Study on Photoluminescence of 2-(4-Chloro-Benzoyl)Benzoic Acid Complexes
LI Zhao-ye1, GENG Xiao-tian1, WANG Juan1, ZHAO Ying2, WU Hong3, YAN Jian-bo3, WANG Yun-you3, SUN Bo1*
1. Department of Material Chemistry for College of Chemistry, Nankai University, Tianjin 300071, China 2. State key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry，Chinese Academy of Sciences, Beijing 100080, China 3. China Dankong Industry and Trade Group Company, Taizhou 318000, China
Abstract：Eight complexes of europium and terbium were synthesized, with 2-(4-chloro-benzoyl)benzoic acid as an essential ligand and other three distinct ligands, including 1,10-phenanthroline, triphenylphosphine oxide and diphenyl sulfoxide, as selective ligands. They were Eu(CBBA)3(H2O)4, Eu(CBBA)3(Phen)(H2O)6, Eu(CBBA)3(TPPO)(H2O)4, Eu(CBBA)3(DPSO)(H2O)5, Tb(CBBA)3(H2O)4, Tb(CBBA)3(Phen)(H2O)3, Tb(CBBA)3(TPPO)(H2O)2 and Tb(CBBA)3(DPSO)(H2O)4, respectively. Then their excitation and emission spectra were measured, and that how the central ions were differently impacted by the three second ligands was also compared. It was easily to be seen that from the spectra all the complexes luminesced with the similar special peaks. However, the luminescence intensity was evidently distinct, because 1,10-phenanthroline, triphenylphosphine oxide and diphenyl sulfoxide were coordinated with them, and exerted different effects on transferring energy to the central ions. In the complexes of europium, Eu(CBBA)3(Phen)(H2O)6 and Eu(CBBA)3(DPSO)(H2O)5 each luminesced more strongly than Eu(CBBA)3(H2O)4, however, Eu(CBBA)3(TPPO)(H2O)4 luminesced more weakly than Eu(CBBA)3(H2O)4. Moreover, Eu(CBBA)3(DPSO)(H2O)5 luminesced more intensely than Eu(CBBA)3(Phen)(H2O)6. So 1,10-phenanthroline and diphenyl sulfoxide could sensitize the luminescence, whereas triphenylphosphine oxide could quench the luminescence in the certain Eu complexes. In Tb complexes, diphenyl sulfoxide sensitized the luminescence of Tb(CBBA)3(DPSO)(H2O)4, and reversely, 1,10-phenanthroline and triphenylphosphine oxide quenched differently the luminescence of Tb(CBBA)3(Phen)(H2O)3 and Tb(CBBA)3(TPPO)(H2O)2. 1,10-phenanthroline quenched more strongly than triphenylphosphine. From IR spectra, the structure of the complexes was conjectured approximately. In the region of 3 200-3 600 cm-1, there were some weak vibrant peaks owed to hydroxyl of water, a good proof that there were water molecules in the complexes themselves.
[1] LI Yuan-yuan, YAN Tao, WANG Dong-mei, et al(李媛媛, 闫 涛, 王冬梅, 等). Journal of Jinan University(Natural Sciences)(济南大学学报·自然科学版), 2005, 19(2): 113. [2] Soinie Hemmilai. Clin. Chem., 1979, 25(3): 353. [3] Yang Y S, Gong M L, Li Y Y, et al. Journal of Alloys and Compounds, 1994, 207-208: 112. [4] Wu S L, Wu Y L, Yang Y S. Jounal of Alloys and Compounds, 1992, 180(1-2): 391. [5] Wu S L, Wu Y L, Yang Y S. Journal of Alloys and Compounds, 1992, 180(1-2): 399. [6] Wu S L, Wu Y L, Yang Y S. Journal of Alloys and Compounds, 1992, 180(1-2): 403. [7] Gong Menglian, Meng Jianxin, Wu Weining, et al. Journal of Rare Earths, 1995, 13(3): 166. [8] SHI Hua-hong, YANG Yan-sheng(史华红, 杨燕生). Acta Scientiarum Naturalium Universitatis Sunyatseni(中山大学学报·自然科学版), 1996, 35(2), 71. [9] 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. [10] ZHANG Ying, JIN Lin-pei, Lü 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. [11] Weissman S I. Chem. Phys., 1942, 10(4): 214. [12] ZHANG Quan-ping, DU Hai-yan, SUN Jia-yue, et al(张泉平, 杜海燕, 孙家跃, 等). New Chemical Materials(化工新型材料), 2006, 34(6): 1. [13] DAI Li-yan, WU Cai-juan, CHEN Ying-qi(戴立言, 吴彩娟, 陈英奇). Journal of Chemical Engineering of Chinese Universities(高等学校化学工程学报)，2004，18(1): 94. [14] DONG Qing-nian(董庆年). Infrared Spectrometry(红外光谱法). Beijing: Chemical Industry Press(北京：化学工业出版社)，1979. 132. [15] WANG Ze-min, HE Qi-zhuang, YU Ying-hao，et al(王则民, 何其庄, 俞膺浩，等). Journal of Shanghai Normal University(Natural Sciences)(上海师范大学学报·自然科学版), 2000, 29(1): 70.
