| Project/Area Number |
16K13976
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Functional solid state chemistry
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| Research Institution | Yokohama National University |
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Principal Investigator |
Ubukata Takashi 横浜国立大学, 大学院工学研究院, 准教授 (00344028)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | フォトクロミズム / 電子環状反応 / 軸不斉 / 光物性 / キラリティ / コレステリック液晶 |
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| Outline of Final Research Achievements |
We have designed and synthesized a series of novel chiral photoswitch having a hexatriene structure in which an ethenyl group is introduced into the axially asymmetric binaphthyl skeleton. These compounds showed thermally reversible photochromism between hexatriene and cyclohexadiene. The original helix of the hexatriene structure was maintained in the process of ring-closing reaction by ultraviolet light and subsequent ring-opening reaction by heat, while helix-inverted hexatriene was generated at a certain ratio in ring-opening reaction by visible light. Different chiral selectivity was admitted between the photoreaction and thermal reaction.
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