HOCl 在超流氦纳米液滴中的红外光谱：探测溶剂的动力学响应。

Infrared spectroscopy of HOCl embedded in superfluid helium nanodroplets: probing the dynamical response of the solvent.

机构信息

Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.

出版信息

J Chem Phys. 2012 Jul 7;137(1):014302. doi: 10.1063/1.4731283.

Abstract

The rotationally resolved depletion spectrum of hypochlorous acid embedded in helium nanodroplets in the 2.8 μm region is reported. The narrow a-type lines are asymmetrically skewed in the direction of the band origin, and an analysis of their line shapes based on the chirped damped oscillator function introduced by van Staveren and Apkarian [J. Chem. Phys. 133, 054506 (2010).] yields a response time of the helium solvent of 1 ns. The b-type lines are much broader due to the greater number of droplet states available for relaxation of the excited rotational states.

摘要

本文报道了在 2.8 μm 区域嵌入氦纳米液滴中的次氯酸的旋转分辨耗尽光谱。窄的 a 型线在带原点的方向上呈不对称倾斜，对基于 van Staveren 和 Apkarian [J. Chem. Phys. 133, 054506 (2010).] 引入的啁啾阻尼振荡器函数对其线型进行的分析得出氦溶剂的响应时间为 1 ns。由于存在更多的液滴态可用于弛豫激发的转动态，因此 b 型线要宽得多。