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Title:ULTRAFAST TRANSIENT ABSORPTION SPECTROSCOPY OF PHOTOCHEMICAL DYNAMICS IN SOLUTION
Author(s):Orr-Ewing, Andrew
Contributor(s):Dale, Harvey J A; Venkatraman, Ravi Kumar; Koyama, Daisuke
Subject(s):Plenary
Abstract:The methods of ultrafast UV-visible and mid-IR transient absorption spectroscopy are powerful probes of dynamical processes occurring in solution [1]. They can be used to determine the rates and mechanisms of chemical and photochemical reactions, identify short-lived reactive intermediates, and examine how the dynamics are modified by solute-solvent interactions. The mechanistic insights which derive from the application of transient absorption spectroscopy will be illustrated by recent studies of solvent effects on electronically non-adiabatic pathways in photoexcited molecules, and direct observation of the intermediates involved in radical reactions controlled by the use of organic photoredox catalysts [2]. [1] Taking the plunge: chemical reaction dynamics in liquids, A.J. Orr-Ewing, Chem. Soc. Rev. 2017, 46, 7597-7614. DOI: 10.1039/C7CS00331E. [2] Ultrafast observation of a photoredox reaction mechanism: photo-initiation in organocatalyzed atom-transfer radial polymerization, D. Koyama, H.J.A. Dale and A.J. Orr-Ewing, J. Am. Chem. Soc. 2018, 140, 1285-1293. DOI: 10.1021/jacs.7b07829.
Issue Date:06/21/18
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:APS
Genre:Conference Paper / Presentation
Type:Text
Language:English
URI:http://hdl.handle.net/2142/100675
DOI:10.15278/isms.2018.RA02
Other Identifier(s):RA02
Date Available in IDEALS:2018-08-17
2018-12-12


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