Affiliations: [a] School of Chemistry & Environmental Engineering, Changchun University of Science and Technology, Changchun, China | [b] School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, Weihai, China | [c] Research Institute for New Energy, Changchun University of Science and Technology, Changchun, China
Correspondence:
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Corresponding author: Hui YU, School of Chemistry & Environmental Engineering, Changchun University of Scienceand Technology, Changchun 130022, China, and Long XIA, School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China. Tel.: +86 431 85582706; Fax: +86 431 85383815; E-mail: [email protected] (Yu); [email protected] (Xia).
Abstract: SBA-15 surface was modified with a silane reagent then coupled to EDTA. Sm3+ ions were coordinated to the surface of the material through the EDTA groups. The Sm-EDTA-(SBA-15) composite materials was luminescent. The EDTA enhanced the energy-transfer efficiency of the triplet level of ligands to the 4f electron of Sm3+ ion, and enhanced the luminescence intensity of the Sm3+ ion. The Sm3+ was grafted on the surface of SBA-15 porous and may be shielded from the environment. This reduced the probability of coordination of the Sm ion by water. As a result, the temperature quenching effect was suppressed and the energy-transfer efficiency was increased. These factors made the Sm-EDTA-(SBA-15) materials have much higher relative luminescent intensities.
