Vibrational-exciton relaxation probed by three-pulse echoes in polypeptides

被引：35

作者：

Piryatinski, A

Chernyak, V

Mukamel, S

机构：

[1] Univ Rochester, Dept Chem, Rochester, NY 14627 USA

[2] Univ Rochester, Theory Ctr Opt Sci & Engn, Rochester, NY 14627 USA

来源：

CHEMICAL PHYSICS | 2001年 / 266卷 / 2-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0301-0104(01)00231-2

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：

Infrared photon echoes are simulated for an anharmonic vibrational dimer representing a dipeptide in the amide I spectral region by solving the nonlinear exciton equations for the vibrational-exciton model. New relaxation-induced resonances are predicted. Variations of the cross-peak intensities during the middle time interval show signatures of exciton population transfer and coherence dynamics. Enhanced resolution is achieved using phase sensitive detection. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

收藏

页码：285 / 294

页数：10

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