Solvent-dependent intra- and intermolecular vibrational energy transfer of W(CO)6 probed with sub-picosecond time-resolved infrared spectroscopy
Solvent-dependent intra- and intermolecular vibrational energy transfer of W(CO)6 probed with sub-picosecond time-resolved infrared spectroscopy
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DOI：
10.1016/j.cplett.2005.07.051
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发表时间：
2005-09-05
影响因子：
2.8
通讯作者：
Hamaguchi, H
中科院分区：
文献类型：
--
作者：
Banno, M;Sato, S;Hamaguchi, H
使用单色亚皮秒时间分辨红外光谱在九种烷烃 (CnH2n+2, n = 5-13) 中观察到来自 W(CO)(6) 三重简并 CO 拉伸模式的溶剂依赖性分子内和分子间振动能量转移。在所有溶剂中，振动弛豫过程可以通过三个时间常数来很好地表征：tau(1) (< 1 PS)、tau(2) (3-13 ps) 和 tau(3) (124-160 ps)。 tau(2) 和 tau(3) 的溶剂依赖性不能用溶剂的宏观性质来解释。特别是，在九种烷烃中，癸烷的最长时间常数 tau(3) 显示最小值 124 ps。振动能量弛豫速率是微观环境的敏感量度。 (c) 2005 Elsevier B.V. 保留所有权利。
Solvent-dependent intra- and intermolecular vibrational energy transfer from the triply degenerate CO stretch mode Of W(CO)(6) is observed in nine alkanes (CnH2n+2, n = 5-13) with single-color sub-picosecond time-resolved infrared spectroscopy. In all the solvents, the vibrational relaxation process is well characterized by three time constants: tau(1) (< 1 PS), tau(2) (3-13 ps) and tau(3) (124-160 ps). The solvent dependence of tau(2) and tau(3) cannot be explained by the macroscopic properties of the solvent. In particular, the longest time constant tau(3) shows the minimum value of 124 ps in decane among the nine alkanes. The rate of the vibrational energy relaxation is a sensitive measure of the microscopic environments. (c) 2005 Elsevier B.V. All rights reserved.