摘要
将β-环糊精的6-OH用二乙烯三胺基取代,得到了6-脱氧-二乙烯三胺基β-环糊精(DTCD),在镧系金属NdCl3的存在下,分别与1,5-萘二胺和1,8-萘二胺反应,得到了2种三元超分子配合物,并用核磁共振氢谱对配合物进行了表征。其中主客体分子的化学计量比为2∶1,客体分子等价氢原子的信号简并现象在包合前后没有发生变化,表明客体分子在主体空腔保持着对称的构象。2种三元超分子配合物均呈"三明治"式夹心结构。
6-OH of β-Cyclodextrin was modified by diethylene triamine,6-deoxy-diethylene triamido-β-Cyclodextrin（DTCD） was prepared,which complexes 1,5-naphthalenediamine and 1,8-naphthalenediamine,respectively,in the presence of lanthanide NdCl3 to synthesize two ternary inclusion complexes（host-guest-metal）.The molecular recognition of DTCD-Nd complex to 1,5-naphthalenediamine and 1,8-naphthalenediamine was investigated via 1H NMR spectroscopy.The stoichiometric proportion of host and guest molecules is 2：1 for the complexes.Signal degeneration still exists for the guest molecules after the inclusion process,revealing the symmetrical conformation of the guest molecules inside the cavities of the two host molecules.Two complexes both exhibit ＂sandwich＂-typed structure.
出处
《大连民族学院学报》
CAS
2012年第1期4-8,23,共6页
Journal of Dalian Nationalities University
基金
中央高校基本科研业务费专项资金资助项目(DC10040106)
关键词
β-环糊精
修饰
分子识别
萘二胺
钕
核磁共振
包合
β - cyclodextrin （ β - CD ）
modification
molecular recognition
naphthalenedia-mine
Neudymium
, NMR
complexation
