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Effects of Different Unsaturated‐Linker‐Containing Donors on Electronic Properties of Benzobisthiadiazole‐Based Copolymers
Author(s) -
Zhang Chen,
Chen Zhihui,
Yang Changan,
Liang Enxiang,
Yi Jianming,
Yu Gui,
Yang Chuluo
Publication year - 2018
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201700474
Subject(s) - copolymer , side chain , polymer chemistry , siloxane , linker , polymer , materials science , chemistry , organic chemistry , computer science , operating system
A series of new copolymers with unsaturated‐linker‐containing donors and benzobisthiadiazole acceptors are synthesized. Two kinds of side chains (2‐octyl‐1‐dodecyl chain and siloxane‐terminated hexyl chain) are added to the polymer backbone. The introduction of unsaturated‐linker‐containing donor enhances the rigidity of the copolymers. The strong electron‐withdrawing benzobisthiadiazole units make these copolymers display very narrow bandgaps in the range of 0.75–1.26 eV. Bottom‐gate and bottom‐contact transistors based on these polymers exhibit p‐type field‐effect behavior with hole mobilities up to 1.17 × 10 −3 cm 2 V −1 s −1 .