Emission color tuning and white-light generation based on photochromic control of energy transfer reactions in polymer micelles
Bälter, Magnus (Chalmers University of Technology. Chemistry and Chemical Engineering)
Li, Shiming (Chalmers University of Technology. Chemistry and Chemical Engineering)
Morimoto, Masakazu (Rikkyu University. Research Center for Smart Molecules)
Tang, Sicheng (University of Miami. Laboratory for Molecular Photonics)
Hernando Campos, Jordi (Universitat Autònoma de Barcelona. Departament de Química)
Guirado López, Gonzalo (Universitat Autònoma de Barcelona. Departament de Química)
Irie, Masahiro (Rikkyu University. Research Center for Smart Molecules)
Raymo, Françisco M. (University of Miami. Laboratory for Molecular Photonics)
Andréasson, Joakim (Chalmers University of Technology. Chemistry and Chemical Engineering)

Fecha: 2016
Resumen: We encapsulate a fluorescent donor molecule and a photochromic acceptor unit (photoswitch) in polymer micelles and show that the color of the emitted fluorescence is continuously changed from blue to yellow upon light-induced isomerization of the acceptor. Interestingly, white-light generation is achieved in between. With the photoswitch in the colorless form, intense blue emission from the donor is observed, while UV-induced isomerization to the colored form induces an energy transfer reaction that quenches the donor emission and sensitizes the yellow emission from the colored photoswitch. The process is reversed by exposure to visible light, triggering isomerization to the colorless form.
Nota: Número d'acord de subvenció MINECO/CTQ2015-65439-R
Derechos: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. Creative Commons
Lengua: Anglès.
Documento: article ; recerca ; publishedVersion
Publicado en: Chemical Science, Vol. 7, Num. 9 (June 2016) , p. 5867-5871, ISSN 2041-6539

PMID: 30034727
DOI: 10.1039/c6sc01623e


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