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.
Highlights
On-command changes in the emission color of functional materials is a sought-after property in many contexts
The major downside with all the above mentioned efforts is that they require physical access to the sample
At least partly, photonically driven systems have been devised to display a large range of attainable changes in the emission color[27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49], often by the inclusion of photochromic molecules
Summary
On-command changes in the emission color of functional materials is a sought-after property in many contexts. 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. Isomerization of both acceptors to different degrees allows for the generation of all emission colors within the redgreen-blue (RGB) color system. Selective isomerization of the two photoswitches results in blue-to-green and blue-to-red emission color changes in a colorcorrelated[3] fashion, whereas isomerization of both photoswitches allows for the generation of all emission colors within the redgreen-blue (RGB) color system
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