Near-Infrared Reversible Photoswitching of an Isolated Azobenzene-Stilbene Dye
Carrascosa, Eduardo, Bull, James N., Buntine, Jack T., Da Silva, Gabriel, Santos, Paulo F. and Bieske, Evan J. (2020) Near-Infrared Reversible Photoswitching of an Isolated Azobenzene-Stilbene Dye. Chemical Physics Letters, 741. ISSN 0009-2614
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Abstract
Photoswitching of a charged azobenzene-stilbene dye is investigated through laser excitation in a tandem ion mobility mass spectrometer. Action spectra associated with E→Z and Z→E photoisomerisation of the stilbene group exhibit bands at 685 and 440 nm, corresponding to S1←S0 and S3←S0 transitions, respectively. The data suggest that isomers possessing a Z configuration of the azobenzene unit rapidly convert to E isomers and are not discernible using ion mobility spectrometry, and that photoisomerisation occurs through excited state dynamics rather than statistical isomerisation on the ground state potential energy surface.
Item Type: | Article |
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Uncontrolled Keywords: | action spectroscopy,ion mobility,molecules,photoisomerisation,photoswitch,stilbene |
Faculty \ School: | Faculty of Science > School of Chemistry |
Related URLs: | |
Depositing User: | LivePure Connector |
Date Deposited: | 08 Jan 2020 04:22 |
Last Modified: | 19 Jan 2021 00:53 |
URI: | https://ueaeprints.uea.ac.uk/id/eprint/73521 |
DOI: | 10.1016/j.cplett.2019.137065 |
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