Adenine, deoxyadenosine and deoxyadenosine 5′-monophosphate studied by femtosecond fluorescence upconversion spectroscopy

被引：119

作者：

Gustavsson, T ^{[1
]}

Sharonov, A ^{[1
]}

Onidas, D ^{[1
]}

Markovitsi, D ^{[1
]}

机构：

[1] CEA Saclay, DSM,DRECAM,SPAM, Lab Francis Perrin, CNRS,URA 2453, F-91191 Gif Sur Yvette, France

来源：

CHEMICAL PHYSICS LETTERS | 2002年 / 356卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(02)00290-7

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：

Aqueous solutions of adenine (A), deoxyadenosine (dA) and deoxyadenosine 5'-monophosphate (dAMP) were studied in room temperature by femtosecond fluorescence upconversion. The fluorescence decays cannot be described by single exponentials. They consist of an ultrafast component (230 fs for A, < 100 fs for dA and dAMP) and a slower one (8 ps for A, 0.5 ps for dA and dAMP). The slow component constitutes 95% of the total fluorescence (time-integrated) for the base while only 24% for the nucleoside or the nucleotide. The initial fluorescence anisotropy is 0.30 +/- 0.03 for A, 0.25 +/- 0.05 for dA and dAMP. The anisotropy of the A fluorescence partially decays during its lifetime due to rotational diffusion. (C) 2002 Published by Elsevier Science B.V.

引用

页码：49 / 54

页数：6

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