Journal article

Photophysics of Isolated Rose Bengal Anions

Mark H Stockett, Christina Kjaer, Steven Daly, Evan J Bieske, Jan RR Verlet, Steen Brondsted Nielsen, James N Bull

The Journal of Physical Chemistry A | AMER CHEMICAL SOC | Published : 2020

Abstract

Dye molecules based on the xanthene moiety are widely used as fluorescent probes in bioimaging and technological applications due to their large absorption cross-section for visible light and high fluorescence quantum yield. These applications require a clear understanding of the dye’s inherent photophysics and the effect of a condensed-phase environment. Here, the gas-phase photophysics of the rose bengal doubly deprotonated dianion [RB – 2H]2–, deprotonated monoanion [RB – H]−, and doubly deprotonated radical anion [RB – 2H]•– is investigated using photodetachment, photoelectron, and dispersed fluorescence action spectroscopies, and tandem ion mobility spectrometry (IMS) coupled with laser..

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University of Melbourne Researchers

Grants

Awarded by Swedish Foundation for International Cooperation in Research and Higher Education (STINT)


Awarded by Australian Research Council


Awarded by Independent Research Fund Denmark | Natural Sciences


Awarded by European Research Council


Funding Acknowledgements

Funding was provided by the Swedish Foundation for International Cooperation in Research and Higher Education (STINT, grant number PT2017-7328 to M.H.S. and J.N.B.), a start-up grant from the University of East Anglia (to J.N.B.), the Australian Research Council's Discovery Project funding scheme (DP150101427 and DP160100474 to E.J.B.), the Independent Research Fund Denmark | Natural Sciences (9040-00041B to S.B. N.), and the European Research Council's Starting Grant scheme (306536 to J.R.R.V.). Electronic structure calculations were carried out on the High Performance Computing Cluster supported by the Research and Specialist Computing Support Service at the University of East Anglia.