1993 Fiscal Year Final Research Report Summary
A Novel Synthesis of Polymers with Dimensionally Extended pi-Conjugation by Solid-State Polymerization and Their Physical Properties
| Project/Area Number |
04453111
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
高分子合成
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| Research Institution | TOHOKU UNIVERSITY |
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Principal Investigator |
NAKANISHI Hachiro Tohoku University, Institute for Chemical Reaction Science, Professor, 反応化学研究所, 教授 (50240651)
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| Co-Investigator(Kenkyū-buntansha) |
OIKAWA Hidetoshi Tohoku University, Institute for Chemical Reaction Science, Associate Professor, 反応化学研究所, 助教授 (60134061)
ONO Katsumichi Ibaraki University, Faculty of Engineering・Professor, 工学部, 教授 (40006325)
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| Project Period (FY) |
1992 – 1993
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| Keywords | Conjugated Polymer / Solid-State Polymerization / Acetylene Derivates / Oligoyne Compound / Polydiacetylene / Non-Linear Optical Susceptibility |
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| Research Abstract |
Some tetrayne and hexayne derivates were synthesized and then polymerized in the solid-state by gamma-ray. The resulting pi-conjugated polymers looked like metal. The tetrayne compounds with urethane groups were the most polymerizable. The similar compounds having aryl groups gave large enough crystals for X-ray single crystal structure determination, resulting in the confirmation of the polymer structure, i.e. a polydiacetylene with directly bound diacetylenic moiety. However, it has become apparent that the reaction of diacethlenic moiety to ladder polymer does not proceed so easily. UV absorption peaks due to exciton were shifted bathochromically with extending pi-conjugation, and the degree of the shift was proportional to the number of acetylene group in the side chain. The value of chi^<(3)> was ca.10^<-9> esu, which was increased about one order of magnitude greater than ordinary polydiacetykenes.
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Research Products
(29 results)
