辅助配体导向合成两个锌金属配位聚合物:结构,稳定性和荧光性质（英文）

Auxiliary Ligands Controlled Assembly of Two Zinc Coordination Polymers: Structures, Stability and Luminescence

以二苯-4,4′-二羧酸和六水硝酸锌为原料,在相同反应条件下,通过改变不同的辅助配体(2,2′-二甲基-4,4′-联吡啶和三乙烯二胺),合成出2个金属有机配位聚合物:{[Zn(DBA)(dmbpy)_(0.5)]·2H_2O}_n(1)和[Zn_2(DBA)_2(dabco)]_n(2)(H_2DBA=二苯-4,4′-二羧酸,dmbpy=2,2′-二甲基-4,4′-联吡啶,dabco=三乙烯二胺)。通过元素分析、红外光谱、差热分析、X射线粉末衍射和X射线单晶衍射等手段对配合物进行了结构表征。结果显示,化合物1为二维(4,4)网络结构,2个二维结构在平行方向上通过互锁进一步形成2D→2D的互锁网络结构。化合物2为一维带状结构。热稳定性表明化合物1能够稳定到370℃;而化合物2稳定性差。荧光分析表明常温固态下配合物1和2均发射蓝色荧光,荧光寿命分别为231.4 ns和2.33 ns。

By changing the auxilary ligands, two zinc-based coordination polymers （CPs）, {[Zn（DBA）（dmbpy）05]· 2H2O}n （1） and [Zn2（DBA）2（dabco）]n （2） （DBA=4,4＇-methylenedibenzoate, dmbpy=2,2＇-dimethyl-4,4＇-bipyridine, dabeo=triethylenediamine） have been prepared based on 4,4＇-methylenedibenzoate and Zn（NO3）2· 6H2O under the same reaction conditions and were structurally characterized by elemental analysis, IR, TGA, powder X-ray diffraction and single-crystal X-ray diffraction. 1 is a 2D （4,4） network, and two nets interlock in parallel and give rise to a polycatenated layer （2D → 2D）. 2 is a ribbon-like infinite chain with dabeo ligands point alternately up and down with respect to the chain. The results of thermal analysis indicate that 1 is quite stable up to 370 ℃, whereas 2 shows low thermal stability. Finally, both of 1 and 2 emit the intensely blue characteristic luminescence at room temperature, with lifetimes of up to 231.4 ns and 2.33 ns, respectively. CCDC： 1450687, 1; 1450688, 2.