating electronic-structure challenges.

09:35 - 10:10
Materials-I2
De Jesús Báez, Luis R.
University at Buffalo
Into the toolbox: Alternative methods to refine materials properties
De Jesús Báez, Luis R.
University at Buffalo, US
Authors
Luis R. De Jesús Báez a
Affiliations
a, University at Buffalo, 130 Natural Science Complex, Buffalo, US
Abstract

The discovery and development of new materials tailored to a specific function remain as one of the grand challenges for materials’ scientists. To this end, layered materials have been extensively studied due to the sundry of properties that emerge from chemical and physical modifications. Unfortunately, little is still known of the fundamental requirements to generate pronounced and tailored alterations to the electronic structure upon dimensional reduction or functionalization of their active sites. Comprehensive nanoscale characterization is essential to understand how the loss of 3D structural coherence and further modifications of the surface, induced because of ion intercalation, exfoliation to 2D sheets, or functionalization of the basal planes, alter the electronic structure of these materials which translates into physical properties. In this talk, I will discuss the use of layered VS2 structures as seed to nucleate VOOH nanostars and the precise control of ligand modification on Fe-based layered double hydroxides as novel catalysts. With these modifications, we seek to understand changes in the capabilities of these materials to serve as pollution remediation catalysts, especially for emergent pollutants. 

10:10 - 10:30
Coffee Break
Nanostructured Oxides and Transition Metal-Containing Materials
Chair: Geoffrey Strouse
10:30 - 11:05
Materials-I1
De Roo, Jonathan
University of Basel
Lanthanide-doped core/shell oxide nanocrystals; from mechanistic insight to optical properties.
De Roo, Jonathan
University of Basel, CH
Authors
Jonathan De Roo a
Affiliations
a, University of Basel, Spitalstrasse, 51, Basel, CH
Abstract

While fluoride nanocrystals (e.g., NaYF4) are popular host materials for lanthanide-based up-and downconversion, ceramic oxide hosts (e.g., ZrO2 and HfO2) have found less widespread use, due to the synthetic challenge of producing colloidally stable oxide nanocrystals with a complex (e.g., core/shell) architecture. The oxides are however, more chemically and thermally stable.

We first present the results of our mechanistic investigation in the synthesis of zirconium and hafnium oxide from metal chloride and metal alkoxide in trioctylphosphine oxide (TOPO). We study the metal speciation in solution, we determined the decomposition kinetics and its mechanism and we study the nucleation and growth. We find evidence for an E1 elimination mechanism and the occurrence of amorphous particles as intermediate on route the final highly crystalline particles. This is a consequence of the rate imbalance between a fast precursor decomposition and a slow crystallization process.

Second, we demonstrate the epitaxial growth of hafnia shells onto zir-conia cores, and pure zirconia shells onto europium doped zirconia cores. The core/shell structures are fully crystalline. Upon shelling, the optical properties of the europium dopant are dramatically improved (featuring a more uniform coordination and a longer photoluminescence lifetime), indicating the suppression of non-radiative pathways.

Third, we dive deeper in lanthanide doped zirconia nanocrystals. We determine the incorporation efficiency of multiple lanthanide in zirconia. We show the influence of the surface chemistry on the emission spectrum and lifetimes of Eu3+ of Tb3+. Time resolved emission spectra allow us to differentiate different europium sites (surface and bulk).

These results launch the stable zirconium and hafnium oxide hosts as alternatives for the established NaYF4 systems.

