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Novel Thiophene‐Thiazolothiazole Copolymers for Organic Field‐Effect Transistors
Author(s) -
Osaka I.,
Sauvé G.,
Zhang R.,
Kowalewski T.,
McCullough R. D.
Publication year - 2007
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200701058
Subject(s) - materials science , polythiophene , thiophene , polymer , moiety , copolymer , annealing (glass) , doping , field effect transistor , band gap , electron mobility , chemical engineering , polymer chemistry , conductive polymer , transistor , nanotechnology , optoelectronics , organic chemistry , composite material , chemistry , physics , quantum mechanics , voltage , engineering
A semiconducting polymer bearing the thiazolothiazole moiety in the polythiophene backbone (see figure) is synthesized. The polymer is found to have small bandgap and large ionization potential. Despite the low molecular weight, the polymer exhibited a high field‐effect mobility after annealing. A high on/off ratio suggests the polymer possesses high stability against oxygen doping. The polymer device also showed good environmental stability.