Issue 24, 2023

Side-chain engineering of self-doped conjugated polyelectrolytes for organic electrochemical transistors

Abstract

A series of conjugated polyelectrolytes (CPEs) containing cyclopentadithiophene-alt-benzothiadiazole were synthesized. Their alkyl chain length was varied from 2–5 carbons in order to investigate the effects on their optical, electrochemical and morphological properties. CPEs are mixed conductors and can be used as the active layer in accumulation mode organic electrochemical transistors (OECTs). Their transconductance, volumetric capacitance, and ionic and electronic conductivity are dependent on their alkyl chain length. DFT calculations help explain the differences in the ease of doping as a function of molecular structure.

Graphical abstract: Side-chain engineering of self-doped conjugated polyelectrolytes for organic electrochemical transistors

Supplementary files

Article information

Article type
Paper
Submitted
30 Jan 2023
Accepted
25 Mar 2023
First published
05 Apr 2023

J. Mater. Chem. C, 2023,11, 8274-8283

Author version available

Side-chain engineering of self-doped conjugated polyelectrolytes for organic electrochemical transistors

L. C. Llanes, A. T. Lill, Y. Wan, S. Chae, A. Yi, T. Nguyen-Dang, H. J. Kim, L. Sepunaru, J. Read de Alaniz, G. Lu, G. C. Bazan and T. Nguyen, J. Mater. Chem. C, 2023, 11, 8274 DOI: 10.1039/D3TC00355H

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