Emission modulation of fluorescent turn-on mode dibenzothienyl sulfonyl ethene photoswitches embedded in a polymer film

Andrea Albert; Martina Fried; Mukundan Thelakkat; Jürgen Köhler

doi:10.1039/D2CP05062E

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Emission modulation of fluorescent turn-on mode dibenzothienyl sulfonyl ethene photoswitches embedded in a polymer film†

Andrea Albert,^a Martina Fried,^b Mukundan Thelakkat

^bcd and Jürgen Köhler

*^acd

Author affiliations

* Corresponding authors

^a Spectroscopy of soft Matter, University of Bayreuth, Bayreuth, Germany
E-mail: juergen.koehler@uni-bayreuth.de

^b Applied Functional Materials, University of Bayreuth, Bayreuth, Germany

^c Bavarian Polymer Institute, University of Bayreuth, Bayreuth, Germany

^d Bayreuther Institut für Makromolekülforschung (BIMF), Bayreuth, Germany

Abstract

For decades photochromic molecules have attracted attention for their potential in using light as an external stimulus to change their photophysical properties. Here we report the spectroscopic characterization of two emissive photochromic molecules that are intrinsically fluorescent and that undergo a photocyclization/cycloreversion reaction upon illumination with light in the UV and VIS spectral ranges. For appropriately adjusted illumination intensities the emission can be modulated between the high- and the low-level with a contrast ratio exceeding 80%. The data are in reasonable agreement with the predictions from a simple kinetic model.

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Article information

DOI: https://doi.org/10.1039/D2CP05062E
Article type: Paper
Submitted: 28 Oct 2022
Accepted: 18 Nov 2022
First published: 18 Nov 2022

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Phys. Chem. Chem. Phys., 2022,24, 29791-29800

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Emission modulation of fluorescent turn-on mode dibenzothienyl sulfonyl ethene photoswitches embedded in a polymer film

A. Albert, M. Fried, M. Thelakkat and J. Köhler, Phys. Chem. Chem. Phys., 2022, 24, 29791 DOI: 10.1039/D2CP05062E

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Physical Chemistry Chemical Physics

Emission modulation of fluorescent turn-on mode dibenzothienyl sulfonyl ethene photoswitches embedded in a polymer film†

Abstract

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Emission modulation of fluorescent turn-on mode dibenzothienyl sulfonyl ethene photoswitches embedded in a polymer film

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