Synthetic Strategy for Low-Band Gap Oligomers and Homopolymers Using Characteristics of Thiophene-Fused Boron Dipyrromethene

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• 作者：Ryousuke Yoshii ; Honami Yamane ; Kazuo Tanaka ; Yoshiki Chujo
• 刊名：Macromolecules
• 出版年：2014
• 出版时间：June 10, 2014
• 年：2014
• 卷：47
• 期：11
• 页码：3755-3760
• 全文大小：387K
• 年卷期：v.47,no.11(June 10, 2014)
• ISSN：1520-5835

文摘

In this article, we demonstrate the strategy for receiving low-band gap conjugated polymers based on thiophene-fused boron dipyrromethene (TB) with homopolymer structure. A series of TB-based polymers and oligomers with low band gaps were synthesized by oxidation coupling. The obtained polymers and their oligomers exhibited strong absorption in the range from visible to near-infrared region around 400鈥?000 nm (蔚 = 168鈥?00鈥?6鈥?00 M^鈥? cm^鈥?) originated from efficient expansion of main-chain conjugations. From the results of cyclic voltammetry, it was revealed that the TB derivatives have low-lying HOMOs and LUMOs. Furthermore, the TB derivatives showed high stability in atmosphere.