Intersystem-crossing and excited-state absorption of C70 studied by picosecond pump and probe absorption and fluorescence measurements

被引：7

作者：

Reindl, S ^{[1
]}

Penzkofer, A ^{[1
]}

Gratz, H ^{[1
]}

机构：

[1] Univ Regensburg, Inst Expt & Angew Phys 2, D-93040 Regensburg, Germany

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1998年 / 115卷 / 02期

关键词：

intersystem-crossing; excited-state absorption; C-70;

D O I：

10.1016/S1010-6030(98)00264-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The singlet and triplet absorption and emission dynamics of C-70 in toluene is studied with a picosecond Nd:glass laser double-pulse pump and probe transmission and fluorescence measurement technique. The singlet S-1 excited-state absorption (sigma(ex,L) approximate to 6 x 10(-17) cm(2)), the triplet T-1 absorption (sigma(T )approximate to 4.2 x 10(-17) cm(2)), and the triplet T-2 absorption (sigma(ex,T) approximate to 4.3 x 10(-17 )cm(2)) at 527 nm are determined. The singlet to triplet intersystem-crossing is studied by double pump pulse induced fluorescence signal analysis and by double probe pulse transmission measurements. The yield of triplet formation is found to be near to unity. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：89 / 97

页数：9

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