Electrochemically sensitive supra-crosslink and its corresponding hydrogel  

作　　者：DU Ping CHEN GuoSong JIANG Ming 

机构地区：[1]State Key Laboratory of Molecular Engineering of Polymers,Department of Macromolecular Science,Fudan University,Shanghai,200433,China

出　　处：《Science China Chemistry》2012年第5期836-843,共8页中国科学（化学英文版）

基　　金：the National Natural Science Foundation of China (20834004 and 20904005);National Basic Research Program of China (973 Project, 2009CB930402 and 2011CB932503) for financial support

摘　　要：In this work, through inclusion complexation between cyclodextrin (CD) host and ferrocene (Fc) guest, a monomer with double bond was incorporated to the surface of CdS quantum dot (QD). The obtained supra-structure could act as a supra-crosslink (Fc-SCL) in its copolymerizing with N,N-dimethylacrylamide (DMA) leading to a hybrid supramolecular hydrogel (Fc-Gel). Fc-SCL inherited satisfactory electrochemical activity from Fc. When the weight percentage of Fc-SCL in Fc-Gel was increased, an apparent increase of elastic modulus (G ′) was observed. Furthermore, Fc-Gel also exhibited good fluorescent properties. It was also demonstrated that the inclusion complexation of CD and Fc played a crucial role in constructing the hydrogel; therefore, this Fc-Gel was an organic-inorganic hybrid hydrogel induced by supramolecular interaction.In this work, through inclusion complexation between cyclodextrin （CD） host and ferrocene （Fc） guest, a monomer with double bond was incorporated to the surface of CdS quantum dot （QD）. The obtained supra-structure could act as a supra-crosslink （Fc-SCL） in its copolymerizing with N,N-dimethylacrylamide （DMA） leading to a hybrid supramolecular hydrogel （Fc-Gel）. Fc-SCL inherited satisfactory electrochemical activity from Fc. When the weight percentage of Fc-SCL in Fc-Gel was increased, an apparent increase of elastic modulus （G ′） was observed. Furthermore, Fc-Gel also exhibited good fluorescent properties. It was also demonstrated that the inclusion complexation of CD and Fc played a crucial role in constructing the hydrogel; therefore, this Fc-Gel was an organic-inorganic hybrid hydrogel induced by supramolecular interaction.

关 键 词：supramolecular hydrogel electrochemical activity supra-crosslink inclusion complexation CYCLODEXTRIN 

分 类 号：O648.17[理学—物理化学] TM911.14[理学—化学]