教師資料查詢 | 類別: 期刊論文 | 教師: 楊淑君 SHU-CHUN YANG (瀏覽個人網頁)

標題:Illumination of exciton migration in rodlike luminescent conjugated polymers by single-molecule spectroscopy
學年91
學期1
出版(發表)日期2003/01/01
作品名稱Illumination of exciton migration in rodlike luminescent conjugated polymers by single-molecule spectroscopy
作品名稱(其他語言)
著者Wang, C. F.; White, J. D.; Lim, T. L.; Hsu, J. H.; Yang, S. C.; Fann, W. S.; Peng, K. Y.; Chen, S. A.
單位淡江大學物理學系
出版者College Park: American Physical Society
著錄名稱、卷期、頁數Physical Review B (Condensed Matter and Materials Physics) 67(3), 035202(8 pages)
摘要Single-molecule spectroscopy is used to study the time-dependent spectral behavior of a short rodlike Poly(phenylene vinylene) (PPV) derivative polymer spin cast in a polystyrene matrix. The fluorescent time trace is characterized by stepwise intensity emission with constant spectral composition, punctuated by abrupt intensity changes, which are usually accompanied by abrupt spectral changes. In contrast to coiled long chain polymers, defect-free rodlike polymers exhibit multiple-emission sites, each with its characteristic invariant spectrum. The distribution of spectral jumps in the emission spectrum reflects the distribution of the effective conjugation length. This implies the energy transfer (i.e., thermalized exciton migration) along the polymer backbone is inefficient. A static disorder induced conjugation length distribution model with limited energy transfer can be used in understanding the photophysics of an isolated polymer.
關鍵字poly(phenylene vinylene); polymer; unclassified drug; chemical structure;energy transfer; fluorescence; illumination; physics; spectroscopy; thermal analysis; time
語言英文
ISSN1098-0121
期刊性質國外
收錄於SCI
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
出版型式紙本
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