Journal of Fluorescence

, Volume 21, Issue 2, pp 653–662 | Cite as

Rare Earth Centered Hybrid Materials: Tb3+ Covalently Bonded with La3+, Gd3+, Y3+ Through Sulfonamide Bridge and Luminescence Enhancement

Original Paper
First Online:
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Abstract

The organic ligand 5-sulfosalicylic acid (SSA) is grafted by (3-aminopropyl) triethoxysilane (APTES) to achieve functionalized sulfonamide bridge (SSA-Si) which can both coordinate to Ln3+ to form luminescent center and link inorganic Si-O network through hydrolysis and condensation reaction with tetraethoxysilane (TEOS). Thus the organic–inorganic hybrid is obtained with sol-gel method. The organic polymer poly-methyl methacrylate (PMMA) acts as another precursor is prepared through the direct addition polymerization of MMA monomer in the presence of the initiator BPO (benzoyl peroxide). The two kinds of precursors are coordinated to the Ln3+ simultaneously to form organic–inorganic-polymeric hybrids which contain both inorganic Si-O-Si net and organic periodic C–C chains. In these complicated compounds we intercalate different ratios of Tb3+ and inert lanthanide ion (La3+, Gd3+, Y3+) and find that the introduction of the inert lanthanide ions can enhance the luminescence intensity. This enhancement phenomenon is called co-luminescence effect which is studied by emission spectra in this paper.

Keywords

Rare earth ion Organic–inorganic-polymeric hybrids Energy transfer Co-luminescence 
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Notes

Acknowledgements

This work is supported by the National Natural Science Foundation of China (20971100) and Program for New Century Excellent Talents in University (NCET-08-0398).

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Department of ChemistryTongji UniversityShanghaiChina

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