Charge transfer to solvent dynamics in iodide aqueous solution studied at ionization threshold.
Charge transfer to solvent dynamics in iodide aqueous solution studied at ionization threshold.
复制标题
在电离阈值下研究碘化物水溶液中电荷转移到溶剂动力学。
DOI：
10.1039/c4cp02482f
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
E. F. Aziz
中科院分区：
文献类型：
--
作者：
A. Kothe;M. Wilke;A. Moguilevski;N. Engel;B. Winter;I. Kiyan;E. F. Aziz
本文研究了NaI水溶液在短紫外激光脉冲作用下的早期电子弛豫。而不是通过碘离子的共振光激发来引发电荷转移反应，在本时间分辨光电子能谱研究中，电荷转移到溶剂（CTTS）状态通过真空水平以上的电子激发来填充。通过分析两个瞬态物种的电离电子产额的时间演化，分配到CTTS和它的第一激发态，我们确定他们的超快布居和弛豫动力学。与共振激发研究的比较表明，高度激发的初始状态表现出类似的弛豫特性，发现共振激发。的结构和动态响应的水化笼的影响进行了讨论。
We explore the early-time electronic relaxation in NaI aqueous solution exposed to a short UV laser pulse. Rather than initiating the charge transfer reaction by resonant photoexcitation of iodide, in the present time-resolved photoelectron spectroscopy study the charge-transfer-to-solvent (CTTS) states are populated via electronic excitation above the vacuum level. By analyzing the temporal evolution of electron yields from ionization of two transient species, assigned to CTTS and its first excited state, we determine both their ultrafast population and relaxation dynamics. Comparison with resonant-excitation studies shows that the highly excited initial states exhibit similar relaxation characteristics as found for resonant excitation. Implications for structure and dynamical response of the hydration cage are discussed.
影响因子：
3.3
作者：
Buchner, Franziska;Schultz, Thomas;Luebcke, Andrea
通讯作者：
Luebcke, Andrea