报告人：Wolfgang Jäger院士, Department of Chemistry, University of Alberta     

主持人：武愕 教授    

报告时间：2023年7月28日（周五）下午14:30    

报告地点：华东师范大学光学大楼B225会议室    

报告人简介：

Wolfgang Jäger received his PhD degree in Chemistry from the Christian Albrechts University in Kiel, Germany, in 1989. He joined the Department of Chemistry at the University of Alberta, Edmonton, Canada, in 1995 after spending time as postdoctoral fellow and research associate at the University of British Columbia, Vancouver, Canada. He was promoted to Associate Professor in 2001 and to the rank of Full Professor in 2003.

Professor Jäger’s research is multifaceted and includes fundamental studies of intermolecular interactions using spectroscopic investigations of weakly bound complexes and clusters, development of atmospheric trace gas sensing techniques that utilize solid state infrared diode lasers, photoreaction chamber studies of aerosol formation, and design and fabrication of external cavity lasers using MEMS technology. His work has resulted in more than 200 publications and numerous presentations at national and international meetings.

For his scientific achievements, Professor Jäger was awarded the NSERC Steacie Memorial Fellowship in 2002, in 2004 he became a Tier I Canada Research Chair in Cluster Science which was renewed in 2011, and in 2008 he was elected Fellow of the Royal Society of Canada. From 2009 to 2010, he spent a sabbatical year at the Fritz Haber Institute of the Max Planck Society in Berlin, Germany, which was funded by a prestigious Humboldt Fellowship.

报告摘要：

Rotational, microwave spectroscopy is, in combination with electronic structure calculations, a powerful method to characterize weakly bound complexes and clusters. Analyses of the measured spectra and interpretation of the resulting parameters make it possible to derive information about structures, relative energies, and inter- and intra-molecular dynamics.

In this presentation, I will discuss spectroscopic studies of several molecular systems which differ in their intermolecular interaction strengths. These examples range from rare gas clusters, which are held together by pure dispersion interactions, to hydrated aromatics, which contain strong hydrogen bonds.

The results of those cluster studies affect various aspects of physics and chemistry. For example, they are used as highly accurate benchmarks for the evaluation of electronic structure calculations, shed light on the transition between the microscopic, molecular regime and the bulk phase, and provide insights into aggregation, such as solvation or the formation of aerosol particles.