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采用水热合成法制备了一个一维配位聚合物{[Co(dpa)(H2O)4].(dpdo).(H2O)}n(1)(H2dpa=2,2′-联苯二酸,dpdo=N,N′-二氧化-4,4′-联吡啶),通过红外光谱、紫外光谱、元素分析、XRPD、TGA和X-射线单晶衍射进行了表征。Co(Ⅱ)原子采取了畸变的八面体构型,6个配位氧原子分别来自于2个dpa2-配体和4个配位水分子。每一个dpa2-配体桥联2个Co髤中心,每一个Co(Ⅱ)原子与2个dpa2-配体配位进而形成了21螺旋链结构。借助溶剂水分子的连接作用,螺旋链之间通过多种O-H…O氢键作用形成了2D网格,通过dpdo和2D网格之间多种类型的氢键作用形成了三维超分子结构。测定了室温下聚合物1的固体荧光光谱。
A one-dimensional coordination polymer {[Co (dpa) (H2O) 4] (dpdo) (H2O)} n (1) (H2dpa = 2,2’-biphenyl dicarboxylic acid , dpdo = N, N’-dioxide-4,4’-bipyridine) were characterized by IR, UV, elemental analysis, XRPD, TGA and X-ray single crystal diffraction. The distorted octahedral configuration of the Co (Ⅱ) atom is taken. The six coordination oxygen atoms are derived from two dpa2-ligands and four coordination water molecules, respectively. Each dpa2-ligand bridges two Co 髤 centers, and each Co (Ⅱ) atom coordinates with two dpa2-ligands to form a 21-helical chain. With the help of the connection of solvent and water molecules, 2D meshes are formed by the helical chains through a variety of O-H ... O hydrogen bonds, and three-dimensional supramolecular structures are formed by various types of hydrogen bonding between dpdo and 2D meshes. The solid state fluorescence spectrum of Polymer 1 was measured at room temperature.