| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 봄 (04/10 ~ 04/11, 컨벤션 뷰로(대전)) |
| 권호 |
33권 1호 |
| 발표분야 |
유기반도체 재료 및 소자 |
| 제목 |
Fast Energy Migration on Oligosilylene-Linked Poly- and Oligothiophenes |
| 초록 |
The fluorescence properties of oligosilylene-linked poly- and oligothiophenes were investigated by using various spectroscopic methods. Si-linked terthiophenes showed excimer formation upon excitation. From the anisotropy decay, excitation energy migration among the oligothiophenes was confirmed. The excitation energy migration was discussed on the basis of the incoherent energy hopping mechanism. The effect of σ-π conjugation on the present energy transfer was indicated. For the block copolymers of oligothiophene and oligosilylene, the energy migration along the polymer chain was also revealed by the fluorescence anisotropy measurements. The time constant for the energy migration became faster as the size of the oligothiophene in the polymer repeating unit became shorter. From comparison with the Förster theory, the energy migration process was attributed to an incoherent hopping mechanism. |
| 저자 |
조대원1, Mamoru Fujitsuka2, Tetsuro Majima3, Joji Ohshita2, Atsutaka Kunai3
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| 소속 |
1조선대, 2Osaka Univ., 3ISIR |
| 키워드 |
Energy migration; oligothiophene; polythiophene; fluorescence up-conversion
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| E-Mail |
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