11:05 - 11:40
Materials-I2
Milliron, Delia
The University of Texas at Austin
Layer-by-layer photonic metamaterials from colloidal metal oxide nanocrystals
Milliron, Delia
The University of Texas at Austin, US
Authors
Delia Milliron a, Woo Je Chang a, Zarko Sakotic a, Tanay Paul a, Daniel Wasserman a, Thomas M. Truskett a
Affiliations
a, University of Texas at Austin, 1912 Speedway, Stop D5000 Austin, Texas 78712, Austin, US
Abstract

Metal oxide nanocrystals doped with a few percent of aliovalent dopants become electronically conducting and support strong light-matter interactions in the infrared due to localized surface plasmon resonance (LSPR). At the same time, they remain wide bandgap semiconductors, so they are transparent to visible light, offering unique spectrally selective opportunities to control light. In nanocrystals of the prototypical material tin-doped indium oxide (ITO), for example, the strength and spectrum of light absorption are tunable across the mid- and near-infrared by varying the amount of tin incorporated during synthesis and the nanocrystal size and shape. These nanocrystals are ideal building blocks for optical metamaterials, where the spectra of the components and the nature of the coupling between them determine the effective optical response. We build photonic materials by assembling superlattices of ITO nanocrystals layer-by-layer and integrating them with thin films of metals and dielectric materials. The resulting cavity-coupled plasmonic metamaterials provide unparalleled control over infrared reflectance and absorption. For example, we show that photonically integrated single monolayers of ITO nanocrystals can act as spectrally tunable infrared perfect absorbers. Adding nanocrystal layers of variable composition expands the design space, with opportunities for multi-resonant structures and ultrathin optics.

11:40 - 12:00
Materials-T1
Shulenberger, Katherine
Brandeis University
Synthesis, Structure, and Assembly of Heavy-Metal Free Iron Sulfide Nanocrystals
Shulenberger, Katherine
Brandeis University, US
Authors
Katherine Shulenberger a, Stephanie M. Tenney a, Hyeseong Moon a, James Landeryou a
Affiliations
a, Brandeis University Department of Chemistry
Abstract

Semiconductor nanocrystals have proven to be a promising material platform for a range of optoelectronic applications including in photovoltaic devices and light emitting technologies. However, one major drawback of many of the best performing materials is the presence of toxic, heavy metals (e.g. cadmium or lead). We present the hot injection synthesis of iron sulfide nanocrystals, which are formed from earth-abundant, heavy-metal free sources. Through size control, we shift the band gap from the near-infrared bulk value (0.95 eV for pyrite) into the visible range (>1.7 eV). We investigate the synthetic control of these materials, their atomistic structure, and the self-assembly into nano to microscale structures. We further demonstrate the formation of a magic sized cluster which acts as an intermediate in the formation of larger nanocrystals (>10 nm). This material platform shows promise for control of confinement effects in iron sulfide nanocrystals and tuning of optical properties through interparticle interactions in mesoscale assemblies.

12:00 - 12:20
Materials-T2
Fenton, Julie
The Pennsylvania State University
Finding metastable crystal structures in difficult composition spaces on the nanoscale
Fenton, Julie
The Pennsylvania State University, US

Julie is a synthetic materials chemist. Her research is aimed at creative problem solving in materials chemistry, addressing significant bottlenecks in obtaining and understanding inorganic, organic, and hybrid solids. Julie grew up in Lancaster, Pennsylvania and earned a bachelor's degree in chemistry from Messiah College (Grantham, PA) in 2014. She earned her doctoral degree in chemistry from The Pennsylvania State University in 2018, where she worked with Raymond Schaak to develop new synthetic methods for inorganic nanomaterials. Prior to joining the faculty at Penn State, Julie was an Arnold O. Beckman Postdoctoral Fellow in the Chemical Sciences at Northwestern University, where she worked with William Dichtel on crystalline porous polymers and their applications. Outside of lab, Julie enjoys cross training, trivia, cooking, travel, and spending time with her family.

Authors
Julie Fenton a, Balu P. Ratheesh a, Rahul R. Manikkoth a, Danielle M. Landry a, Julie L. Fenton a
Affiliations
a, Pennsylvania State University
Abstract

Inorganic nanomaterials display unusual size-dependent properties that differ from the same material in bulk. Non-thermodynamic crystal structures inaccessible in bulk can be obtained as nanocrystals, aided by the energetic impact of the large surface area to volume ratio present in nanoscale solids. This presentation will highlight our group’s efforts to isolate unusual metastable crystal structures as colloidal nanocrystals, with work specifically targeting underexplored composition spaces in nanosynthesis. I will highlight the discovery of a series of rare-earth containing ternary metal chalcogenide nanocrystals that adopt a novel hexagonal crystal structure that does not have a bulk analog in the studied phase space.

