|Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2020: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2019: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2017: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
|Outline of Final Research Achievements
Polycondensation based on direct C-H/C-H cross coupling reaction between two kinds of aromatic monomers allows straightforward access to alternating π-conjugated polymers. While the synthetic protocol can get rid of prefunctionalization of starting monomers, it is necessary to control the selectivity of successive C-H metalation steps and suppress undesired homocoupling reactions. To conduct the polycondensation reaction efficiently, we focused on the Pd-catalyzed cross-dehydrogenative coupling reaction of polyfluoroarenes with thiophene derivatives. The reaction produced the corresponding donor-acceptor π-conjugated polymers with minor homocoupling defects. The reaction also proceeded using O2 as the terminal oxidant, resulting in lower loading of oxidant. Therefore, the synthetic methodology provides a promising tool for the synthesis of π-conjugated polymers with good atom and step economy.