The applicability of binary collision theories to complex molecules in simple liquids
The applicability of binary collision theories to complex molecules in simple liquids
复制标题
二元碰撞理论对简单液体中复杂分子的适用性
DOI：
10.1063/1.463987
复制
发表时间：
1992
影响因子：
4.4
通讯作者：
C. Harris
中科院分区：
文献类型：
--
作者：
K. E. Schultz;D. J. Russell;C. Harris
The relaxation dynamics of vibrationally excited ground‐state azulene molecules have been examined by picosecond transient absorption spectroscopy in a variety of different solvents including hexane, chloromethanes, methanol, CClF3, Xe, and Kr. A high pressure optical cell was used to liquify gases for use as solvents and to change their density and temperature independently over the entire liquid density range. Experimental results indicate that the vibrational cooling rate is strongly solvent dependent, with cooling rates of approximately 20 ps in molecular solvents and approximately 150 ps in atomic solvents. Comparison of the rates in Xe and Kr at constant number density demonstrates the strong effect of solvent mass on energy transfer. The effect of solvent temperature on vibrational cooling is minimal, as is the effect of solvent density. The latter result is quite surprising in light of earlier experiments on simpler molecular systems, such as I2 in Xe, and predictions of isolated binary collision ...
