Photophysical Properties of Ternary Hybrid System of Lanthanide Center Linking Organically Modified Silica and Polymeric Chain

Abstract

According to coordination chemistry principle and molecular assembly technology, series of ternary lanthanide centered hybrid systems have been constructed through coordination bonds. Among one component (ligand) is organically modified Si-O network, which originates from the functional molecular bridge (BFPPSi) by the functionalization of 1,3-bis(2-formylphenoxy)-2-propanol (BFPP) with 3-(triethoxysilyl)propyl isocyanate. In the second component (ligand), three different organic polymeric chains are introduced, poly-(methyl methacrylate) (PMMA, from the polymerization of MMA with the benzoyl peroxide [BPO] as the initiator), poly-(methyl acrylic acid) (PMAA, from the polymerization of MAA with the BPO as the initiator), polyvinyl pyridine, respectively. All these ternary hybrid materials show homogeneous, regular microstructure, suggesting the existence of assembly process of lanthanide centers, inorganic Si-O network and organic polymer chain. Compared to the binary hybrids without polymer chain, the photoluminescent properties of these ternary hybrids present stronger luminescent intensities, longer lifetimes and higher luminescent quantum efficiencies indicating that the introduction of organic polymer chain is favorable for the luminescence of the whole hybrid systems.

Photophysical Properties of Sol–gel derived Luminescent Silicone Hybrids Synthesized via Facile Amino‐Ene Reaction

“…Siloxane lanthanide is a key ligand to obtain novel functional hybrid materials. Various siloxane precursors have been prepared via modification reactions, such as amino‐ (25,26), carboxylic‐ (27–29), sulfide‐modification (30,31) and other reactions (32–34). However, the siloxane lanthanide ligands available are still limited.…”

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).…”