Observation of Nuclear Wavepacket Motion of Reacting Excited States in Solution
Observation of Nuclear Wavepacket Motion of Reacting Excited States in Solution
复制标题
DOI：
10.1002/jccs.200600020
复制
发表时间：
2006-02
影响因子：
1.8
通讯作者：
T. Tahara;S. Takeuchi;Kunihiko Ishii
中科院分区：
文献类型：
--
作者：
T. Tahara;S. Takeuchi;Kunihiko Ishii
采用时间分辨率高达30−的双色泵浦探针光谱研究了溶液中顺式二苯乙烯的光异构化、二苯基环丙烯的光解离和10-羟基苯并喹啉分子内激发态质子转移三个基本的超快光化学反应；70 fs。观察了发生超快反应的激发态的相干核波包运动，并讨论了它们与反应的相关性。根据初始核波包运动与反应坐标的关系，将这些反应分为三种不同的类型。
Three fundamental ultrafast photochemical reactions in solution, i.e., photoisomerization of cis-stilbene, photodissociation of diphenylcyclopropenone and excited-state intramolecular proton transfer of 10-hydroxybenzoquinoline, were studied by two color pump-probe spectroscopy with time-resolution as high as 30 −; 70 fs. The coherent nuclear wavepacket motions of the excited-states that undergo ultrafast reactions were observed, and their relevance to the reaction was discussed. It was concluded that these reactions are classified to three different types for the relation between the initial nuclear wavepacket motion and the reaction coordinate.