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Reference type: Conference Proceeding
Authors: Najafi M, Khoshhesab ZM, Mahboobnia B
Publication date: 2012
Article title: Surface Imprinted Polyurethane Film Contaning Nano-Pore for Detection of Ascorbic Acid.
Page numbers: 956-958
Alternative URL: http://icns4.nanosharif.ir/proceedings/files/proceedings/APP127.pdf

Conference information: Proceedings of the 4th International Conference on Nanostructures (ICNS4)

Abstract: Molecularly imprinted polymers (MIPs) are synthetic polymers containing imprinted nanocavities, which are able to specifically rebind their target. The surface of polystyrene (PS) was modified by coating an imprinted thin layer of polyaniline (PANI) by oxidizing aniline using ammonium persulfate. Ascorbic acid (AA) used as a template (target molecules). Affinity sites for (AA) were created in the coated layer by non-covalent imprinting method. The scanning electron microscopy (SEM) and the atomic force microscopy (AFM) were used for the surface studies of the non imprinted polymer (NIP) and the imprinted polymer. The adsorbed AA was detected using the technique of Fourier transform attenuated total internal reflection infrared spectroscopy (FT-ATR-IR). The imprinted layer adsorbed AA ten times more compared to the nonimprinted surface reflecting the creation of affinity sites specific to AA on the surface. The results show that molecularly imprinted surface in combination with FT-IR is a useful approach for the sensing applications.
Template and target information: ascorbic acid, vitamin C
Author keywords: Surface molecular imprinted polymer, PANI, ATR-FT-IR, ascorbic acid


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