Solvation beyond the linear response regime

被引：43

作者：

Bredenbeck, J ^{[1
]}

Helbing, J ^{[1
]}

Hamm, P ^{[1
]}

机构：

[1] Univ Zurich, Inst Phys Chem, CH-8057 Zurich, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.95.083201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Transient two-dimensional infrared spectroscopy (2D-IR) on a charge transfer model system is used as a nonlinear probe of solvation dynamics. Unlike what is expected in the linear response case, nonequilibrium relaxation and equilibrium spectral diffusion occur on different time scales. Transient 2D-IR spectroscopy is shown to be sensitive to higher order frequency fluctuation correlation functions, and provides evidence for a coupling between commonly observed fast and slow solvation processes.

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