讲座题目：Probing the Ultrafast Trap-State Dynamics in Nanomaterial Systems by Femtosecond Transient Absorption Spectroscopy
主讲人：张群教授
主持人：陈缙泉研究员
讲座时间：2016年11月18日9:30
讲座地点：理科大楼A814室
报告人简介：
Qun Zhang received his PhD in chemical physics from University of Science & Technology of China (USTC) in 1999. After seven years of postdoctoral training at Weizmann Institute of Science, Israel and University of British Columbia, Canada, he joined USTC as an associate professor & Hefei National Laboratory for Physical Sciences at the Microscale (HFNL) as an adjunct PI in 2007. He is now a full professor of chemical physics at USTC/HFNL. In the field of chemical physics with a focus on light–matter interactions, he has authored 90+ research papers in peer-reviewed journals, including Nature Commun.(1), PRL(1), JACS(4), Angew. Chem. Int. Ed.(7), Adv. Mater.(5), and Chem. Soc. Rev.(1). Prof. Zhang’s current research interest is devoted to understanding the microscopic mechanisms underlying the photoinduced physical/chemical processes and effects in a variety of condensed-phase molecular/nano/plasmonic systems by means of ultrafast optical spectroscopy.
报告摘要
Over the past decade the integration of ultrafast optical spectroscopy with nanoscience has greatly propelled the development of nanoscience, as the key information gleaned from the mechanistic studies with the assistance of ultrafast optical spectroscopy enables a deeper understanding of the structure–function interplay and various interactions involved in the nanomaterial systems. In this talk I will present an overview of the recent advances achieved in our ultrafast spectroscopy laboratory at USTC that address the ultrafast dynamics and related mechanisms in several representative nanomaterial systems by means of femtosecond time-resolved transient absorption spectroscopy. I will attempt to convey instructive, consistent information regarding the important processes, pathways, dynamics, and interactions (with a focus on the “dark” trap states) involved in the nanomaterial systems, most of which exhibit excellent performance in photocatalysis.