@article{745a6bcfb9984127ae475b28b0b2f2fa,
title = "In-Situ Spectro-Electrochemistry of Conductive Polymers Using Plasmonics to Reveal Doping Mechanisms",
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.",
keywords = "conductive polymers, doping mechanism, nanoparticle, plasmonics, redox, spectro-electrochemistry, surface-enhanced Raman scattering",
author = "Jialong Peng and Qianqi Lin and Tam{\'a}s F{\"o}ldes and Jeong, {Hyeon Ho} and Yuling Xiong and Charalampos Pitsalidis and Malliaras, {George G.} and Edina Rosta and Baumberg, {Jeremy J.}",
note = "Funding Information: We are grateful to B. de Nijs for support with fabrication, S. Hu for helping with SERS measurements, as well as the NanoPhotonics Centre and the Nanoscience Centre at the University of Cambridge for technical support. We acknowledge EPSRC grants (EP/N016920/1, EP/L027151/1, EP/T024550/1, EP/R013012/1, NanoDTC EP/L015978/1, EP/S022953/1), and ERC grants (project no. 883703 PICOFORCE, 861950 POSEIDON, and 757850 BioNet). J.P. acknowledges the support from the National Natural Science Foundation of China (62105369). H.-H.J. acknowledges support from NRF grant (NRF-2021R1C1C1005060), DGIST R&D Program (21-IJRP-01), GIST Research Institute grant in 2021. Publisher Copyright: {\textcopyright} 2022 American Chemical Society. All rights reserved.",
year = "2022",
month = dec,
day = "27",
doi = "10.1021/acsnano.2c09081",
language = "British English",
volume = "16",
pages = "21120--21128",
journal = "ACS Nano",
issn = "1936-0851",
publisher = "American Chemical Society",
number = "12",
}