Triplet-triplet absorption of some organic molecules determined by picosecond laser excitation and time-delayed picosecond light continuum probing

被引：22

作者：

Gratz, H ^{[1
]}

Penzkofer, A ^{[1
]}

机构：

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

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1999年 / 127卷 / 1-3期

关键词：

triplet-triplet absorption; picosecond laser excitation; eosin Y; erythrosin B; rose bengal; fullerene molecule C(70);

D O I：

10.1016/S1010-6030(99)00152-5

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 triplet-triplet absorption cross-section spectra of eosin Y, erythrosin B, rose bengal and C(70) are determined in the wavelength range from 390 to 1600 nm. The T(1) triplet state is populated by S(1)-->T(1) intersystem crossing after singlet state excitation with intense picosecond pump pulses (wavelength 527 nm, duration 6 ps). The triplet-triplet absorption is probed with picosecond spectral light continua passing the samples after excited singlet state relaxation (time delay 20 ns), Absolute triplet-triplet absorption cross-sections are obtained by numerical simulation of the absorption dynamics. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：21 / 30

页数：10

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