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Structure and dynamics of molecular and cluster anions via photoelectron imaging and photofragment spectroscopy

通过光电子成像和光碎片光谱研究分子和团簇阴离子的结构和动力学

基本信息

批准号：
0713880
负责人：
Andrei Sanov
金额：
$ 40.5万
依托单位：
University of Arizona
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：
2007-09-01 至 2010-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0713880&HistoricalAwards=false
关键词：
Structure dynamics molecular cluster anions

项目摘要

In this award, funded by the Experimental Physical Chemistry Program of the Chemistry Division, Prof. Andrei Sanov from the University of Arizona and his post-doctoral and graduate student colleagues will investigate the electronic processes governing chemical reactions through photoelectron imaging and photofragment spectroscopy. The Sanov group will specifically investigate (1) the time-resolved dynamics and interference effects in bond-dissociation reactions of molecular and cluster anions, (2) the structure and photodetachment dynamics of molecular and cluster anions and (3) the solvent-enabled and solvent-controlled reactivity in molecular cluster anions. These studies will be carried out in the gas phase in the collision-free conditions of the group's negative-ion beam source, coupled with pulsed laser excitation and photoelectron imaging. Photoelectron imaging provides a powerful new tool with which to study chemical reactions in exquisite detail. In addition, the photoelectron images can be used a quantum photographs which provide deep insights into the fundamental details of chemical bonding. The images themselves are used to illustrate quantum aspects of chemical bonding in undergraduate and graduate teaching. Besides the broader scientific and educational impacts of the imaging techniques being pioneered in Sanov's laboratory, Sanov will continue to train a new generation of scientists working at the intersection of chemistry and physics.

在这个由化学系实验物理化学计划资助的奖项中，来自亚利桑那大学的Andrei Sanov教授及其博士后和研究生同事将通过光电子成像和光碎片光谱研究控制化学反应的电子过程。 Sanov小组将专门研究（1）分子和簇阴离子键解离反应中的时间分辨动力学和干扰效应，（2）分子和簇阴离子的结构和光剥离动力学以及（3）分子簇阴离子中的溶剂激活和溶剂控制反应性。这些研究将在气相中在该组负离子束源的无碰撞条件下进行，再加上脉冲激光激发和光电子成像。光电子成像提供了一个强大的新工具，用它来研究化学反应的精细细节。此外，光电子图像可以用作量子照片，为深入了解化学键的基本细节提供了深刻的见解。这些图像本身被用来说明本科和研究生教学中化学键的量子方面。除了在Sanov实验室开创的成像技术的更广泛的科学和教育影响外，Sanov将继续培养在化学和物理交叉领域工作的新一代科学家。