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Thiazoloisoindigo: A Building Block that Merges the Merits of Thienoisoindigo and Diazaisoindigo for Conjugated Polymers
Author(s) -
Li Chenchen,
Un HioIeng,
Peng Jiawei,
Cai Mian,
Wang Xiao,
Wang Jieyu,
Lan Zhenggang,
Pei Jian,
Wan Xiaobo
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201801432
Subject(s) - ambipolar diffusion , conjugated system , polymer , materials science , optoelectronics , transistor , electron mobility , absorption (acoustics) , absorption spectroscopy , electron , infrared , combinatorial chemistry , photochemistry , chemical physics , chemistry , optics , physics , quantum mechanics , voltage , composite material
Thiazoloisoindigo, a novel structural variation of isoindigo, is for the first time utilized to synthesize conjugated polymers. The polymer based on thiazoloisoindigo merges the advantages of the one based on thienoisoindigo and diazaisoindigo; it not only exhibits a greatly redshifted UV/Vis absorption to the near‐infrared region owing to its strong tendency to form quinoidal structures, similar to that based on thienoisoindigo, but also shows excellent ambipolar mobility (hole: 3.93, electron: 1.07 cm 2 V −1 s −1 ) in organic field‐effect transistors (OFETs), superior to that based on diazaisoindigo, showing the strong electron‐withdrawing capability of thiazoloisoindigo.