Journal
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume 53, Issue 11, Pages 1396-1402Publisher
WILEY-BLACKWELL
DOI: 10.1002/pola.27611
Keywords
conjugated polymers; crystalline polymer; direct arylation; donor-acceptor polymer; polycondensation; structure-property relations
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Funding
- Industrial Technology Research Grant Program from New Energy and Industrial Technology Development Organization (NEDO) of Japan
- JGC-S SCHOLARSHIP FOUNDATION
- [25810070]
- [25620094]
- [25288052]
- Grants-in-Aid for Scientific Research [25620094, 25810070] Funding Source: KAKEN
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Palladium-catalyzed direct arylation polycondensation afforded a bithiazole-based homopolymer and donor-acceptor (D-A)-type copolymers where the bithiazole unit served as an acceptor unit. The results of polymerization strongly depended on the solubility of the polymers; long alkyl chain substituents were required for the formation of high-molecular-weight polymers in high yields owing to low solubility of the bithiazole-based polymers. X-ray diffraction studies revealed that the obtained polymers were highly crystalline. In particular, a well-ordered lamellar structure was observed in the D-A-type copolymer with flexible alkyl chains after thermal annealing, presumably owing to the combination of interchain interactions between the bithiazole units and the electrostatic D-A interactions. (c) 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 1396-1402
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