標題: Transition-State Spectroscopy Using Ultrashort Laser Pulses
作者: Kobayashi, Takayoshi
Yabushita, Atsushi
電子物理學系
Department of Electrophysics
關鍵字: lasers;reaction dynamics;transition states;ultrafast spectroscopy
公開日期: 1-四月-2011
摘要: To gain a complete understanding of a chemical reaction, it is necessary to determine the structural changes that occur to the reacting molecules during the reaction. Chemists have long dreamed of being able to determine the molecular structure changes that occur during a chemical reaction, including the structures of transition states (TSs). The use of ultrafast spectroscopy to gain a detailed knowledge of chemical reactions (including their TSs) promises to be a revolutionary way to increase reaction efficiencies and enhance the reaction products, which is difficult to do using conventional methods that are based on trial and error. To confirm the molecular structures of TSs predicted by theoretical analysis, chemists have long desired to directly observe the TSs of chemical reactions. Direct observations have been realized by ultrafast spectroscopy using ultrashort laser pulses. Our group has been able to stably generate visible to near-infrared sub-5-fs laser pulses using a noncollinear optical parametric amplifier (NOPA). We used these sub-5-fs pulses to study reaction processes (including their TSs) by detecting structural changes. We determine reaction mechanisms by observing the TSs in a chemical reaction and by performing density-functional theory calculations. DOI 10.1002/tcr.201000018
URI: http://dx.doi.org/10.1002/tcr.201000018
http://hdl.handle.net/11536/9054
ISSN: 1527-8999
DOI: 10.1002/tcr.201000018
期刊: CHEMICAL RECORD
Volume: 11
Issue: 2
起始頁: 99
結束頁: 116
顯示於類別:期刊論文


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  1. 000289639300003.pdf