Publication date: 21st July 2025
Ever since its discovery by Myers and Nealson in 1988, Shewanella oneidensis MR-1 and other electroactive bacteria (EAB) have kept fascinating bioelectrochemists and others for the microbe’s ability to respond to oxidizing potentials delivered by polarized electrodes via extracellular transfer of charges. Realizing EAB’s potential for industrial applications, such as bioelectrosynthesis, wastewater treatment, bioremediation, etc., synthetic chemists, material scientists and electrical engineers joined the efforts to maximize the benefits of such bioelectochemical systems, particularly by improving the bioelectrical connection.
In the first part of the talk I will give my perspective on the various materials science approaches to improve extracellular electron transfer (EET), including works of direct involvement, based on the well-known conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT)1, chemically-functionalized CNTs2 and a ferrocene-based redox polymer3,4. To facilitate discussions on cross-material comparisons, I will mostly focus on one bioelectrochemical (or other) aspect at a time, such as electrochemically active surface area or microbe attachment to electrode, evaluated for multiple materials interfaces.
In the second part, I will introduce and outline future possibilities of EET signal transduction by organic electrochemical transistors (OECT) based on PEDOT:PSS, including the limited number of works published after we first introduced the organic microbial electrochemical transistor (OMECT) concept five years ago5.
For both topics, I will also show the first insights from our newest results using an n-type conducting polymer.
The speaker acknowledges a grant from the Swedish MSCA Seal of Excellence program (Vinnova, grant 2017−03121), Sweden-Japan 150 Anniversary Grants (The Swedish Foundation for International Cooperation in Research and Higher Education, STINT, grant SJ2017-7405), the MIRAI project (STINT, grant SG2016-6522), contribution from the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231and JSPS KAKENHI Grant Number JP23K13651. Furthermore, the speaker thanks Prof. Caroline Ajo-Franklin and Prof. Akihiro Okamoto for providing mutant strains, and Dr. Lin Su and Dr. Xizi Long for preparing bacteria for transfer.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.