Dynamic process in a hexameric benzo-porphyrin studied by femtosecond transient absorption

被引：15

作者：

Schweitzer, G

De Belder, G

Latterini, L

Karni, Y

Rowan, AE

Nolte, RJM

De Schryver, FC

机构：

[1] Katholieke Univ Leuven, B-3001 Heverlee, Belgium

[2] Univ Nijmegen, NSR Ctr, Dept Organ Chem, NL-6525 ED Nijmegen, Netherlands

来源：

CHEMICAL PHYSICS LETTERS | 1999年 / 303卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(99)00246-8

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 fast kinetics of a hexameric benzo-porphyrin compound was investigated by femtosecond transient absorption spectroscopy. Using polychromatic detection, a sequence of spectra acquired at different delays revealed complex kinetic processes on the timescale of approximately 20 ps. The samples were then investigated at selected wavelengths by using a dual-colour femtosecond pump-probe setup. The same sequence of measurements was carried out under identical conditions on a benzo-porphyrin model sample. The comparison of the transient absorption decays recorded for both compounds revealed that only in the hexamer a 20 ps decay component is present which is attributed to an intramolecular interchromophoric excited-state process. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：261 / 267

页数：7

共 16 条

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