Synthesis, Characterization and Fluorescence of Eu3+,Tb3+ Complexes with 2-Thiophencarboxylic Acid and 2,2′-Bipyridine
BAO Jin-rong1,ZHAO Yong-liang1,ZHU Xiao-wei2
1. The College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China 2. Medicine College, Inner Mongolia Medical College, Hohhot 010058, China
Abstract:Two binary complexes of Eu3+ and Tb3+ with 2-thiophene carboxylic acid and two ternary complexes of Eu3+ and Tb3+ with 2-thiophene carboxylic acid(L)-2, 2′-bipyridine were synthesized. By elemental analysis, rare earth coordination titration,and molar conductivities studies,the compositions of the complexes were suggested as REL3·2H2O and REL3L′·C2H5OH(RE=Eu, Tb, L=2-thiophene carboxylic acid, L′=2, 2′-bipyridine) respectively. The ligands and coordination compounds were studied by means of IR spectra,1H NMR and fluorescence excitation and emission spectra. IR spectra and 1H NMR studies indicate that 2-thiophene carboxylic acid was bonded with RE(Ⅲ) through oxygen atoms in the carboxyl group, and 2, 2′-bipyridine ligand was bonded to RE(Ⅲ) through nitrogen atoms. The fluoresence spectra showed that the fluorescence emission intensity of ternary complexes was stronger than that of the binary complexes.
宝金荣1,赵永亮1,朱晓伟2. 铕、铽-2-噻吩甲酸-2,2′-联吡啶配合物的合成、表征及荧光性质研究[J]. 光谱学与光谱分析, 2007, 27(03): 539-542.
BAO Jin-rong1,ZHAO Yong-liang1,ZHU Xiao-wei2. Synthesis, Characterization and Fluorescence of Eu3+,Tb3+ Complexes with 2-Thiophencarboxylic Acid and 2,2′-Bipyridine . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(03): 539-542.
[1] JIN Lin-pei, WANG Ming-zhao, CAI Guan-liang, et al(金林培, 王明昭, 蔡冠梁, 等). Science in China Series, B(中国科学B辑), 1994, 24(6): 577. [2] ZHANG Ying, JIN Lin-pei, L Shao-zhe(张 颖, 金林培, 吕少哲). Journal of the Chinese Rare Earth Society(中国稀土学报), 1998, 16(1): 5. [3] Geary W. J. Coord. Chem. Rev., 1971, 7(1): 81. [4] WANG Ze-min, YU Xi-bin, YANG Hai-feng(王则民, 余锡宾, 杨海峰). Chinese Journal of Spectroscopy Laboratory(光谱实验室), 2001, 18(2): 151. [5] SUN Bo, ZHAO Ying, XU Duan-fu, et al(孙 波,赵 莹,徐端夫,等). Spectroscopy and Spectral Analysis(光谱学与光谱分析),1997,17(2): 25. [6] WANG Zheng-xiang, CHEN Hong, TAN Mei-jun, et al(王正祥, 陈 洪,谭美军,等). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2005,25(7): 1106. [7] LI Lai-ming, ZENG Guang-fu, ZHUANG Wen-de, et al(李来明, 曾广赋, 庄文德, 等). Acta Chimica Sinica(化学学报), 1988, 46: 1. [8] QIAN Guo-dong, WANG Min-quan, L Shao-zhe, et al(钱国栋, 王民权, 吕少哲, 等). Chinese Journal of Luminescence(发光学报), 1998, 19(1): 60. [9] YANG Qiu-qing, LI Lin-shu(杨秋青, 李林书). Chinese Journal of Inorganic Chemistry(无机化学报), 1994, 10(1): 86. [10] Sato Susumu, Wada Masanobu. Bull. Chem. Soc. of Japan, 1970, 43(7): 1955.