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

该奖项由化学学部实验物理化学项目资助，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分离动力学，以及(3)分子簇阴离子的溶剂激活和溶剂控制反应性。这些研究将在该小组的负离子束源的无碰撞条件下的气相中进行，并结合脉冲激光激发和光电子成像。光电子成像为精细研究化学反应提供了一种强大的新工具。此外，光电子图像可以用于量子图像，这为化学键的基本细节提供了深入的见解。在本科和研究生教学中，这些图像本身被用来说明化学键的量子方面。除了在萨诺夫实验室开创的成像技术的更广泛的科学和教育影响外，萨诺夫将继续培养在化学和物理交叉领域工作的新一代科学家。

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.