| Project/Area Number |
25410210
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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 |
Organic and hybrid materials
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| Research Institution | Saitama Institute of Technology (2014-2016)
Tokyo Institute of Technology (2013) |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 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 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 液晶 / 光応答挙動 / クマリン / 光 / 配向 / 色素 / 非線形 / 光配向 / オリゴチオフェン |
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| Outline of Final Research Achievements |
In this study, we investigated the photorespose behavior of the dye-dope liquid-crystalline (LC) system, and their possibility for photo-electronic devices. Photoinduced reorientation of dye-doped LCs has been evaluated most conveniently by self-diffraction ring measurements thanks to the extremely large self-phase modulation of the dye-doped LCs. In the coumarin 6-doped LC system, the number of diffraction rings were increased and maintained during photo irradiation. However, both devices doped with coumarin 545 and coumarin 545T, which are similar chemicals structures to the coumarin 6, that of diffraction rings were increased and then decreased during photo irradiation. We consider that the reproducible phenomena were not decomposition of the coumarin 545 and coumarin 545T, but the formation of the exciplex between the excited coumarins and host LCs. Thus, we may suggest a possibility for new photoresponse devices such as security system, with these phenomena.
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