A series of silver(I)-lanthanide(III) heterometallic coordination polymers: syntheses, structures and photoluminescent properties
A series of silver(I)-lanthanide(III) heterometallic coordination polymers: syntheses, structures and photoluminescent properties
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一系列银(I)-镧系(III)异金属配位聚合物：合成、结构和光致发光性能
DOI：
10.1039/c0ce00921k
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发表时间：
2011-06-01
期刊：
影响因子：
3.1
通讯作者：
Ueyama, Norikazu
中科院分区：
文献类型：
--
作者：
Chen, Min;Chen, Man-Sheng;Ueyama, Norikazu
合成了一系列新的基于5-（2-甲氧基苯基）-4-（4-氟苯基）-4-（2-甲氧基苯基）异金属配合物。（4 H-1，2，4-三唑-4-基）苯-1，3-二羧酸（H2 L），即[AgLn（L）（2）（H2O）（4）] [Ln = Nd（1）、Eu（2）和Tb（3）]、[AgLn（L）2] [Ln = Nd（4），在水热条件下成功合成了[Eu（5），Tb（6）]和[AgLn（L）（2）（H2O）]中心点H2O [LnEr（7），Yb（8）]，并通过X射线单晶衍射、红外光谱、元素分析和热重分析进行了表征。配合物1-3由二维（2D）网络组成，这些网络通过氢键和π-π相互作用进一步连接以给出三维（3D）框架。配合物4-6显示了包含2D异金属双层的3D（4，6）-连接框架。配合物7和8是3重互穿（3，4，6）连接的三维骨架。结果表明，反应温度和稀土元素对配合物的结构有很大影响。发光测量表明，2、3、5和6在可见光区显示出镧系元素的特征发射带，寿命在0.24-1.81 ms范围内，并且对于2和5最强的发射是D-5（0）-> F-7（2），对于3和6最强的发射是D-5（4）-> F-7（5）跃迁。
A series of new 4d-4f heterometallic coordination complexes based on 5-(4H-1,2,4-triazol-4-yl) benzene-1,3-dicarboxylic acid (H2L), namely [AgLn(L)(2)(H2O)(4)] [Ln = Nd (1), Eu (2) and Tb (3)], [AgLn(L)2] [Ln = Nd (4), Eu (5) and Tb (6)] and [AgLn(L)(2)(H2O)]center dot H2O [Ln Er (7) and Yb (8)] were successfully synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction, IR, elemental and thermogravimetric analyses. Complexes 1-3 consist of two-dimensional (2D) networks, which are further connected by hydrogen bonding and pi-pi interactions to give three-dimensional (3D) frameworks. Complexes 4-6 display a 3D (4,6)-connected framework containing 2D heterometallic bilayers. Complexes 7 and 8 are 3-fold interpenetrated (3,4,6)-connected 3D frameworks. The results show that the reaction temperature and the lanthanide have great influence on the structure of the complexes. Luminescent measurements revealed that 2, 3, 5 and 6 exhibit the characteristic emission bands of the lanthanide in the visible region with lifetimes in the range of 0.24-1.81 ms and the strongest emissions are D-5(0) -> F-7(2) for 2 and 5, and D-5(4) -> F-7(5) transitions for 3 and 6.