环糊精二聚体与金刚烷修饰聚丙烯酰胺的主客体相互作用

Supramolecular System Obtained by Cyclodextrin Dimers with Adamantyl Modified Polyacrylamide

摘要:

合成了环糊精二聚体（trans-Azo ?-CD Dimer）及侧链含金刚烷（Ad）的聚丙烯酰胺（PAM-Ad），利用trans-Azo ?-CD Dimer与PAM-Ad侧链的Ad基团的主客体识别作用构筑了一类超分子体系。2D NMR测定结果表明trans-Azo ?-CD Dimer和PAM-Ad的主客体相互作用是通过?-CD空腔和疏水体Ad形成包结络合物进行的。环糊精二聚体trans-Azo ?-CD Dimer和聚合物PAM-Ad两者之间的缔合程度受trans-Azo ?-CD Dimer和PAM-Ad的浓度、温度、盐浓度以及trans-Azo ?-CD Dimer光异构的影响。

Abstract:

The cyclodextrin dimer (trans-Azo ?-CD Dimer) and the adamantyl modified polyacrylamide (PAM-Ad) were synthesized. A supramolecular system was constructed by the formation of inclusion complex between trans-Azo ?-CD Dimer and PAM-Ad. The results of 2D NMR measurement indicated that the host-guest interaction between trans-Azo ?-CD Dimer and PAM-Ad was carried out through the formation of inclusion complexes between ?-CD cavity and the hydrophobe Ad. The interaction between trans-Azo ?-CD Dimer and PAM-Ad was depended on the concentration of trans-Azo ?-CD Dimer,PAM-Ad and the photoisomerization of trans-Azo ?-CD Dimer. The influences of salt concentration and temperature on the viscosity of mixture solution were also studied.