Synthesis and photophysical properties of a highly luminescent EuIII-containing hybrid thin film

A luminescent thin film, Eu@glass, has been prepared on the surface of glass substrates from a silylated diamidopyridyl ligand L and the complex [Eu(dbm)3(H2O)2] (Hdbm = dibenzoylmethane) via a sol–gel method. The Eu@glass exhibits intense red photoluminescence under the irradiation of near UV light with a quantum yield of 26%. Compared to the compound [Eu(dbm)3(H2O)2], the photoluminescence intensity of Eu@glass is dramatically enhanced, and the emission lifetime of EuIII (0.517 ms) is more than an order of magnitude longer.

Graphical AbstractA luminescence thin film was prepared by the sol–gel method using a new silylated ligand and [Eu(dbm)3(H2O)2]. Under the radiation of UV light, the film shows intense red photoluminescence with a quantum yield of 26%.Figure optionsDownload full-size imageDownload as PowerPoint slide