| Budget Amount *help |
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Outline of Final Research Achievements |
The trivalent phosphorus atoms bearing bulky aryl groups have high p-character arising from the structural change around the phosphorus and sterically protected environment. In this project, diaryphosphine moieties bearing bulky aryl groups are employed as key structures for the phosphorus analogs of polyaniline to improve instability of the phosphine moieties and lack of the effective π-conjugation due to low p-character of the phosphorus atom, and synthetic studies on the substructures and polymers were carried out.
Diarylphosphines substituted by 2,6-disubstituted aryl group and various 4-bromoaryl groups were synthesized by the nucleophilic substitution of the corresponding dichlorophosphine followed by the reduction. 4-Bromophenylphosphines bearing bulky alkyl or aryl groups at 2,6-positions were synthesized by the reduction of the corresponding dichlorophosphines or diethyl phosphonates prepared from bromoiodobenzene derivatives, and reactivities were studied.
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