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Platinum‐Based Poly(Aryleneethynylene) Polymers Containing Thiazolothiazole Group with High Hole Mobilities for Field‐Effect Transistor Applications
Author(s) -
Yan Lei,
Zhao Yan,
Wang Xiaohui,
Wang XingZhu,
Wong WaiYeung,
Liu Yunqi,
Wu Weiping,
Xiao Qingzhen,
Wang Guo,
Zhou Xuan,
Zeng Wei,
Li Chengxi,
Wang Xiaoyu,
Wu Hongbin
Publication year - 2012
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201200018
Subject(s) - electron mobility , materials science , polymer , platinum , charge carrier , absorption (acoustics) , polymer chemistry , side chain , optoelectronics , chemistry , organic chemistry , composite material , catalysis
Two solution‐processable platinum‐acetylide polymers functionalized with the electron‐deficient thiazolothiazole spacer are synthesized and show absorption features spanning from 320 to 600 nm and optical bandgaps of 2.15 and 2.05 eV. The spin‐coated polymer thin films of both materials exhibit p‐channel field‐effect charge transport characteristics with impressive peak field‐effect charge‐carrier mobilities of (2.1–2.8) × 10 −2 cm 2 V −1 s −1 and on/off ratios of (0.8–1.0) × 10 5 for the holes. The high hole mobility value reported for one of the polymers is among the highest reported for metallopolyynes to date. It is also shown that the hole mobility can be notably increased by extending the conjugation length of the chain from the monothienyl to the bithienyl segment on each side of the thiazolothiazole ring.