Precise design of heterojunction interface in liquid crystalline diblock copolymer film having semiconducting mesogen units
| Project/Area Number |
26620180
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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 |
Polymer/Textile materials
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| Research Institution | Kyoto Institute of Technology |
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Principal Investigator |
Asaoka Sadayuki 京都工芸繊維大学, 材料化学系, 准教授 (50336525)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 高分子機能材料 / ブロック共重合体 / 液晶 / 有機半導体 / 有機薄膜太陽電池 |
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| Outline of Final Research Achievements |
The amphiphilic liquid crystalline diblock copolymer composed of poly(ethylene oxide) and poly(methacrylate) having azobenzene-type liquid crystalline mesogen units in the side chain afford normally oriented cylindrical phase-segregated nanostructures in the thin film. In this study, a novel amphiphilic diblock copolymer having n-type semiconducting perylenediimide (PDI) in the side chain was synthesized. The diblock copolymer showed the isotropic transition at 170 ℃, which although much smaller than that of azobenzene-type block copolymer, implying the stacking interaction between the mesogens should be very weak. This copolymer did not show exceptional expansion of cylindrical phase like the azobenzene-type copolymer, to give bbc spherical nanostructure in the thin film according to the ordinary Flory-Huggins-type phase diagram. The stacking distance between the PDI units was calculated to be 0.67 nm, which allow the charge transportation by hopping between PDIs.
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Report
(3 results)
Research Products
(8 results)
