Formation of the Inclusion Complex of Orange Ⅱ with β-Cyclodextrin and Its Photostability

作     者：Lu Ping 1,2 , Liu Bin 1,3 , Zhang Zhe 1 , Wu Feng 1 , Deng Nan-sheng 1 1. College of Resource and Environmental Science, Wuhan University, Wuhan 430072, Hubei, China 2. School of Chemistry and Environmental Engineering, Jianghan University , Wuhan 430056, Hubei, China 3. Department of Environmental and Chemical Engineering, Huangshi Polytechnic College, Huangshi 435003, Hubei, China 

出 版 物：《Wuhan University Journal of Natural Sciences》 (武汉大学学报自然科学版(英文))

年 卷 期：2003年第4期

页      面：1147-1152页

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：SupportedbytheNationalNaturalScienceFoundationofChina(2 0 1 770 1 7) 

主　　题：β-Cyclodextrin Orange Ⅱ inclusion complex photostability 

摘      要：Inclusion complex of Orange II with β-Cyclodextrin （β-CD） and the anti-photolysis effect under UV-light were investigated. The molar ratio of inclusion complex of β-Cyclodextrin and Orange Ⅱ is 1∶1. The formation constant K=1.236×10 3 L/mol was determined by the UV and Fluorescence spectra respectively, which was quite in accordance with the calculation with a modified Benesi-Hildbrand equation. The inclusion complex was characterized by the IR spectra and the molar ratio of inclusion complex is 1∶1 too. The formation constant K=1.266×10 3 L/mol was determined by 1 H NMR analysis and was nearly the same by UV and fluorescence spectra. The photocatalytic decolorization rate of Orange Ⅱ solutions containing β-CD and TiO_ 2 was smaller by 51.9% than that of the Orange Ⅱ solutions only containing TiO_ 2 , while in the case of direct photolysis of Orange Ⅱ solutions, β-CD can lower the photolysis rate by 48.1% under UV-light. This result indicates β-CD can inhibit the photolysis and photocatalytic decolorization of Orange Ⅱ under UV-light. The β-CD inclusion complex was found to be persistent to UV-light photolysis.