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.

在该奖项中，由化学系实验物理化学项目资助，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。萨诺夫小组将具体研究（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脱离动力学，以及（3）溶剂驱动和分子簇阴离子中溶剂控制的反应性。这些研究将在该小组负离子束源的无碰撞条件下，结合脉冲激光激发和光电子成像，在气相中进行。光电子成像提供了一种强大的新工具，可用于详细研究化学反应。此外，光电子图像可用作量子照片，从而深入了解化学键合的基本细节。这些图像本身用于说明本科生和研究生教学中化学键合的量子方面。除了萨诺夫实验室开创的成像技术产生更广泛的科学和教育影响外，萨诺夫还将继续培训在化学和物理交叉领域工作的新一代科学家。