β-环糊精与常用的两种光谱探针包络作用对比研究  

Study on the Interaction ofβ-Cyclodextrin with Two Kinds of often Used Spectrum Probes by Comparative

作　　者：孙延春[1] 卢燕[1] 张英[1] 

机构地区：[1]四川理工学院化学系,四川自贡643000

出　　处：《四川理工学院学报（自然科学版）》2008年第3期69-72,共4页Journal of Sichuan University of Science & Engineering(Natural Science Edition)

摘　　要：采用紫外可见吸收光谱法研究了β-环糊精与酚酞及甲基橙的包络作用。结果表明β-环糊精与客体形成1：1的超分子包络物，包络物的稳定常数分别为1．30×10^4L／mol、1．58×10^3L／mol。包结率及包络模式将影响吸收光谱的变化趋势。主客体间疏水相互作用和范德华力是形成超分子包络物的主要驱动力，氢键影响包络物的稳定性。The inclusion complexes of β-CD with phenolphthalein and β-CD with methyl orange were studied by Uhraviolet-Vis spectra measurements. The experimental results showed that molecular inclusion complexes with stoichiometry of 1：1 and apparent formation constants were estimated to be 1.30×10^4L/mol and 1.58×10^3L/mol. The results obtained indicate that changes trend of Uhraviolet-Vis spectra was influenced by inclusion rates and model. The hydrophobic interactions and Van Der Walls force between host and guest are the main actuating force. At the same time, the complex stability is influenced by hydrogen bound.

关 键 词：Β-环糊精 酚酞 甲基橙 超分子包络物 紫外可见光谱 

分 类 号：O657.32[理学—分析化学]