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Syntheses,Crystal Structures and Luminescent Properties of Two Lanthanide Coordination Polymers Based on Bifunctional Ligand 被引量:3
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作者 王展 谭聪聪 +4 位作者 任祥敏 毛艳如 姚清侠 李大成 窦建民 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2017年第10期1631-1638,共8页
Two lanthanide coordination polymers, [Eu(HL)(L)(H2O)2]n(1) and [Tb(H0.5L)2]n(2), based on bifunctional 5-(1H-imidazol-1-yl) isophthalic acid(H2L), are hydrothermally synthesized and characterized by b... Two lanthanide coordination polymers, [Eu(HL)(L)(H2O)2]n(1) and [Tb(H0.5L)2]n(2), based on bifunctional 5-(1H-imidazol-1-yl) isophthalic acid(H2L), are hydrothermally synthesized and characterized by both single-crystal and powder X-ray diffraction analyses, and FT-IR. In compound 1, the basic inorganic building unit of the coordination network is the dinuclear [Eu2(COO)6] cluster. Each [Eu2(COO)6] cluster connects four HL^- ligands and each HLligand links two [Eu2(COO)6] clusters, resulting in a 2D coordination layer. The adjacent 2 D layers are further connected via neighboring inter-layer hydrogen bonds to give a 3D supramolecular structure. In compound 2, the Tb^3+ is coordinated to six oxygen atoms. Each Tb^3+ ion connects six ligands and each ligand links three Tb^3+ ions, leading to a 3D coordination polymeric network which exhibits remarkably high thermal stability up to 500℃. Furthermore, due to the successful incorporation of Tb^3+, compound 2 displays characteristic luminescent emission in the solid state at room temperature. The combination of high thermal stability and fluorescent property of compound 2 would make it as a promising light-emitting material. 展开更多
关键词 lanthanide coordination polymers bifunctional ligand luminescent properties
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