Near-infrared reversible photoswitching of an isolated azobenzene-stilbene dye

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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
Uncontrolled Keywords:	action spectroscopy,ion mobility,molecules,photoisomerisation,photoswitch,stilbene,physics and astronomy(all),physical and theoretical chemistry ,/dk/atira/pure/subjectarea/asjc/3100
Faculty \ School:	Faculty of Science > School of Chemistry (former - to 2024)
UEA Research Groups:	Faculty of Science > Research Groups > Chemistry of Light and Energy Faculty of Science > Research Groups > Centre for Photonics and Quantum Science
Related URLs:	http://www.scopus.com/inward/record.url?... https://linkinghub.elsevier.com/retrieve...
Depositing User:	LivePure Connector
Date Deposited:	08 Jan 2020 04:22
Last Modified:	10 Apr 2025 00:31
URI:	https://ueaeprints.uea.ac.uk/id/eprint/73521
DOI:	10.1016/j.cplett.2019.137065

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