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Inorg Chem. 2008 Jul 7;47(13):5601-11. doi: 10.1021/ic7021825. Epub 2008 May 28.

Lanthanide-centered covalently bonded hybrids through sulfide linkage: molecular assembly, physical characterization, and photoluminescence.

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1
Department of Chemistry, Tongji University, Shanghai 200092, China. byan@tongji.edu.cn

Abstract

A series of novel photoactive lanthanide (europium, terbium, dysprosium, samarium) hybrid materials with organic parts covalently bonded to inorganic parts via sulfide linkage have been assembled by the sol-gel process. The organic parts as molecular bridge are obtained from the functionalized thiosalicylic acids by five silane crosslinking reagents, 3-chloropropyltrimethoxysilane, 3-methacryloyloxypropyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, and 3-(triethoxysilyl)propylisocyanate. The intramolecular energy transfer process between lanthanide ions and the molecular bridges took place within these molecular-based hybrids and especially the quantum efficiency of europium hybrids were determined, suggesting that the hybrid material systems derived from different molecular bridges present different luminescence efficiencies.

PMID:
18510293
DOI:
10.1021/ic7021825
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