| 학회 |
한국화학공학회 |
| 학술대회 |
2002년 가을 (10/24 ~ 10/26, 서울대학교) |
| 권호 |
8권 2호, p.2393 |
| 발표분야 |
공업화학 |
| 제목 |
PVK 엑시머로부터 Polyfluorene으로의 에너지 전이 |
| 초록 |
A blend of a newly synthesized polyfluorene(PDHBF) and polyvinylcarbazole(PVK) exhibits a photoluminescence(PL) emission spectrum of PDHBF without an increase in the PL intensity on photoexcitation at 340 nm, the UV-visible absorption maximum of PVK, despite of a substantial spectrum overlap. However, the indirect photoexcitation of the blend suppresses the secondary emission of the PL with the maximum at 520 nm. The chromophores generating the secondary emission are formed when the chromophores are photoexcited above the critical energy level of an excited state. The chromophores formed by the energy transfer have energy lower than the critical energy and fail to form the excimers. A low temperature PL study of the blend in a cryogenic chamber proves that the energy transfer in the system takes place mainly between the excimers of PVK generated by the partially eclipsed dimeric states of two carbazole units and the fluorophores of PDHBF. |
| 저자 |
변호연, 정인재, 서영숙, 심홍구, 김동영, 김정엽
|
| 소속 |
한국과학기술원 생명화학공학과 |
| 키워드 |
polyfluorene; PVK; photoluminescence; energy transfer; fluorescence; conjugated polymer
|
| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
