a 北京工商大学理学院化学系 北京 100048;
b 中国农业大学理学院应用化学系 北京 100193
Supramolecular Hydrogels Obtained by Host-Guest Interactions of Cyclodextrin Dimers with Adamantyl-Containing LCST Copolymers
Li Shujinga, Zhang Xiaojunb, Liang Haiyana, Wang Xinruia
a Department of Chemistry, School of Science, Beijing Technology and Business University, Beijing 100048;
b Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193
Abstract：Supramolecular hydrogels were constructed by the formation of inclusion complexes between trans-Stilbene β-CD Dimer and adamantyl modified poly(N-isopropylacrylamide) (Pnipam-Ad). The results of 2D NMR measurement indicated that the host-guest interaction between trans-Stilbene β-CD Dimer and Pnipam-Ad was carried out through the formation of inclusion complexes between β-CD cavity and the hydrophobe Ad. The interaction between trans-Stilbene β-CD Dimer and Pnipam-Ad was depended on the concentration of trans-Stilbene β-CD Dimer, Pnipam-Ad and the photoisomerization of trans-Stilbene β-CD Dimer. In addition, the lower critical solution temperature (LCST) of the supramolecular networks consisting of trans-Stilbene β-CD Dimer and Pnipam-Ad are significantly lower than those of pure Pnipam.