摘要
用饱和水溶液法制备了β-环糊精(-βCD)-乙酰二茂铁缩氨基硫脲(TAF)的超分子包合物,并研究了其形成特征。元素分析及溶解常数测定结果证明两者形成了1∶1型包合物,UV-Vis光度法求得包合常数K为2.27×102L.mol-1。通过UV,FTIR,X射线粉末衍射进一步研究包结特性。同时,从微环境的角度研究了不同溶剂对-βCD-TAF和TAF的UV光谱的影响以及在水溶液体系中pH值的变化对TAF和包合物的影响特征。结果表明溶液中不同微环境对客体及超分子包合物的电子光谱有着显著不同的影响。
Inclusion complex of acetylferrocene-thiosemicarbazone（TAF） with β-cyclodextrin （β-CD） has been prepared by using kneading method. Elemental analysis and the solubility determination proved that 1 ： 1 inclusion complex has been formed. Characterization of the inclusion complex was studied by UV, FTIR, and X-ray diffraetometry. The association constant was calculated to be 227 L·mol^-1 from the straight portion of the phase-solubility diagram. Furthermore, the influence of different solvents and pH on UV spectrum of aeetylferrocene-thiosemicarbazone and β-CD -TAF was discussed respectively. The results show that different microenvironment has apparently different effects on electric spectra of guest and inclusion complexes.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2005年第10期1568-1572,共5页
Spectroscopy and Spectral Analysis
基金
教育部重点研究计划资助课题(2002-2004)
宁夏自然科学基金资助课题(2002-B024)资助项目
关键词
乙酰二茂铁缩氨基硫脲
Β-环糊精
超分子包合物
电子光谱
微环境效应
Acetylferrocene-thiosemicarbazone（TAF）
β-cyclodextrin（β-CD）
Inclusion complex
Electric spectrum, Micro-environmental effects
