摘要
用饱和水溶液法制备了β-环糊精(β-CD)-苯甲酰二茂铁缩氨基硫脲(TBF)的超分子包合物。等摩尔连续变化法证明两者形成了摩尔比为2∶3(TBF∶β-CD)的包合物,通过测定的相应紫外光谱数据求得包合常数K为5.04×1013(L4.(mol)-4)。UV,FTIR,X射线粉末衍射进一步研究其包结特性。同时,从微环境的角度研究了不同溶剂对β-CD-TBF和TBF的UV光谱的影响以及在水溶液体系中pH值的变化对TBF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而不同的影响。
Inclusion complex of benzoylferrocene-thiosemicarbazone （TBF） with β-cyclodextrin （β-CD） was prepared by using kneading method. Continuous variation plot proved that 2 ： 3（TBF ：β-CD） inclusion complex has been formed. The characterizations of the inclusion complex were studied by UV, FTIR and X-ray diffractometry. By using the data of UV spectroscopy, the binding constant of the inclusion compound was estimated to be 5.04 × 10^13 （L4 · （mol）^-4 ）, and its change in absorption with time was studied. The stability of inclusion is obviously greater than the vip molecule. Furthermore, the influences of different solvents and pH on the UV spectra of TBF and β-CD-TBF were discussed respectively. The results show that different micro-environments have apparently different effects on electric spectra of vip and inclusion complexes.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2006年第3期517-521,共5页
Spectroscopy and Spectral Analysis
基金
教育部重点研究计划(2003-02162)
宁夏自然科学基金(2002-B003
Z001-2004)资助课题
