化学
发光
铕
配体(生物化学)
离子
磷光
光化学
聚合物
结晶学
无机化学
荧光
有机化学
材料科学
光电子学
物理
受体
量子力学
生物化学
作者
Yanli Gai,Feilong Jiang,Lian Chen,Yang Bu,Kongzhao Su,Shaeel A. Al‐Thabaiti,Maochun Hong
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2013-06-17
卷期号:52 (13): 7658-7665
被引量:69
摘要
Reaction of europium sulfate octahydrate with p-terphenyl-3,3″,5,5″-tetracarboxylic acid (H4ptptc) in a mixed solvent system has afforded three new coordination polymers formulated as {[Eu(ptptc)0.75(H2O)2]·0.5DMF·1.5H2O}n (1), {[Me2H2N]2 [Eu2(ptptc)2(H2O)(DMF)]·1.5DMF·7H2O}n (2), and {[Eu(Hptptc)(H2O)4]·0.5DMF·H2O}n (3). Complex 1 exhibits a three-dimensional (3D) metal–organic framework based on {Eu2(μ2-COO)2(COO)4}n chains, complex 2 shows a 3D metal–organic framework constructed by [Eu2(μ2-COO)2(COO)6]2– dimetallic subunits, and complex 3 features a 2D layer architecture assembling to 3D framework through π···π interactions. All complexes exhibit the characteristic red luminescence of Eu(III) ion. The triplet state of ligand H4ptptc matches well with the emission level of Eu(III) ion, which allows the preparation of new optical materials with enhanced luminescence properties. The luminescence properties of these complexes are further studied in terms of their emission quantum yields, emission lifetimes, and the radiative/nonradiative rates.
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