English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 51258/86283 (59%)
造訪人次 : 8019547      線上人數 : 64
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27797

    題名: Illumination of exciton migration in rodlike luminescent conjugated polymers by single-molecule spectroscopy
    作者: Wang, C. F.;White, J. D.;Lim, T. L.;Hsu, J. H.;Yang, S. C.;Fann, W. S.;Peng, K. Y.;Chen, S. A.
    貢獻者: 淡江大學物理學系
    關鍵詞: poly(phenylene vinylene);polymer;unclassified drug;chemical structure;energy transfer;fluorescence;illumination;physics;spectroscopy;thermal analysis;time
    日期: 2003-01
    上傳時間: 2013-07-09 15:19:35 (UTC+8)
    出版者: College Park: American Physical Society
    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.
    關聯: Physical Review B (Condensed Matter and Materials Physics) 67(3), 035202(8 pages)
    DOI: 10.1103/PhysRevB.67.035202
    顯示於類別:[物理學系暨研究所] 期刊論文


    檔案 描述 大小格式瀏覽次數
    1098-0121_67(3)p035202(8pages).pdf521KbAdobe PDF90檢視/開啟



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