In this study, micropatterned molecularly imprinted polymers (MIPs) for recognition ofa specific molecule (atrazine) were fabricated on substratesusing a micro-contact printing (m-CP) method and photopolymerization. For pattern fabrication, atrazine, methacrylic acid (MAA), and ethylene glycol dimethacrylate (EGDMA) were used as a target molecule, a functional monomer, and a photo-cross-linker, respectively. After placing several droplets of a mixture solution containing all components on the substrate, photopolymerization was performed during a physical contact between the pre-prepared poly(dimethylsiloxane) (PDMS) mold and the substrate. In this process, solvent absorption into the mold and photo-cross-linking simultaneously occurred generating the micropatterned MICP matrix. The change in sensitivity on the MICP films as atrazine detection sensors were measured using quartz crystal microbalance (QCM) compared to planar MICP films. Furthermore, various specific molecules with similar chemical structures (2,4-dichlorophenoxyacetic acid (2,4-D), ametryn, prometryn) were used to identify improved selectivity on the MICP films.

Fabrication of micropatterned molecularly imprinted polymer thin films for detection of atrazine

248th National Meeting (2014)

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