12:20 - 13:30
Lunch
13:30 - 16:00
Free Time
16:00 - 18:00
Poster Session III
18:00 - 19:30
Dinner
Applications of Inorganic Nanomaterials
Chair: Brian Korgel
19:30 - 20:05
Nanomaterials-I1
Beard, Matthew C.
National Renewable Energy Laboratory, US
Chiral Induced Spin Selectivity in two dimensional Lead-Halide Hybrid Semiconductors
Beard, Matthew C.
National Renewable Energy Laboratory, US, US
Authors
Matthew C. Beard a, Yifan Dong a, Azim Haque a, Pius Theiler a, Jeiwan Tan a, Jacob Shelton a, Dali Sun b
Affiliations
a, National Renewable Energy Laboratory
b, NCSU
Abstract

Combining the remarkable semiconducting properties of metal halide semiconductors with  synthetically tunable chirality produces a new family of chiral semiconductors that offer the ability to control spin at room temperature through the chirality-induced spin selectivity (CISS) effect.  We have studied CISS in 2D chiral metal halide semiconductors (CMHS) where the chiral organic sub-component induces chirality into the two dimensional inorganic metal halide halides.  We developed spin-valves that exhibit a room-temperature CISS-induced magnetoresistance (CISS-MR) of >300%  and consists of a ferromagnet (FM), tunneling barrier, and CMHS. The large CISS-MR results from the formation of an interfacial spin-selective tunneling barrier due to CISS, which can produce spin-polarization and MR that surpass the limit generally assumed in the Jullière model. We also developed two non-contact ultrafast probe of CISS. One is through the inverse-CISS effect where by purely injected spin-current via ultrafast excitation of the FM induces a charge current in the CHMS.  The charge current is read out by THz emission spectroscopy, which we show is sensitive to the charge current polarity and direction. The second involves induces an ultrafast charge current in a chiral metal and measuring picosecond spin-polarization. We will discuss the implications of these measurements on the CISS mechanism. 

20:05 - 20:40
Nanomaterials-I2
Ginger, David
University of Washington, US
Ligands, Lineshapes, and LEDS: Interfacial Control of Perovskite Quantum Dot Emitters
Ginger, David
University of Washington, US, US
Authors
David Ginger a
Affiliations
a, University of Washington
Abstract
20:40 - 21:15
Nanomaterials-I3
Guyot-Sionnest, Philippe
University of Chicago
Functional mid-infrared inorganic nanomaterials, detectors and emitters
Guyot-Sionnest, Philippe
University of Chicago, US

Philippe Guyot-Sionnest is a professor of Physics and Chemistry at the University of Chicago since 1991.  His group developed original aspects of colloidal quantum dots and nanoparticles, including single dot PL microscopy, the luminescent core/shell CdSe/ZnS, intraband spectroscopy, charge transfer doping, electrochemical and conductivity studies, the "solid state ligand exchange", and mid-infrared quantum dots.   Other significant works are the development of surface infrared-visible sum-frequency generation, and interfacial time resolved vibrational spectroscopy of adsorbates.  

Authors
Philippe Guyot-Sionnest a
Affiliations
a, University of Chicago, 929 East 57th st, Chicago, 60637, US
Abstract

