Combination of Surface Initiated Reversible Addition Fragmentation Chain Transfer Polymerization, Thiol-Ene Click Chemistry and Coordination Chemistry for the Fabrication of a Novel Photoluminescent Hydroxyapatite Nanohybrids

Long Giang Bach, Xuan Thang Cao, Md. Rafiqul Islam, Hyun Gyu Kim, and Kwon Taek Lim

Journal of Nanoscience and Nanotechnology, Vol. 15, 5897–5900, 2015

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Abstract

Hydroxyapatite nanocrystals (HAPs) were encapsulated by poly(allyl methacrylate) (PAMA) employing controlled surface-initiated reversible addition-fragmentation chain transfer polymerization of allyl methacrylate to give HAP-PAMA nanohybrids. The subsequent thiol-ene coupling of nanohybrids with 2-mercaptosuccinic acid resulted in HAP-PAMA-COOH possessing multicarboxyl functionality. The coordination of the nanohybrids with Tb3+ions in the presence of 1,10-phenanthroline (Phen) afforded photoluminescent Tb3+ tagged HAPs-PAMA nanohybrid complexes (HAP-PAMA-Tb3+
-Phen). The structure, morphology, and fluorescence properties of the Tb3+ coordinated nanohybrid complexes were investigated by respective physical and spectral studies.

Keywords

Hydroxyapatite, RAFT Polymerization, Thiol-Ene Click Reaction, Photoluminescence.