| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
In this study, living polymerization based on palladium-catalyzed dehydrohalogenative coupling of heteroarenes with aryl halides (so-called direct arylation) as a new method to prepare pi-conjugated polymers with well-defined primary structures has been investigated. First of all, arylpalladium carboxylates as the models for catalytic intermediates were isolated. Its structures and reactivity toward direct arylation of heteroarenes were examined to show the structure of the active species and factors controlling the reactivity. Next, the catalyst prepared on the basis of the findings was applied to the polymerization of 2-bromo-3-hexylthiophene to exhibit behavior as living polymerization. Thus, the molecular weight of the resulting polymers increased in proportion to monomer conversion.
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