Since the end of the 1990s, the inorganic core of CQDs has been their key appeal as infrared solution processed optical materials. Striking milestones were PbS CQD short wave infrared imaging in 2008, background limited detection with HgTe CQDs in 2015, and thermal imaging a year later.  A growing number of companies around the world work on infrared imagers with simply spun-on CQD inks on CMOS chips.  
Work on CQD detectors is well advanced, and the goals are to reach relevant performances and extend the coverage to longer wavelengths.  In an exciting new development, biased CQDs can readily produce intraband cascade electroluminescence in the mid-infrared.  As a result, CQDs now provide both mid-infrared detectors and light sources. 
I will then discuss the central challenge of making brighter CQDs. Experiments point to energy transfer to yet uncontrolled/unspecified IR absorption that bypasses far-field emission.  This has a strong impact on detector sensitivity,  and HgTe CQDs for 5 microns, 8.5 microns, and 12 microns show the correlation of poorer sensitivity with weaker emission.   While we still struggle to find a materials solution,  nanoantenna and the Purcell effect already allow CQD mid-infrared detectors and emitters with impressive performance.     

21:15 - 23:00
Poster Social Hour
 
Thu Jul 10 2025
07:00 - 08:00
Breakfast and Depart
 
Posters
Taras Sekh, Taehee Kim, Sebastian Sabisch, Federica Bertolotti, Sergey Tsarev, Antonietta Guagliardi, Norberto Masciocchi, Rolf Erni, Gabriele Rainò, Maryna Bodnarchuk, Maksym Kovalenko
Ligand Engineering and Photophysics of Hybrid Organic-Inorganic Perovskite Nanoplatelets
Andrew Greytak, Nuwanthaka P. Jayaweera, Farjana Haque Mitu, Md. Moinu Islam, Gryphon A Drake, Jennii M. Burrell
Ligand exchange equilibrium at quantum dot surfaces in polar solvent environments
Miri Kazes, Hadar Nasi, Michal Leskes, Hagai Cohen, Ayelet Vilan, Linda JW Shimon, Ifat Kaplan-Ashiri, Michal Lahav, Dan Oron, Maria Chiara Gregorio
Photon Avalanched Broadband Emission in a Yb/Er-Trimesic Acid Metal Organic Framework
Ajmal Roshan Unniram Parambil
Atomically precise surface chemistry of zirconium and hafnium metal oxo clusters beyond carboxylate ligands
Apurba De, Sreeparna Banerjee, Benjamin p Hancock, Mitesh Amin, Farwa Awan, Todd D. Krauss
Ultrafast Polariton Dynamics in Strongly Coupled CdSe Nanoplatelets
Chris Lowe, Helen C. Larson, Yifeng Cai, Huat Thart Chiang, Lilo D Pozzo, François Baneyx, Brandi M. Cossairt
Leveraging the Coordination Chemistry of Chiral Thiols to Probe Chirality Transfer to Cadmium Chalcogenide Nanocrystals
Eunbyeol Gi, Karime Hernandez Perez, Jacob Olshansky
ZnSe quantum dots as photocatalysts for phenol coupling reactions
Glen Alliger, Lina Nazarova
An investigation of some common quantum dot starting materials
Grant Dixon, Xingyi Wang, Celine Liew, Dylan Ladd, Helen Larson, Kai Mei Fu, Daniel Gamelin, Mike Toney, Brandi Cossairt
Synthesis, Surface Chemistry, and Photoluminescence of InP Nanoclusters with Phosphonic Acid Ligands
Yi-Chun Liu
Direct Optical Lithography of Colloidal Nanoparticles for Photonic Integrated Circuits
