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ID 16628
本文ファイル
著者
NDC
物理学
抄録(英)
Fluorescence, fluorescence excitation, and absorption spectra have been measured for diphenylpolyenes with the polyene double bond number (n) from three to seven in solvents with different polarizabilities at room temperature. These polyenes exhibit anti-Kasha S2 (1 1Bu) fluorescence beside conventional S1 (2 1Ag) fluorescence in room temperature solution. It is shown that there are two different mechanisms for occurrence of the S2 (1 1Bu) fluorescence of diphenylpolyenes. S2 fluorescence occurs through the thermal population of the S1 state for the shorter diphenylpolyenes (n = 3 and 4), while it occurs as prompt S2 fluorescence due to inefficient S2-->S1 internal conversion for the longer diphenylpolyenes (n = 6 and 7). With diphenyldecapentaene (n = 5), S2 fluorescence based on both mechanisms is observed depending on the polarizability of the solvent used. The present results provide deeper insight into the mechanism for the occurrence of anti-Kasha S2 fluorescence of polyenes.
掲載誌名
Journal of Chemical Physics
121巻
14号
開始ページ
6956
終了ページ
6960
出版年月日
2004-10-08
出版者
American Institute of Physics
ISSN
0021-9606
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 2004 American Institute of Physics
関連情報URL
部局名
総合科学研究科