In-Situ Spectro-Electrochemistry of Conductive Polymers Using Plasmonics to Reveal Doping Mechanisms
Source abstract
Abstract
Conducting polymers are a key component for developing wearable organic electronics, but tracking their redox processes at the nanoscale to understand their doping mechanism remains challenging. Here we present an in-situ spectro-electrochemical technique to observe redox dynamics of conductive polymers in an extremely localized volume (<100 nm3). Plasmonic nanoparticles encapsulated by thin shells of different conductive polymers provide actively tuned scattering color through switching their refractive index. Surface-enhanced Raman scattering in combination with cyclic voltammetry enables detailed studies of the redox/doping process. Our data intriguingly show that the doping mechanism varies with polymer conductivity: a disproportionation mechanism dominates in more conductive polymers, while sequential electron transfer prevails in less conductive polymers.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Conducting polymers and applications · Electrochemical Analysis and Applications · Analytical Chemistry and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge CB30HE, U.K.
Department of Physics and Astronomy, University College London, London WC1E 6BT, U.K.
Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB30AS, U.K.
Electrical Engineering Division, Department of Engineering, University of Cambridge, Cambridge CB30FA, U.K.
Funding
Engineering and Physical Sciences Research Council · National Research Foundation of Korea · National Natural Science Foundation of China · H2020 European Research Council · DGIST Research and Development Program · GIST Research Institute
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