| 초록 |
We describe a MIP-based fluorescent sensor fabricated through an organogelation process. The sensor was comprised of a molecularly imprinted organogel nanofiber as a receptor and a CdSe/ZnS QD as a signal transducer. We chose histamine as a model template. As a functional monomer for complexation with the template, an acrylate having a carboxyl group was used. The QD and template-containing organogel formed in n-decane was polymerized in the presence of a photoinitiator and a cross-linker by UV irradiatiation to produce highly cross-linked organogel nanofibers. The template molecules were removed to give the QD-incorporated, histamine imprinted organogel nanofibers (QD-HIOGNF). QD-HIOGNF showed high molecular recognition properties toward histamine in terms of both sensitivity and selectivity. The fluorescence intensity of QD-HIOGNF was quenched sensitively as the concentration of histamine increased. QD-HIOGNF could be reused for sensing after removing the bound analytes. |
