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Metal to insulator transition for conducting polymers in plasmonic nanogaps

Physics

Metal to insulator transition for conducting polymers in plasmonic nanogaps

Y. Xiong, R. Chikkaraddy, et al.

Discover how Yuling Xiong and colleagues exploit a plasmonic nanogap platform to explore the chemical structure and orientation of conjugated polymers like PEDOT. Their findings reveal how thickness variations influence optical and redox switching in nanothick devices through advanced techniques like dark-field imaging and surface-enhanced Raman scattering.

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Playback language: English
Abstract
Conjugated polymers are promising materials for various applications. This paper presents a plasmonic nanogap platform for assessing the chemical structure and orientation of conjugated polymers, focusing on PEDOT with varying thickness (2–20 nm) undergoing redox *in situ*. Dark-field (DF) and surface-enhanced Raman scattering (SERS) track optical anisotropy and chain orientation, demonstrating how this influences optical and redox switching in nanothick PEDOT devices.
Publisher
Light: Science & Applications
Published On
Jan 01, 2024
Authors
Yuling Xiong, Rohit Chikkaraddy, Charlie Readman, Shu Hu, Kunli Xiong, Jialong Peng, Qianqi Lin, Jeremy J. Baumberg
Tags
conjugated polymers
PEDOT
plasmonic nanogap
redox switching
optical anisotropy
nanothick devices

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