Temperature-Sensitive Macroscopic Assembly Based on Molecular Recognition

The interaction of polyacrylamide(pAAm)-based gel modified with beniyl (Bz) moiety (Bi(x)-gel, where x denotes the mol % content of Bz moiety) with a pAAm-based - gel possessing cyclodextrin (CD) moieties (alpha CD-gel, beta CD-gel; and gamma CD-gel). was investigated at various temperatures to elucidate the effect of temperature on the formation of macroscopic assembly. The interaction of Bz(x)-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 beta CD-gel at a higher temperature (