1994 Fiscal Year Final Research Report Summary
The Study on energy transfer and multi-photon absorption of organic and inorganic hybrid materials
| Project/Area Number |
05452109
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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 |
Applied optics/Quantum optical engineering
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| Research Institution | TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY |
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Principal Investigator |
MIYATA Seizo Tokyo University of Agriculture and Technology Faculty of Technology, Professor, 工学部, 教授 (90015066)
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| Co-Investigator(Kenkyū-buntansha) |
WATANABE Toshiyuki Tokyo University of Agriculture and Technology Faculty of Technology, Research A, 工学部, 助手 (10210923)
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| Project Period (FY) |
1993 – 1994
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| Keywords | Fullerene / C60 / Multi-photon absorption / Energy transfer / Optical-limiting / DFWM / Polyarylamine / Polyethersulfone |
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| Research Abstract |
In this research project we study the energy transfer process between the organic and inorganic materials and multi-photon absorption of organometallic compounds. Fluorescence properties of organometallic Langmuir-Blodgett films were investigated using lanthanide ion. LB films of terbium (III) with 2- (4'-dodecylbenzoyl) benzoate and palmitate mixture were prepared on a quartz substrate. The molar fluorescence intensity of Tb (III) LB film was compared with the solutions. Fluorescence increases by 1^4 times by incorporating Tb (III) into sodium 2- (4'dodecylbenzoyl) benzoate in the solution and 10 times by preparing LB films. Fluorescence anisotropy of LB films indicated that the molecules oriented in a certain direction on the substrate.
Furthermore the electroluminescence (EL) properties of organometallic compounds were investigated. The thin films of organometallic compounds were prepared on a ITO glass plate. In general those organometallic compounds can not exhibit a highly efficient EL intensity. In order to overcome this problems the novel radiative EL device was developed to excite the organometallic compounds using a needle type electrode. The sample excited radiative DC voltage exhibit a efficient EL light up to 500 Cd/m2. This novel techniques can be applied to any luminescent materials.
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