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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。
Using biphenyl-4,4’-dicarboxylic acid and zinc nitrate hexahydrate as raw materials, under the same reaction conditions, different auxiliary ligands (2,2’-dimethyl-4,4’-bipyridine (DBA) (dmbpy) _ (0.5)] · 2H_2O} _n (1) and [Zn_2 (DBA) _2 (dabco)] (H 2 DBA = diphenyl-4,4’-dicarboxylic acid, dmbpy = 2,2’-dimethyl-4,4’-bipyridine, dabco = triethylenediamine). The complex was characterized by elemental analysis, infrared spectroscopy, differential thermal analysis, X-ray powder diffraction and single crystal X-ray diffraction. The results show that compound 1 is a two-dimensional (4,4) network structure and two two-dimensional structures further form a 2D → 2D interlocking network structure by interlocking in parallel directions. Compound 2 is a one-dimensional ribbon structure. Thermal stability indicates that compound 1 is stable to 370 ° C; and compound 2 is poorly stable. Fluorescence analysis showed that complexes 1 and 2 both emit blue fluorescence at room temperature in solid state, with fluorescence lifetime of 231.4 ns and 2.33 ns, respectively.