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 en
ISSN 1098-0121
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度
國別 USA
公開徵稿
出版型式 紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27797 )

機構典藏連結