Tanya Chen, Justin C. Ondry, Jun-Hyuk Chang, Richard D. Schaller, Dmitri V. Talapin
Colloidal In1−xGaxP Nanocrystals Synthesized in Molten Salts as Stable Blue Emitters
Gryphon Drake, Andrew Greytak
Metal Sulfide Nanocrystal Synthesis from Thiols and Yield Dependent Ligation
Jikson Pulparayil Mathew, Carlotta Seno, Mohit Jaiswal, Charlotte Simms, Nico Reichholf, Dietger Van den Eynden, Tatjana Parac-Vogt, Jonathan De Roo
The Central Role of Oxo Clusters in Zirconium-based Esterification Catalysis.
Kaelyn McFarlane-Connelly, Niamh Brown, Hua Zhu, Oliver Nix, Moungi Bawendi
Continuous Injection Synthesis of Large Perovskite Nanocrystals for Bright and Fast Emission at Low Temperature
Nico Reichholf, Carlotta Seno, David n Van der Hegge, Jordi Arbiol
Synthesis of Core-shell Nanocrystallites for Harnessing Grain Boundary Defects
Mawuli Degbevi, Wyatt L. Balliew, Kasuni U. Handunge, Allen G. Oliver, Emily Y. Tsui
Anion Basicity Tunes Thermodynamics of CdSe and CdS Quantum Dot Surfaces.
Md Moinul Islam, Gryphon A Drake, Andrew B Greytak
Probing the surface chemistry of CdSe magic-sized nanocrystals
Brandi Cossairt, Soren Sandeno, Hao Nguyen, Elise Skytte, Emma Coester
Precision Synthesis and Deterministic Placement of Quantum Dots for Quantum Light Technologies
Todd Krauss, Sanela Lampa-Pastirk, Farwa Awan, Emily Edwards, Jana Jelusic, Ryan M. Kosko, Soraya Ngarnim, Wesley Chiang, Kara Bren
A Nano-Biological Living System for the Production of Solar Fuels
Kwang Seob Jeong, Jinhyeok Lee, Si Yu Kim, Soeun Jeon, So Young Eom, Dongsun Choi
Selectable Electronic Transition of Silver Chalcogenide Colloidal Quantum Dot
Lauralee Hurst, Woo Je Chang, Delia Milliron
Assembling Dual-Mode Core-Shell Nanocrystals into a Tunable Infrared Plasmonic Metasurface
Yujin Park, Woo Je Chang,, Marina Wren Berry, Saghar Rezaie Kouhestani, Sadegh Yazdi, Delia Milliron
Emergence of collective plasmon resonance in hierarchically doped metal oxide nanocrystal assemblies
Jacob Olshansky, Autumn Lee, Frida Hernandez, Amisha Jain, Jens Niklas, Oleg Poluektov, Mandefro Teferi, Ming Lee Tang, Kefu Wang, Tiffany Tran, Tomoyasu Mani
Photogenerating polarized spin states in quantum dot – molecule conjugates
Jia-Ahn Pan, Dmitri Talapin, Emory Chan
Photosensitive Ligand Chemistries for Direct Patterning of Colloidal Nanocrystals
Kyle Schnitzenbaumer, Stephen Johnson
Materials Research Partnerships Leveraging Photothermal and Photoluminescence Characterization at a Primarily Undergraduate Institution
Belle Coffey, Eric Lin, Ash Sueh Hue, Tasnim Ahmed, Eugenia Vasileiadou, Elise Skytte, Ellen M. Sletten, Justin R. Caram
Realizing HgTe quantum dots with high quantum yields throughout the short-wave infrared
Benjamin Hancock, Sreeparna Banerjee, Mitesh Amin, Apurba De, Liam Burke, Jack Caruso, Farwa Awan, Todd Krauss
Exciton-Polaritons Generated from CdSe Nanoplatelet Heterostructures
Myoung Hwan Oh, Min Gee Cho
Synthesis of Core-shell Nanocrystallites for Harnessing Grain Boundary Defects
Danielle Landry, Julie Fenton
Thermal analysis of metastable nanocrystals
Min Gee Cho, Mary C. Scott, Myoung Hwan Oh, Katherine Sytwu, Luis Rangel DaCosta, Catherine Groschne
Machine learning-driven, size-resolved shape evolution in nanoparticle growth
