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Synthesis and retention properties of molecularly imprinted polymers for antibiotics containing a 5-nitrofuran ring†
Edina Rusen,Aurel Diacon,Alexandra Mocanu,Florica Rizea,Bogdan Bucur,Madalina Petruta Bucur,Gabriel-Lucian Radu,Elena Bacalum,Mihaela Cheregi,Victor David
RSC Advances Pub Date : 11/01/2017 00:00:00 , DOI:10.1039/C7RA10196A
Abstract

Novel molecularly imprinted polymers (MIPs) designated for the solid-phase extraction of antibiotics containing a 5-nitrofuran ring (nitrofurantoin and furaltadone) are reported. The synthesis of these MIPs was based on commercial monomers and cross-linking agents capable of forming hydrogen bonds with the template molecules. Thus, the designed MIPs should involve acceptable costs and easier accessibility. Their retention properties were studied by solid-phase extraction (SPE) procedures and the breakthrough curves were evaluated for both imprinted and non-imprinted polymers (NIPs). Due to the presence of adsorption sites created in polymers by imprinting, the MIPs showed a significant difference in the retention property in comparison to NIPs. The MIPs were also immobilized onto a gold electrode surface by entrapment into a silane sol–gel matrix for the development of a sensor based on electrochemical impedance measurements. The good mechanical adherence of the sol–gel matrix on the gold electrode surface was achieved by formation of a self-assembled monolayer using 3-mercaptopropyl trimethoxisilane that acts as an anchoring bridge.

Graphical abstract: Synthesis and retention properties of molecularly imprinted polymers for antibiotics containing a 5-nitrofuran ring
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