期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 1, 期 8, 页码 878-882出版社
AMER CHEMICAL SOC
DOI: 10.1021/sc4000576
关键词
Microwave heating; Direct arylation; Polycondensation; Conjugated polymer; Highly pure polymer
资金
- Collaborative Research Program of Institute for Chemical Research, Kyoto University
- Industrial Technology Research Grant Program from New Energy and Industrial Technology Development Organization (NEDO) of Japan
For synthesis of pi-conjugated polymers, polycondensation via direct arylation reactions of C-H bonds in aromatic monomers with dibromo-arylenes has attracted increasing attention as a simple synthetic method in which the preparation of organometallic reagents is unnecessary. To develop direct arylation polycondensation for practical use in the synthesis of optoelectronic polymer materials, microwave-assisted reactions were investigated and optimized in terms of a kind of base, concentration, reaction time, and amount of catalyst. Under the optimized conditions, the microwave-assisted direct arylation of 3,4-ethyleneidioxythiophene with dibromofluorene for 30 min with catalyst (1 mol %) gave the corresponding polymer with an extremely high molecular weight up to 147 000. The high molecular weight of the polymer enables formation of a large and flexible self-standing film, leading to an advantage in fabricating organic thin-film devices. The elemental analysis and MALDI-TOF-MS reveal that the polymer has high purity and no bromo- and metallo-terminals. Because only microwave-assisted direct arylation provided these features in the polymer, the present method is superior to conventional methods. Therefore, microwave-assisted polycondensation via direct arylation methodology lends itself well to practical application using inherent product from economical and environmental points of view for the synthesis of pure optoelectronic materials.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据