Probing Dynamics in Higher-Lying Electronic States with Resonance-Enhanced Femtosecond Stimulated Raman Spectroscopy
Probing Dynamics in Higher-Lying Electronic States with Resonance-Enhanced Femtosecond Stimulated Raman Spectroscopy
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DOI：
10.1021/acs.jpca.8b07855
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发表时间：
2018-10-25
影响因子：
2.9
通讯作者：
Elles, Christopher G.
中科院分区：
文献类型：
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作者：
Quincy, Timothy J.;Barclay, Matthew S.;Elles, Christopher G.
飞秒受激拉曼散射（FSRS）测量通常探测处于第一电子激发态S-1的分子的结构动力学。虽然这些测量通常依赖于电子共振条件来增加信号强度或增强物种选择性，但共振条件的影响通常被忽略。然而，在FSRS光谱中的振动跃迁的模式特定的增强包含关于共振（上）电子态的详细信息。类似于基态共振拉曼光谱，拉曼谱带的相对强度揭示了由于S-n上的成键模式的变化而引起的上势能面的位移
Femtosecond stimulated Raman scattering (FSRS) measurements typically probe the structural dynamics of a molecule in the first electronically excited state, S-1. While these measurements often rely on an electronic resonance condition to increase signal strength or enhance species selectivity, the effects of the resonance condition are usually neglected. However, mode-specific enhancements of the vibrational transitions in an FSRS spectrum contain detailed information about the resonant (upper) electronic state. Analogous to ground-state resonance Raman spectroscopy, the relative intensities of the Raman bands reveal displacements of the upper potential energy surface due to changes in the bonding pattern upon S-n