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Emission color tuning and white-light generation based on photochromic control of energy transfer reactions in polymer micelles

Magnus Å. Bälter (Institutionen för kemi och kemiteknik, Fysikalisk kemi) ; Shiming Li (Institutionen för kemi och kemiteknik, Fysikalisk kemi) ; Masakazu Morimoto ; Sicheng Tang ; Jordi Hernando ; Gonzalo Guirado ; Masahiro Irie ; Françisco M. Raymo ; Joakim Andréasson (Institutionen för kemi och kemiteknik, Fysikalisk kemi)
Chemical Science Vol. 7 (2016), p. 5867-5871.
[Artikel, refereegranskad vetenskaplig]

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.



Denna post skapades 2016-08-18. Senast ändrad 2016-08-18.
CPL Pubid: 240378

 

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Institutioner (Chalmers)

Institutionen för kemi och kemiteknik, Fysikalisk kemi

Ämnesområden

Fysikalisk kemi

Chalmers infrastruktur