Temperature-Sensitive Macroscopic Assembly Based on Molecular Recognition

Abstract

The interaction of polyacrylamide­(pAAm)-based gel modified with benzyl (Bz) moiety (Bz­(<i>x</i>)-gel, where <i>x</i> denotes the mol % content of Bz moiety) with a pAAm-based gel possessing cyclodextrin (CD) moieties (αCD-gel, βCD-gel, and γCD-gel) was investigated at various temperatures to elucidate the effect of temperature on the formation of macroscopic assembly. The interaction of Bz­(<i>x</i>)-gel with CD-gels was stronger at a lower temperature, consistent with the binding constants for the model system of pAAm modified with 1 mol % Bz moiety and native CDs. Bz(15)-gel interacted only with βCD-gel at a higher temperature