Researchers based at the Chinese Academy of Sciences have prepared a composite electrode of organic–inorganic polymers and Pyronin Y-doped silica nanoparticles, which was coated with poly (3,4-ethylenedioxythiophene) (PEDOT), in the presence of phosphododecamolybdic acid (PMo12).
The fluoresence of the nanoparticles can be switched on and off in aqueous solution by oxidation and reduction of the PEDOT, with fast colouration and bleaching of the film.
The materials have potential applications in organic LEDs and other photoelectric devices.
Reversible electroswitchable luminescence in thin films of organic–inorganic hybrid assemblies
Yanling Zhai, Lihua Jin, Chengzhou Zhu, Peng Hu, Lei Han, Erkang Wang and Shaojun Dong