2010 Fiscal Year Final Research Report
Study of Cross-Coupling Reactions for Precisely Controlled Synthesis of π-Conjugated Polymers
| Project/Area Number |
20350049
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Synthetic chemistry
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| Research Institution | Kyoto University |
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Principal Investigator |
OZAWA Fumiyuki Kyoto University, 化学研究所, 教授 (40134837)
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| Co-Investigator(Kenkyū-buntansha) |
TAKITA Ryo 東京大学, 薬学系研究科, 助教 (50452321)
NAKAJIMA Yumiko 京都大学, 化学研究所, 助教 (80462711)
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| Project Period (FY) |
2008 – 2010
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| Keywords | π共役系高分子 / クロスカップリング型重縮合 / パラジウム触媒 / 触媒反応機構 / ホモカップリング機構 / PC還元的脱離機構 / 光異性化機構 / 光不溶化現象 |
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| Research Abstract |
All-cis poly (arylene vinylene) s (PAVs) with the vinylene linkages entirely controlled to cis geometry possess an excellent film-forming property, and undergo photo-induced insolubilization along with cis-to-trans isomerization in thin films, giving all-trans PAVs with good charge-carrier mobility up to 3.5×10^<-2> cm^2 V^<-1> s^<-1>. Highly selective ways of synthesizing all-cis and all-trans PAVs have been developed based on detailed mechanistic studies of elementary processes of palladium-catalyzed cross-coupling reactions. The primary structures of polymers that are required for the photo-induced insolubilization of PAVs have been elucidated by a quantitative method. A novel catalytic system that converts 2-bromo-3-alkylthiophenes to highly head-to-tail regioregular poly (3-alkylthiophene) s (HT-P3ATs) has been developed.
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