Poly (oligothiophene-alt-benzothiadiazole) s: tuning the structures of oligothiophene units toward high-mobility “black” conjugated polymers
…, H Tian, D Song, Z Xie, D Yan, Y Geng, F Wang
Index: Yue, Wei; Zhao, Yun; Shao, Shuyan; Tian, Hongkun; Xie, Zhiyuan; Geng, Yanhou; Wang, Fosong Journal of Materials Chemistry, 2009 , vol. 19, # 15 p. 2199 - 2206
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Citation Number: 64
Abstract
A series of donor− acceptor low-bandgap conjugated polymers, ie, PT n BT (n= 2− 6), composed of alternating oligothiophene (OTh) and 2, 1, 3-benzothiadiazole (BT) units were synthesized by Stille cross-coupling polymerization. The number of thiophene rings in OTh units, that is n, was tuned from 2 to 6. All these polymers display two absorption bands in both solutions and films with absorption maxima depending on n. From solution to film, ...
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