4-(8-羟基喹啉-7-亚甲氨基)苯甲酸稀土配合物的合成与表征

Synthesis and characterization of 4-((8-hydroxyquinclin-7-yl) methyleneamino) benzoic acid rare earth complexes

以8-羟基喹啉为原料,通过瑞穆尔-帝曼反应,合成了7-甲酰基-8-羟基喹啉,并进一步得到4-(8-羟基喹啉-7-亚甲氨基)苯甲酸及其稀土配合物,用IR、UV、1H NMR、元素分析、荧光光谱等对其结构和性能进行表征,确定了四种稀土配合物的组成为ReL(2H2O)·3H2O(Re=Y3+、La3+、Sm3+、Eu3+),测定了四种稀土配合物的荧光性,在激发光源辐射下,四种稀土配合物最大发射波长分别为471nm、475nm、420nm、477nm,对Y3+、Sm3+两种稀土配合物的荧光寿命进行了测定,其荧光寿命分别为1.2775微秒和1.1349微秒.

the 8-hydroxyquincline-7-earboxaldehyde was synthesized by 8-hydroxyquineline through reamer-tiemann reaction, and progressively achieving 4-（（8-hydroxyquinelin-7-yl） methyleneamino）benzoic acid and its rare earth eomplexes. Their structure and properties were characterized by IR,UV,1H NMR, elemental analysis,fluorescence spectrum. The composition of four rare earth complexes were confirmed to be ReL（2H2O）·3H2O（Re=Y^3＋、La^3＋、Sm^3＋、Eu^3＋）. The fluorescence properties of four rare earth complexes were studied by photoluminescence under the excitation souree. The peak wavelength（ λmax ）of four rare earth complexes was 471nm,475nm,420nm and 477nm. The fluorescence lifetime of y3, and Sm3~ rare earth eomplexes were 1. 27751μs and 1. 1349μs respectively.