首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Optical absorption of isolated silver cluster-tryptophan: A joint experimental and theoretical study
Authors:T Tabarin  R Antoine  I Compagnon  M Broyer  P Dugourd  R Mitrić  J Petersen  V Bonačić-Koutecký
Institution:1. Laboratoire de Spectrométrie ionique et moléculaire, UMR 5579, Université Lyon I and CNRS, 43?Bd du 11?novembre 1918, 69622, Villeurbanne Cedex, France
2. Humboldt-Universit?t zu Berlin, Institut für Chemie, Brook-Taylor-Stra?e 2, 12489, Berlin, Germany
Abstract:We present a joint experimental and theoretical gas phase study of photoabsorption and photofragmentation of silver cluster-biomolecule complexes. We demonstrate on the example of Trp.Ag3] + that binding of the metal cluster to a biomolecule leads to a significant enhancement of the photoabsorption in comparison with Trp.H]+ and Trp.Ag]+. This enhancement arises due to the coupling between the excitations in the metallic subunit with charge transfer excitations between silver cluster and tryptophan. Our experimental studies show that silver clusters up to eleven atoms can be bound to tryptophan and we present first results on the photofragmentation of the Trp.Ag11 + complex cation, in which properties of cluster subunit remain preserved.
Keywords:31  15  Qg Molecular dynamics and other numerical methods  31  15  Ar Ab initio calculations
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号