Ayaskanta Sahu, Steven Farrell
Elucidating local structure of dopants in transition metal dichalcogenides for catalytic hydrogenolysis
Connor Orrison, Ian Schulze, Dong Hee Son
Determining the Efficiency of Generating the Upconverted Hot Electrons from Quantum Dots and Quantum Yield of Hot electron-enabled Reduction Reaction
Emil Hernandez-Pagan, Kayla Otero, Cameron Armstrong, Oscar J. Moreno-Piza, Emma Hollis, Luis R. De Jesús Báez, Adam Holewinski
Synthesis of Solid-Solution MnxZn1-xO Nanoparticles and their Electrochemical oxidation of Furfural
Erica Craddock, Kathryn Knowles
Local Coordination Geometry within Spinel Oxides Influences Optical Polaronic Properties
JI YANG, Phillippe Guyot Sionnest
Long-Wave Infrared HgTe Quantum Dot Photodectors
Jinlei Feng, Ji Yang, Philippe Guyot-Sionnest
Hg Chalcogenides for infrared detection. Shape control and Superlattices.
André Koch Liston, Yongseok Hong, Daniel Chica, Jack Tulyag, Jeongheon Choe, Fuyang Tay, Chun-Ying Huang, Victoria Quiros-Cordero, Xiaoyang Zhu, Milan Delor, Xavier Roy
Imaging Coherent Transport in Low-Dimensional Niobium-Based Semiconductors
Xinyi Wu, Danielle M. Cadena, Jussi Isokuortti, Conner J. O’Dea, Zachariah A Page, Sean T. Roberts
Engineering nanocrystal surfaces through ligand design and spatial organization to modulate charge carrier dynamics
Skylar Sherman, Matthew J. Coley-O’Rourke, Katherine E. Shulenberger, Lauren M. Pellows, Eran Rabani, Gordana Dukovic, Bokang Hou
Revealing the Phonon Bottleneck Limit in Negatively Charged CdS Quantum Dots
Eden Tzanetopoulos, Daniel Gamelin
Cr3+-Yb3+ Coupling in Fluoride and Oxide Nanostructures
Joel Shirey, Susan Kauzlarich
Impact of Brønsted Bases on Synthesis of Ge Nanocrystals in Oleylamine
Balu Ratheeesh, Julie Fenton
Exploring Complex Crystal Structures in Multi-Metal Chalcogenide Nanocrystals via Solution-Phase Colloidal Synthesis
Brian Korgel, Shea Sanvordenker
HgTe colloidal quantum dots
Fuyan M Ma, Sergei A. Ivanov, Lukasz Dobrzyck, Khalil A. Abboud, Chenjie Zeng
Transformative synthesis of II-VI and IV-VI semiconductor nanoclusters with atomic precision
Shraman Kumar Saha, Philippe Guyot-Sionnest
RoHS compliant colloidal quantum dots as soluble mid-infrared chromophores
Yiman Xu, Grant Dixon, Qing Xie, James F. Gilchrist, Brandi M. Cossairt, David S. Ginger, Elsa Reichmanis
Landau–Levich Scaling for Optimization of Quantum Dot Layer Morphology and Thickness in Quantum-Dot Light-Emitting Diodes
Lauren Cisneros, Matthew J. Crane
Ultrafast mapping of thermal and spin behavior of inorganic nanomaterial thin films
Korka Fall, Yiman Xu, Grant Dixon, Elsa Reichmanis, Brandi Cossairt
Tuning Quantum Dot Emission Characteristics via Conjugated Organic Ligand Engineering
Kelly Walsh, Rachel T. Smith, Daniel R. Gamelin
Anion Exchange and Lateral Heterostructure Formation in Ferromagnetic PEA2Cr(Cl,Br)4 Two-Dimensional Perovskites
Jennifer Schulz, L. Schindelhauer, C. Ruhmlieb, M. Wehrmeister, T. Tsangas, A. Mews
Controlled Growth of Two-Dimensional SnSe/SnS Core/Crown Heterostructures
Julia Voss, Christian Strelow, Tobias Kipp, Alf Mews
Spectroelectrochemical studies on CdSe/CdS dot-in-a-rod nanostructures
