Studying the dynamics of photochemical reactions via ultrafast time-resolved infrared spectroscopy of the local solvent

Son C. Nguyen, Justin P. Lomont, Benjamin W. Caplins, Charles B. Harris

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Conventional ultrafast spectroscopic studies on the dynamics of chemical reactions in solution directly probe the solute undergoing the reaction. We provide an alternative method for probing reaction dynamics via monitoring of the surrounding solvent. When the reaction exchanges the energy (in form of heat) with the solvent, the absorption cross sections of the solvent's infrared bands are sensitive to the heat transfer, allowing spectral tracking of the reaction dynamics. This spectroscopic technique was demonstrated to be able to distinguish the differing photoisomerization dynamics of the trans and cis isomers of stilbene in acetonitrile solution. We highlight the potential of this spectroscopic approach for studying the dynamics of chemical reactions or other heat transfer processes when probing the solvent is more experimentally feasible than probing the solute directly. SECTION: Liquids; Chemical and Dynamical Processes in Solution

Original languageEnglish (US)
Pages (from-to)2974-2978
Number of pages5
JournalJournal of Physical Chemistry Letters
Volume5
Issue number17
DOIs
StatePublished - Sep 4 2014

Fingerprint Dive into the research topics of 'Studying the dynamics of photochemical reactions via ultrafast time-resolved infrared spectroscopy of the local solvent'. Together they form a unique fingerprint.

Cite this