EL devices using efficient energy transfer from polydiphenylsilane derivative to organic dyes
| Project/Area Number |
12650302
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Saitama University |
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Principal Investigator |
TERAMURA Daiyo Engineerig, Saitama University Professor, 工学部, 教授 (10008857)
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| Co-Investigator(Kenkyū-buntansha) |
KAMATA Norihiko Engineering, Saitama University Associate Professor, 工学部, 助教授 (50211173)
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| Project Period (FY) |
2000 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 2001: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
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| Keywords | polysilane / Soluble polydiphenylsilane / spin-coated film / energy transfer / EL devices / white luminescence / 発光 / ポリシラン合成 / 発光素子 |
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| Research Abstract |
Polysilanes are high polymers with Si main chain whose σ-orbitals are conjugated to each other to form such one-dimensional electronic states. It is known that polydiphenylsilane(PDPS) has a peculiar characteristics, such as UV absorption and photo luminescence(PL) in a near violet region (around 400 nm), due to the effective σ-σ conjugation and σ-π conjugation. However, it is also known that PDPS is insoluble in any solvent at all.
We have, successfully, prepared soluble poly(m-hexoxyphenyl)-phenylsilane(PmHPPS) keeping the basic characters of PDPS. Both PL and electro luminescence(EL) were observed around 400 nm in a spin-coarted film prepared from a solution of PmHPPS in CHCl_3.
Then, we prepared EL devices by using the spin-coated films prepared from a solution of PmHPPS with a small amount of organic dyes such as perylene, coumarin-6, and 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran(DCM). We found an efficient intermolecular energy transfer from PmHPPS to the individual organic molecule. Finally, we succeeded to prepare a EL device which has white luminescence from a apin-coated film of PnHPPS with a mixture of small amount of perylene, coumarin-6, and DCM.
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Report
(3 results)
Research Products
(15 results)