Samihat Rahman, Miguel Albaladejo-Siguan, Kelly M. Yokuda, Guillermo Lozano Onrubia, Gilbert C. Walker, Mark W.B. Wilson
Exploring carrier-based PbS quantum dot films to improve solid-state photon upconversion
Hannah Gorski, Chari Y. M. Peter, Chayan Carmenate Rodriguez, Elizabeth O. Phinney
Modulating Hole Transfer from CdSe Quantum Dots by Manipulating the Surface Ligand Density
Sharan Dhar, Caitlin My Hanh Le, Venkata Swaroopa Datta Devulapalli, Hao Li, Ayan Bhattacharyya, Pragalbh Sekhar, Ramanathan Vaidhyanathan, Eric Borgueta
Zirconium oxyhydroxide functionalized covalent organic framework for efficient disulfide bond formation
Hao Li, Sharan Dhar, Eric Borguet
Polaron resonance rather than plasmon resonance generates the near-infrared response of tungsten oxides
Jessica Geisenhoff, Eric G. Bowes Bowes, Vigneshwaran Chandrasekaran Chandrasekaran, Raymond T. Newell Newell, Han Htoon, Jennifer A. Hollingsworth
Colloidal Synthesis of Next-Generation Single-Photon Emitters at Telecom Wavelengths
Amy Prieto, Luke MacHale, Erin Snyder, Nathan Neisius, Richard Finke
Developing molecular handles for monitoring ternary nanoparticle synthesis
Alina Schimpf, Jessica Geisenhoff, Hang Yin, Natacha Oget
Using Ligands to Tune Precursor Reactivity and Surface Chemistry of Transition Metal Dichalcogenide Nanocrystals
Dulanjan Harankahage, Mikhail Zamkov, Divesh Nazar, Amelia Waters, Jiamin Huang, Siddartha Thennakoon
Colloidal Quantum Shells for Optoelectronic Applications
Mackenzie Rees Hughes, Minhal Hasham, Mark W.B. Wilson
Dynamic Trap Emission from Individual CdSe/ZnS Quantum Dots
Brodrick Sevart, Nikhila Balasubramaniam, Jeffrey Blackburn, Andrew Ferguson, Matthew Crane, Lance Wheeler
All-optical Halide Perovskite Artificial Neurons with Intrinsic Plasticity
William Zhang, Bereket Zekarias, Tai-De Li
Band Edge Manipulation of CdS Quantum Dots Mediated via Surface Chemistry for Photocatalytic Applications
Andrew Crowther, Natalie Saenz, Leslie S. Hamachi, Aisha Oza, Jonathan S. Owen
Raman Spectroscopic Probes of the Structure of Alloyed and Heterostructured Semiconductor Nanocrystals and Nanoplatelets
Sophia Click, Madison Jilek, Olivia Bird, Nathaniel Prugh, Faith Flinkingshelt, Yisrael Lamb, Jenny Yang, Kenneth Miller, Gordana Dukovic
Controlling Charge-Separated States in CdS Nanocrystals with a Covalently Bound Hole Acceptor
Olivia Bird, Helena Keller, Lauren Pellows, Gordana Dukovic, Paul King
Kinetic Modeling of Nanocrystal-Enzyme Complexes
Kate Plass
Why Does Selenium Anion Exchange Work? Examining the Transformation of Copper Sulfide Nanorods to Copper Selenide
Bereket Zekarias, Luis Pablo Arriaga Gonzalez, Jonathan Owen
Enhancing photoredox activity via ligand exchanges in Mn2+-CdS/ZnS QDs
Benjamin Hammel, Zirui Zhou, Justin Ondry, Dmitri Talapin, Sadegh Yazdi, Gordana Dukovic
Revealing the elemental distribution of In1-xGaxP1-yAsy nanocrystals
Gary Chen, Jonah J Ng, Yossef E Panfil, Cristian Gonzalez, Lucy Decker, Christopher B Murray, Lee C Bassett, Cherie R Kagan
Photophysical Enhancement of R-Cu Emission in ZnS:Cu Nanocrystals through ZnS Shell Overgrowth
