A hybrid hydrogel based on clay nanoplatelets and host–guest inclusion complexes

• 作 者: Xiao-Juan Liao Guo-Song Chen
• 机 构: School of Chemistry and Molecular Engineering, East China Normal University,State Key Laboratory of
• 出 处: Chinese Chemical Letters
• 发表日期: 2016年04期
• 关键词: hydrogel inclusion supramolecular guest linker monomer complexes thinning methac

In this work,a monomer with double bond was introduced to the surface of clay nanosheets via inclusion complexation between cyclodextrin(CD)host and azobenzene(Azo)guest,as well as electrostatic interaction between clay nanoplatelets and cations of azobenzene derivatives.The obtained suprastructure acts as a supramolecular cross-linker in its copolymerization with macromonomer PEG resulting in a hybrid supramolecular hydrogel.Only viscous liquid was obtained in the absence of clay nanoplatelets,revealing the supramolecular cross-linker played an important role in the hydrogel formation.Such hybrid supramolecular hydrogel exhibited good stability and shear thinning property.

In this work, a monomer with double bond was introduced to the surface of clay nanosheets via inclusion complex between cyclodextrin (CD) host and azobenzene (Azo) guest, as well as electrostatic interaction between clay nanoplatelets and cations of azobenzene derivatives. acts as a supramolecular cross-linker in its copolymerization with macromonomer PEG resulting in a hybrid supramolecular hydrogel. Once viscous liquid was obtained in the absence of clay nanoplatelets, revealing the supramolecular cross-linker played an important role in the hydrogel formation. hydrogel exhibited good stability and shear thinning property.