Hybrid assemblies of Eu-containing polyoxometalates and hydrophilic block copolymers with enhanced emission in aqueous solution

Abstract

Core-shell nanostructures of a photoluminescent Eu-containing polyoxometalate (Eu-POM) with double-hydrophilic neutral-cationic block copolymer PEO 114-b-PDMAEMA 16 in aqueous solution were fabricated by self-assembly driven by electrostatic interactions (see scheme; neutral block blue, cationic block red). The emission of Eu-POM, which depends on the charge ratio of the Eu-POM/copolymer system, is enhanced up to 20-fold by complexation with the cationic PDMAEMA block. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.