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Electronic states in 2-aminopurine revealed by ultrafast transient absorption and target analysis

被引：21
作者：
Larsen, OFA
van Stokkum, IHM
Groot, ML
Kennis, JTM
van Grondelle, R
van Amerongen, H
机构：
[1] Vrije Univ Amsterdam, Fac Sci, Div Phys & Astron, NL-1081 HV Amsterdam, Netherlands
[2] Dept Agrotechnol & Food Sci, Biophys Lab, NL-6703 HA Wageningen, Netherlands
来源：
CHEMICAL PHYSICS LETTERS | 2003年 / 371卷 / 1-2期
关键词：
D O I：
10.1016/S0009-2614(03)00212-4
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：
Subpicosecond polarized transient-absorption measurements on the fluorescent adenine analogue 2-aminopurine have been performed in the wavelength region from 320 to 690 nm. Global target analysis of the data reveals structural heterogeneity of the chromophore in the excited state. Two distinct states with remarkably different spectroscopic properties were resolved. One state does show stimulated emission, whereas the other state does not and exposes a very long excited-state lifetime. (C) 2003 Elsevier Science B.V. All rights reserved.
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收藏
页码：157 / 163
页数：7
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