Ternary europium mesoporous polymeric hybrid materials Eu(尾-diketonate)₃pvpd-SBA-15(16): host-guest construction, characterization and photoluminescence

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• 作者：Yan-Jing Gu ; Bing Yan ; ^{byan@tongji.edu.cn} ; Yan-Yan Li
• 关键词：Europium complexes ; Polymer ligand ; Organic&ndash ; inorganic hybrids ; Luminescence ; Mesoporous silica
• 刊名：Journal of Solid State Chemistry
• 出版年：2012
• 期刊代码：130_00224596
• 类别：ch
• 出版时间：June, 2012
• 卷：190
• 期：Complete
• 页码：36-44
• 文件大小：892 K

摘要

Novel organic-inorganic mesoporous luminescent polymeric hybrid materials containing europium(III) complexes incorporated to mesoporous silica SBA-15/SBA-16 have been prepared by simple physical doping (impregnation) methods, followed by the addition polymerization reaction of the monomer 4-vinylpyridine (vpd) extending along the mesoporous channels. The precursor europium(III) complexes are synthesized by 尾-diketonate (尾-diketonate=2-thenoyltrifluoroacetonate (tta), hexafluoroacetylacetonate (hfac), trifluoroacetylacetonate (taa)) and monomer 4-vinylpyridine (vpd) coordinated to Eu³⁺, and SBA-15/SBA-16 are obtained via a sol-gel process. After the physical doping and the polymerization reaction, the final ternary materials Eu(尾-diketonate)₃pvpd-SBA-15/Eu(尾-diketonate)₃pvpd-SBA-16 (尾-diketonate=tta, hfac, taa) are received. The physical properties and espeically the photoluminescence of these hybrids are characterized, and the XRD and BET results reveal that all of these hybrid materials have uniformity in the mesostructure. The detailed luminescence investigation on all the materials show that Eu(tta)₃pvpd-SBA-16 have the highest luminescence intensity and the materials with taa ligands have longer lifetimes.