Design and Synthesis of High-Performance Fluorine-Containing Liquid Crystals Based on the Structure-Activity Relationship
| Project/Area Number |
26410091
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Functional solid state chemistry
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| Research Institution | Kyoto Institute of Technology |
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Principal Investigator |
Konno Tsutomu 京都工芸繊維大学, 分子化学系, 教授 (70303930)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | テトラフルオロエチレン / 負の誘電率異方性 / ネガ型液晶分子 / 高位置選択的ヒドロシリル化 / テトラフルオロシクロヘキサン / テトラフルオロシクロヘキセン / 還元的脱フッ素化反応 / ジフルオロシクロヘキセン / ヒドロシリル化反応 / vic-ジフルオロシクロヘキサン / Diels-Alder反応 / フッ素化反応 / 2,3-ジフルオロ-2-シクロヘキセノール / 脱フッ素化反応 / 玉尾酸化 |
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| Outline of Final Research Achievements |
The high-performance liquid crystalline molecules bearing tetrafluorinated cyclohexane or cyclohexene with an alkoxy functionality were successfully synthesized through a cobalt(I)-catalyzed highly regioselective hydrosilylation reaction of tetrafluorocyclohexadienes as a key reaction. For the liquid crystalline molecule having a tetrafluorocyclohexene unit with an alkoxy group, it was proved that the planarity of the vinyl ether fragment and the bulkiness of a fluorine atom led to an increase of rotation barrier of an alkoxy group, resulting in the high-performance of the liquid crystalline molecule.
In addition, the synthesis of novel liquid crystalline molecules, difluorocyclohexenol derivatives, was successfully achieved via the reductive defluorination reaction of tetrafluorocyclohexanone derivatives.
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Report
(4 results)
Research Products
(10 results)
