期刊
CHEMICAL PHYSICS LETTERS
卷 408, 期 1-3, 页码 162-168出版社
ELSEVIER
DOI: 10.1016/j.cplett.2005.04.020
关键词
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Vibrational energy relaxation and ultrafast thermalization following impulsive excitation of the OH-stretching band of water nanodroplets confined to reverse micelles is studied by infrared pump-probe spectroscopy with sub-100 fs time resolution. The self-consistent analysis of experimental data for micelles diameters ranging from 1 to 10 nm as well as for bulk water reveals distinctly different vibrational lifetimes for the water molecules in the bulk-like core (270 fs) and in the surfactant vicinity (800 fs), which is a direct proof of a strongly disturbed hydrogen-bond network. (c) 2005 Elsevier B.V. All rights reserved.
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