| Project/Area Number |
09650970
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
高分子合成
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| Research Institution | YAMAGATA UNIVERSITY |
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Principal Investigator |
TAKEISHI Makoto Polymer Science & Engineering, Yamagata University, Professor, 工学部, 教授 (20007214)
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| Project Period (FY) |
1997 – 1999
|
| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1999: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1998: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1997: ¥1,600,000 (Direct Cost: ¥1,600,000)
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| Keywords | Polyamide / Helix / Phototransformation / Nonlinear optical material / ポリエステル / ポリケトン / らせん高分子 / 光学活性 |
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| Research Abstract |
Aromatic polyamides having new helical structures were synthesized by combination of optically active dissymmetric joints, such as biphenylene and binaphthlene, with aromatic hard segments, such as phenylene and 4,4'-azophenylene. CD spectra of the polymers obtained that the helical structures are stable up to 120℃ in a polar solvent, and the structures were maintained in strong acids such as methanesulfonic asid. A polyamide that contains azobezene moieties in the main chain was transformed on irradiation of UV light because of trans-cis photoisomerization of the photosensitive moieties. This polymer can be use as a nonlinear optical material. The preparative method was applied to preparation of similar polyesters, polyurethanes, and polyamines.
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