| 초록 |
In chemical sensors, visually perceptible motion change is one of the challenging tools for monitoring sensing responses. To achieve the change on recognition sites in chemical sensors, stimuli-responsive hydrogel systems are required to control physical swelling/deswelling behavior in freestanding films. In this regard, we here fabricate molecularly imprinted polymer (MIP) hydrogel films and evaluate their volume change with respect to sorbitol recognition. To design the MIP hydrogel freestanding films, vinylphenylboronic acid (VPBA), acrylic acid (AA) and N,N’-methylenebis(acrylamide) (MBAA) are used as functional monomer, co-monomer and cross-linker. As template molecule sorbitol, one of the sugar alcohols, is used to make VPBA-sorbitol complex maintaining a high affinity with boronic acid groups. Using such the hydrogel films, we analyze the difference between swelling/deswelling transition by sorbitol recognition on the binding sites. |
