Publication date: 22nd July 2026
Surface ligands play a central role in defining the structural, electronic, and optical properties of colloidal semiconductor nanocrystals. Beyond providing colloidal stability, appropriately designed ligands offer a route to introduce new functionality through controlled modification of nanocrystal surfaces. In particular, chiral ligands have emerged as a promising strategy to impart chiroptical activity to otherwise achiral semiconductor nanocrystals, enabling phenomena such as circular dichroism (CD) and circularly polarized luminescence (CPL), with potential applications in spin-optoelectronics, quantum photonics, and next-generation display technologies.
This presentation will discuss ongoing efforts to investigate ligand-mediated chirality in metal halide perovskite nanocrystals through the incorporation of chiral zwitterionic surface ligands. We examine how ligand binding, surface structure, and nanocrystal composition influence the emergence of chiroptical responses and discuss experimental approaches for probing these ligand-induced effects. Preliminary results illustrate both the opportunities and remaining challenges associated with engineering robust chiral interfaces while preserving the exceptional optical properties of halide perovskite nanocrystals. These studies highlight the importance of understanding surface chemistry as a pathway toward designing nanocrystal systems with tailored chiroptical functionality.
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