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A new approach for synthesis of SiO2/poly(2-hydroxyethyl methacrylate):Tb3+ nanohybrids by combination of surface-initiated raft polymerization and coordination chemistry

A facile strategy for growing the poly(2-hydroxyethyl methacrylate) encapsulated on the surface of SiO 2 nanoparticles (SiO 2 /PHEMA) as a molecular host matrix for the luminescent Tb 3+ via a combination of surface-initiated reversible addition fragmentation chain transfer polymerization and coordi...

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Published in:Polymer bulletin (Berlin, Germany) Germany), 2016-09, Vol.73 (9), p.2627-2638
Main Authors: Bach, Long Giang, Bui, Quynh Thi Phuong, Cao, Xuan Thang, Ho, Van Thi Thanh, Lim, Kwon Taek
Format: Article
Language:English
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Summary:A facile strategy for growing the poly(2-hydroxyethyl methacrylate) encapsulated on the surface of SiO 2 nanoparticles (SiO 2 /PHEMA) as a molecular host matrix for the luminescent Tb 3+ via a combination of surface-initiated reversible addition fragmentation chain transfer polymerization and coordination chemistry was successfully developed. The structure, morphology and fluorescence properties of the materials were investigated using relevant physical and spectral techniques. The core–shell structure and uniform dispersion of SiO 2 /PHEMA and SiO 2 /PHEMA:Tb 3+ complexes were found according to SEM and TEM analyses while their surface bonding characteristics were determined via FT-IR analysis. In photoluminescence measurement, the SiO 2 /PHEMA:Tb 3+ nanoparticles showed characteristic emissions of Tb 3+ with the strongest ( 5 D 4  →  7 F 5 ) green emission without detectable emissions of ligands, demonstrating that SiO 2 framework covalently bonded with PHEMA segments acting as an efficient matrix for sensitization of fluorescent Tb 3+ ions.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-016-1712-5