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首页> 外文期刊>RSC Advances >Synthesis, structures, surface photovoltage and luminescence properties of two new nickel(II) carboxyphosphonates with a 3D framework structure
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Synthesis, structures, surface photovoltage and luminescence properties of two new nickel(II) carboxyphosphonates with a 3D framework structure

机译：具有3D骨架结构的两种新型羧基羧酸镍（II）的合成，结构，表面光电压和发光性能

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摘要

By introduction of 4,4'-bipyridine (4,4'-bipy) as a second organic ligand, two new nickel(II) carboxyphosphonates with a 3D framework structure, namely, [Ni-3(H2L)(2)(4,4'-bipy)(H2O)(4)] (1) and [Ni-3(H2L')(2)(4,4'-bipy)(2)(H2O)(2)]center dot 4H(2)O (2) (H5L = 4-{[bis(phosphonomethyl)amino]methyl}benzoic acid; H5L' = N,N-bis(phosphonomethyl)aminoacetic acid) have been synthesized under hydrothermal conditions. Compounds 1 and 2 both feature three-dimensional (3D) framework structures with twodimensional (2D) layers pillared by 4,4'-bipy. For compound 1, {Ni(1)O4N2}, {Ni(2)O-6} and {CPO3} polyhedra form a 2D inorganic layer in the bc-plane via corner-sharing. Then adjacent layers are further pillared by 4,4'-bipy ligands into a 3D pillar-layered structure. In compound 2, {Ni(1)O4N2}, {Ni(2)O4N2} and {CPO3} polyhedra are interconnected by carboxyphosphonate ligands to a 2D layer in the ab-plane. Neighboring layers are further cross-linked via 4,4'-bipy ligands, generating a 3D framework structure. Whereas the carboxylate oxygen atoms of carboxyphosphonate ligands are coordinated to Ni(II) atoms in compound 2 but not in compound 1. The surface photovoltage and luminescence properties of compounds 1 and 2 have been investigated at the same time.
机译：通过引入4,4'-联吡啶（4,4'-联吡啶）作为第二有机配体，形成了具有3D骨架结构的两种新的镍（II）羧酸镍镍盐，即[Ni-3（H2L）（2）（4 ，4'-bipy）（H2O）（4）]（1）和[Ni-3（H2L'）（2）（4,4'-bipy）（2）（H2O）（2）]中心点4H（ 2）O（2）（H5L = 4-{[双（膦酰基甲基）氨基]甲基}苯甲酸; H5L'= N，N-双（膦酰基甲基）氨基乙酸）已在水热条件下合成。化合物1和2均具有三维（3D）框架结构，其中二维（2D）层由4,4'-bipy支撑。对于化合物1，{Ni（1）O4N2}，{Ni（2）O-6}和{CPO3}多面体通过角共享在bc平面中形成2D无机层。然后，相邻的层进一步由4,4'-bipy配体立柱形成3D立柱层状结构。在化合物2中，{Ni（1）O4N2}，{Ni（2）O4N2}和{CPO3}多面体通过羧基膦酸酯配体互连到ab平面中的2D层。相邻的层通过4,4'-bipy配体进一步交联，生成3D框架结构。而羧基膦酸酯配体的羧基氧原子与化合物2中的Ni（II）原子配位，而不与化合物1中的Ni（II）原子配位。化合物1和2的表面光电压和发光特性已同时进行了研究。

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