Ultrafast excited state dynamics in protonated GWG and GYG tripeptides

被引：16
|
作者：
Gregoire, G. [1 ]
Dedonder-Lardeux, C.
Jouvet, C.
Desfrancois, C.
Fayeton, J. A.
机构：
[1] Univ Paris 13, Lab Phys Lasers, UMR CNRS 7538, Inst Galilee, F-93430 Villetaneuse, France
[2] Univ Paris 11, Lab Photophys Mol, CNRS, F-91405 Orsay, France
[3] Univ Paris 11, Lab Collis Atom & Mol, CNRS, F-91405 Orsay, France
[4] Univ Paris 11, France Lab ELYSE, F-91405 Orsay, France
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2007年 / 9卷 / 01期
关键词：
D O I：
10.1039/b613585d
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 excited state dynamics of two protonated tripepticles GWG and GYG has been investigated by pump/probe ferntosecond measurements on photofragments, to explore the behavior of pepticles where the terminal protonated amino group is not directly linked to the aromatic residue. The dynamics observed are short and surprisingly similar to the dynamics observed on the free protonated tryptophan and tyrosine aromatic amino acids. Specific photoftagments observed for protonated GWG are related to the formation of a radical species WG degrees(+) after cleavage of the C-alpha-N bond near the tryptophan residue.
引用
收藏
页码：78 / 82
页数：5
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