Vibrationally Driven and Controlled Bimolecular Reactions in Gases and Liquids

在这个由化学学部实验物理化学项目资助的项目中，Crim将继续并扩展他对振动激发在气体和液体化学反应中的作用的研究。目标是研究振动激发的分子在气体中的相同反应，在气体中，它们在单一的，孤立的接触中发生反应，在液体中，分子几乎连续地相互作用。先前关于气相模式和键选择反应的工作将扩展到包括新的振动激发分子和新的反应伙伴。液体实验从热反应开始，在热反应上加入振动激励以加速反应并改变反应过程。对于气体的选择振动激励将由纳秒级的激光脉冲来完成，而对于液体的研究将采用飞秒级的脉冲激励。这项研究将有助于对气体和液体中的化学反应过程有一个统一的基本认识。研究生和本科生以及博士后研究助理将参与这些研究。他们将获得技能和经验，为深造或进入科学/技术劳动力做好准备。

In this project, funded by the Experimental Physical Chemistry Program of the Chemistry Division, Crim will continue and extend his research on the role played by vibrational excitation on chemical reactions in both gases and liquids. The goal is to study the same reactions of vibrationally excited molecules in gases, where they react in single, isolated encounters, and in liquids, where molecules interact almost continuously. Previous work on mode- and bond-selected reactions in the gas phase will be expanded to include new vibrationally excited molecules and to new reaction partners. The experiments in liquids start with a thermal reaction to which is added a vibrational excitation to accelerate the reaction and alter its course. For gases the select vibrational excitation will be accomplished by laser pulses of nanosecond duration, while femtosecond pulse excitation will be employed for the liquid studies. This research will contribute to a unified fundamental understanding of chemical reaction processes in gases and liquids. Graduate and undergraduate students, as well as post-doctoral research associates will participate in these studies. They will acquire skills and experience that will prepare them for advanced studies or entry into the scientific/technological workforce.