Combined Infrared and EPR Studies of Photochemically Generated Free Radicals in Low-Temperature Solids

在这个由国际项目部和化学部实验物理化学项目联合资助的项目中，犹他大学的查尔斯·鬼魂教授将与俄罗斯切尔诺戈洛夫卡化学物理研究所的E·Y·米索奇科合作。在这个项目中，傅里叶变换红外(FTIR)和电子顺磁共振(EPR)光谱将被用来研究F和H原子与简单分子在低温基质中的光化学反应。调查人员的专业知识是互补的，鬼魂负责FTIR实验，米索奇科负责EPR。通过这种合作，这些研究人员将能够对热原子的迁移率、热原子的扩散以及在低温固体的限制性环境中发生的原子-分子反应进行全面的描述。在非常低的温度下，薄层的固体“贵重气体”基质是含有高活性或瞬时化学物种的理想载体，因此可以用一种称为基质隔离光谱的技术来研究它们。使用这项技术，可以解开和研究发生许多化学变化的机制。这类反应的例子有聚合、爆炸分解和燃烧。通过这种国际合作，一名俄罗斯和一名美国研究人员的互补资源将结合在一起，比任何一位科学家单独工作可能获得的这些类型的过程更完整。

In this project jointly funded by the Division of International Programs and the Experimental Physical Chemistry Program of the Chemistry Division, Professor Charles Wight of the University of Utah will collaborate with E. Y. Misochko of the Institute of Chemical Physics in Chernogolovka, Russia. In this program Fourier Transform infrared (FTIR) and electron paramagnetic resonance (EPR) spectroscopies will be used to study photochemical reactions of F and H atoms with simple molecules in low-temperature matrices. The expertise of the investigators is complementary, with Wight responsible for the FTIR experiments and Misochko for the EPR. Through this collaboration these researchers will be able to formulate a comprehensive description of hot atom mobility, diffusion of thermalized atoms, and atom-molecule reactions that occur in the restrictive environment of low-temperature solids. Thin layers of solid `noble gas` matrices at very low-temperatures are an ideal vehicle for containing highly reactive or transient chemical species so that they can be studied using a technique called matrix isolation spectroscopy. Using this technique the mechanisms by which a number of chemical transformations occur can be unravelled and examined. Examples of such reactions are polymerization, explosive decomposition, and combustion. Through this international collaboration, the complementary resources of a Russian and an American investigator will be combined to produce a more complete picture of these types of processes than might be obtained by either scientist working alone.