Spectroscopy, Dynamics, and Reactivity of Excess Electrons in Clusters

团簇中多余电子的光谱学、动力学和反应性

• 批准号: 0649647
• 负责人: Daniel Neumark
• 金额: $ 72.5万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-08-01 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0649647&HistoricalAwards=false
• 关键词: Spectroscopy; Dynamics; Reactivity; Excess; Electrons

In this award, funded by the Experimental Physical Chemistry Program of the Chemistry Division, Prof. Daniel M. Neumark of the University of California - Berkeley and his graduate student colleagues will carry out spectroscopic and dynamical studies of excess electrons in negatively charged clusters. These studies will be done using time-resolved photoelectron imaging (TRPEI), a femtosecond pump-probe technique. Experiments will be conducted with electron-doped, pure solvent clusters (water, methanol and acetonitrile), probing the electron relaxation dynamics, and in halide anion-doped solvent clusters, in which the dynamics of charge-transfer-to-solvent (CTTS) excitation is used to launch an electron into the solvent network, where its subsequent dynamics will be studied. Other studies will combine electron donor and electron acceptor in the same cluster, where CTTS followed by electron transfer to acceptor can be studied.The studies outlined will have a number of broader scientific impacts, since solvated electrons are ubiquitous in a number of scientific areas from atmospheric chemistry to biology and medicine. The graduate students trained in this program will acquire significant skills in experimental and theoretical chemical physics research.

在该奖项中，由化学部实验性化学计划资助，加利福尼亚大学的丹尼尔·诺伊姆克（Daniel M. 这些研究将使用时间分辨的光电成像（TRPEI）（一种飞秒泵探针技术）进行。 实验将使用电子掺杂的纯溶剂簇（水，甲醇和乙腈）进行，探测电子松弛动力学，以及在卤化物阴离子掺杂的溶剂簇中，在该簇中，电荷转移到溶剂到溶剂（ctts）的动力学动态用于溶解溶剂网络，并将其用于溶剂网络。 其他研究将将电子供体和电子受体结合在同一集群中，在该集群中，可以研究CTT，然后可以研究电子转移到受体。概述的研究将产生许多更广泛的科学影响，因为溶剂化的电子在许多科学区域中无处不在，从大气化学到生物学和医学。 接受该计划的培训的研究生将获得实验和理论化学物理学研究的重要技能。