Orientational and Vibrational Relaxation Dynamics of Peryene and 1-Methylperylene in Aldehydes and Ketones

S.N. Goldie; G.J. Blanchard

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Orientational and Vibrational Relaxation Dynamics of Peryene and 1-Methylperylene in Aldehydes and Ketones

机译：醛和酮中的y和1-甲基per的取向和振动弛豫动力学

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We report on the rotational diffusion and vibrational population relaxation dynamics of the probe molecules perylene and 1-methylperylene in selected aliphatic aldehyde and ketone solvents. The reorientation data demonstrate that, for both solvent systems, there is a change in the nature of the solvent-solute interactions with both probe molecules as the hydrodynamic volume of the solvent molecules approaches that of the probes. The solvent-dependent change in behavior occurs for different solvent aliphatic chain lengths in the two systems. Vibrational population relaxation measurements for two probe molecule vibrational modes reveal efficient intermolecular coupling in all cases. The data point to the role of the solvent aldehyde proton in mediating solvent-solvent and solvent-solute interactions, leading to chromophore dynamics reminiscent of those seen in the n-alcohols. Reorientation of the two probes in the ketones yields results that are more consistent with those seen in the alkanes, suggesting the relative weakness of dipole-induced dipole interactions relative to hydrogen-bonding interactions in the solvation of perylene and 1-methylperylene.

机译：我们报告了探针分子per和1-甲基per在选定的脂肪族醛和酮溶剂中的旋转扩散和振动种群弛豫动力学。重新定向数据表明，对于两种溶剂系统，随着溶剂分子的流体动力学体积接近探针的流体力学体积，与两种探针分子的溶剂-溶质相互作用的性质都会发生变化。对于两个系统中不同的溶剂脂族链长，会发生与溶剂有关的行为变化。在两种情况下，两种探针分子振动模式的振动种群弛豫测量显示出有效的分子间偶联。数据指出溶剂醛质子在介导溶剂-溶剂和溶剂-溶质相互作用中的作用，导致发色团动力学让人联想到正醇。两种探针在酮中的重新取向产生的结果与在烷烃中观察到的结果更加一致，表明在per和1-甲基per的溶剂化中偶极诱导的偶极相互作用相对于氢键相互作用相对较弱。

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《The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory》 |2001年第28期|共9页
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S.N. Goldie; G.J. Blanchard;
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中图分类物理化学（理论化学）、化学物理学;
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1. Orientational and Vibrational Relaxation Dynamics of Peryene and 1-Methylperylene in Aldehydes and Ketones [J] . S.N. Goldie, G.J. Blanchard The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory . 2001,第28期

机译：醛和酮中的y和1-甲基per的取向和振动弛豫动力学
2. Effect of Hydrogen Bonds on the Vibrational Relaxation and Orientational Relaxation Dynamics of HN3 and N-3(-) in Solutions [J] . Lee Chiho, Son Hyewon, Park Sungnam The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical . 2016,第36期

机译：氢键对溶液中HN3和N-3（-）的振动弛豫和取向弛豫动力学的影响
3. Dynamics of supercritical methanol of varying density from first principles simulations: Hydrogen bond fluctuations, vibrational spectral diffusion, and orientational relaxation [J] . Yadav V.K., Chandra A. The Journal of Chemical Physics . 2013,第22期

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4. Vibrational relaxation dynamics of OH stretch of water at air/H2O interface investigated by time-resolved heterodyne-detected vibrational sum-frequency generation spectroscopy [C] . Woongmo Sung, Ken-ichi Ionue, Satoshi Nihonyanagi 日本化学会春季年会講演予稿集 . 2018

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机译：电子瓶颈和相干振动对晶体中光激发离子弛豫动力学的影响

Orientational and Vibrational Relaxation Dynamics of Peryene and 1-Methylperylene in Aldehydes and Ketones

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