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Nat Commun. 2019 Sep 5;10(1):3996. doi: 10.1038/s41467-019-11885-4.

An all-photonic full color RGB system based on molecular photoswitches.

Author information

1
Chemistry and Chemical Engineering, Chemistry and Biochemistry, Chalmers University of Technology, 41296, Göteborg, Sweden.
2
Department of Chemistry and Research Center for Smart Molecules, Rikkyo University Nishi-Ikebukuro 3-34-1, Toshima-ku, Tokyo, 171-8501, Japan.
3
Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL, 33146-0431, USA.
4
Departament de Química, Universitat Autònoma de Barcelona, 08193, Cerdanyola del Vallès, Spain.
5
Chemistry and Chemical Engineering, Chemistry and Biochemistry, Chalmers University of Technology, 41296, Göteborg, Sweden. a-son@chalmers.se.

Abstract

On-command changes in the emission color of functional materials is a sought-after property in many contexts. Of particular interest are systems using light as the external trigger to induce the color changes. Here we report on a tri-component cocktail consisting of a fluorescent donor molecule and two photochromic acceptor molecules encapsulated in polymer micelles and we show that the color of the emitted fluorescence can be continuously changed from blue-to-green and from blue-to-red upon selective light-induced isomerization of the photochromic acceptors to the fluorescent forms. Interestingly, isomerization of both acceptors to different degrees allows for the generation of all emission colors within the red-green-blue (RGB) color system. The function relies on orthogonally controlled FRET reactions between the blue emitting donor and the green and red emitting acceptors, respectively.

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