960化工网
Photofunctional hybrids of rare earth complexes covalently bonded to ZnO core–shell nanoparticle substrate through polymer linkage†
Yan-Fei Shao,Bing Yan
Dalton Transactions Pub Date : 04/25/2012 00:00:00 , DOI:10.1039/C2DT30714F
Abstract

A novel series of multi-component hybrids are assembled based on rare earth coordinated to rare earth ion (Eu3+, Tb3+, Sm3+, Dy3+) complex systems and ZnO nanocomposites through three different ester units (ethyl methacrylate (EMA), 2-hydroxyethyl methacrylate (HEMA) and 2,2,3,4,4,4-hexafluorobutyl methacrylate (HFMA)) as functional polymer linkages. Methacrylic-group-modified ZnO nanoparticles (designated ZnO-MAA) are synthesized based on the reaction between zinc methacrylate and LiOH with the molar ratio 1 : 3.5 via sol–gel process. The final hybrid materials are prepared by introducing rare earth complexes into ZnO-MAA matrix via addition polymerization reaction in the presence of benzoyl peroxide (BPO) as the initiator. The detailed characterization and luminescence of these hybrid materials are discussed. It is found that ZnO-MAA-HEMA/EMA/HFBMA-RE-phen hybrid systems have effective intramolecular energy transfer process and exhibit longer lifetime and higher quantum efficiency.

Graphical abstract: Photofunctional hybrids of rare earth complexes covalently bonded to ZnO core–shell nanoparticle substrate through polymer linkage
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