Novel Rare Earth–Polyvinyl Pyridine Complex Functionalized Hybrid Silica Microspheres: Molecular Assembly and Photophysical Property

Abstract

The functional silica microspheres are derived from the three different silane crosslinking reagents, and then the polyvinyl pyridine-based rare earth hybrids are synthesized through free radical copolymerization of rare earth-vinyl pyridine complex monomer with these functionalized silica microspheres (RE = Eu, Tb). The obtained hybrids are characterized by Fourier transform infrared, X-ray diffraction, Scanning electronic microscope and photoluminescence spectra. The intramolecular energy transfer process between rare earth ions and polymer polyvinyl pyrrolidone matrices took place within these polymer-based hybrids and especially the quantum efficiency of europium hybrids are determined, suggesting that the hybrid material systems derived from different functional silica microspheres present different luminescence efficiencies.

Two Series of Multicomponent Rare Earth (Eu3+, Tb3+, Sm3+) Polymeric Hybrids: Chemically Bonded Assembly and Photophysical Properties

“…Moreover, the hybrid material with the entrapping of rare earth complexes in sol–gel derived host has been synthesized. On the basis of the silica derived materials, the polymer chain can be introduced to assemble the rare earth silica/polymer hybrids, especially through the functionalized β‐diketone linkage (16) where organic polymer and ligands could cooperate with the center ions through chemical bonds (17–20). All kinds of rare earth‐based hybrid materials have been summarized in the corresponding reviews (21,22).…”