合成了一个新颖的镧配位聚合物{[La(HPAA)3(H2O)2].2(bipy).H2O}n(1)(HHPAA=对羟基苯乙酸,bipy=4,4′-联吡啶)。并通过元素分析、红外光谱和热重分析对产物进行了表征,用单晶X-射线衍射方法测定了配合物的晶体结构。在配合物1中,La(Ⅲ)的配位构型为畸变的双帽反四棱柱多面体。配合物中每个La(Ⅲ)离子与对羟基苯乙酸根中的氧原子和水分子中的氧原子配位,形成了一维链状结构,而4,4′-联吡啶并未参与配位。此外,用荧光光谱研究了配合物与DNA之间的相互作用。 A novel lanthanum coordination polymer {[La (HPAA) 3 (H2O) 2] 2 (bipy) .H2O} n (1) Pyridine). The product was characterized by elemental analysis, FTIR and TG analysis. The crystal structure of the complex was determined by single crystal X-ray diffraction. In complex 1, the coordination configuration of La (Ⅲ) is a distorted double-capped anti-tetrahedron polyhedron. Each La (Ⅲ) ion in the complex coordinated with the oxygen atom in p-hydroxyphenylacetate and the oxygen atom in water to form a one-dimensional chain structure, while 4,4’-dipyridyl was not involved Bit. In addition, the interaction between the complex and DNA was studied by fluorescence spectroscopy.