Matthew Dake, Bryce Sadtler, Rohan Mishra, Jiang Luo
Origin of the Chiral Optical Properties in nanostructured π-SnS Films
Ruiming Lin, Dmitri V Talapin
Colloidal synthesis of metal nitride nanocrystals in molten inorganic salts
Geoffrey Strouse
n-type Cadmium Stannate Nanoparticles
Abeera Hassan, Na Jin, Ou Chen
Metal-Semiconductor Hybrid Nanocrystals for Photocatalytic Hydrogen Generation
Johnson Dalmieda, Daybis Tencio, Rhoma Khan, Augustin Braun, Daniella Pagliero, Abraham Wolcott, Sanjit Ghose, Carlos Meriles, David Walker, Jonathan Owen
High pressure synthesis of diamond nanocrystals
Katherine Shulenberger, Stephanie Tenney, Hyeseong Moon, James Landeryou
Synthesis, Structure, and Assembly of Heavy-Metal Free Iron Sulfide Nanocrystals
Julie Fenton
Finding metastable crystal structures in difficult composition spaces on the nanoscale
Matthew Crane, Sara Russo, Lauren Cisneros, Brandon Reynolds
Understanding and tuning hot carrier generation and transfer in plasmonic semiconductor nanomaterials
Tariq Hussein, Bruno Pinho, Sam Stranks, Laura Torrente
The Importance of Ligand Exchange in the Early Crystallisation Kinetics of Bright Colloidal Metal Halide (CsPbBr3) Quantum Dots
Kathryn Knowles, Revathy Rajan, Aida Gueye, Jordan Scalia, Luis R. De Jesús Báez
Interfacial Charge Transfer Processes Mediated by Transition Metals at the Surfaces of Nanocrystalline Ternary Spinel Oxides
Jonah Ng, Dylan M Ladd, Akhila Mallavarapu, Keith White, Gary Chen, Tony Tian, Shengsong Yang, Christopher B Murray, Michael F Toney, Cherie R Kagan
All-Inorganic, Bandgap Engineered Epitaxially-Fused PbSe Quantum Dot/CdS Matrix Heterostructures for Optoelectronic and Electronic Applications
Cristian Gonzalez, Yun Chang Choi, Gary Chen, Emanuele Marino, Cherie Kagan, Christopher Murray
Self-Assembled Hybrid Superparticle Lasers Enabled by Efficient Dot-to-Platelet Energy Transfer
Antony Peng, Daniel E DeRosha, Jessica Q Geisenhoff
A Redox Synthesis of Colloidal GaP Nanocrystals
Richard Robinson, Aleesha George, River B Carson, Daniel J. Gracias, Thomas J. Ugras, Andrew Musser
Magic size clusters for near-UV tunable polaritons
Joseph Luther, Md Azimul Haque, Young-Hoon Kim, Ruyi Song, Andrew Greider, Junxiang Zhang, Seth Marder, Volker Blum, Yuan Ping, Matthew Beard
Remote chirality transfer in low-dimensional hybrid metal halide semiconductors and quantum dots
Chayan Carmenate Rodriguez, Chari Y.M. Peter, Hannah N. Gorski, Elizabeth Phinney, Ellen M. Matson, Todd D. Krauss
Photophysics of hole transfer in stripped CdSe QDs
River Carson, Daniel J. Gracias, Thomas J Ugras, Reilly Lynch, Kenneth Burnette, James Fang, Tiberiu-Marius Gianga, Tamás Jávorfi, Richard Robinson
Enhancing chirality in assembled semiconductor nanocluster superstructures through ligand engineering
Chenqi Fan, Amanda Brewer, Chun-Chuan Huang, A. Paul Alivisatos
Surface Trap Engineering in CdSe Quantum Dots via Metal Halide Ligand Exchange
Binyu Wu, Shengsong Yang, A. Paul Alivisatos
Unravelling Kinetic-controlled Transformation in III-V Nanocrystals
Mark Wilson, Francisco Yarur Villanueva
A Stepwise Reaction Achieves Red-Emissive AZTS Nanocrystals
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