An Interfacial Europium Complex on SiO2 Nanoparticles: Reduction-Induced Blue Emission System.

ABSTRACT: In this study, Eu-coated SiO2 nanoparticles have been prepared, consisting of an interfacial complex of Eu and 1,10-phenanthroline (phen) at the solid surfaces of the SiO2/Eu nanostructures. The as-prepared SiO2/Eu/phen nanoparticles exhibits sharp red emission via energy transfer from the phen to the Eu(III). After sintering at 200 °C in air, the emission is tuned from red to blue. The blue emission is originated from Eu(II). This reduction-induced emissive phenomenon resulted from the electron-donating environment created by the surrounding phen and SiO2, which is the first reported fabrication of a stable Eu(II)-based emissive material using mild conditions (reaction in air and at low temperature) and an organic-inorganic hybrid nanostructure. The existence of two different stable oxida

SUBMITTER: Ishii A 

PROVIDER: S-EPMC4485170 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature