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Influence of Backbone Curvature on the Organic Electrochemical Transistor Performance of Glycolated Donor–Acceptor Conjugated Polymers
Author(s) -
Ding Bowen,
Kim Gunwoo,
Kim Youngseok,
Eisner Flurin D.,
GutiérrezFernández Edgar,
Martín Jaime,
Yoon MyungHan,
Heeney Martin
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202106084
Subject(s) - electrochemistry , transistor , acceptor , polymer , conjugated system , materials science , chemistry , transconductance , nanotechnology , chemical engineering , electrode , organic chemistry , physics , quantum mechanics , voltage , condensed matter physics , engineering
Two new glycolated semiconducting polymers PgBT(F)2gT and PgBT(F)2gTT of differing backbone curvatures were designed and synthesised for application as p‐type accumulation mode organic electrochemical transistor (OECT) materials. Both polymers demonstrated stable and reversible oxidation, accessible within the aqueous electrochemical window, to generate polaronic charge carriers. OECTs fabricated from PgBT(F)2gT featuring a curved backbone geometry attained a higher volumetric capacitance of 170 F cm −3 . However, PgBT(F)2gTT with a linear backbone displayed overall superior OECT performance with a normalised peak transconductance of 3.00×10 4 mS cm −1 , owing to its enhanced order, expediting the charge mobility to 0.931 cm 2 V −1 s −1 .