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Reference type: Journal
Authors: Özkütük EB, Diltemiz SE, Özalp E, Say R, Ersös A
Article Title: Ligand exchange based paraoxon imprinted QCM sensor.
Publication date: 2013
Journal: Materials Science and Engineering: C
Volume: 33
Issue: (2)
Page numbers: 938-942.
DOI: 10.1016/j.msec.2012.11.024
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0928493112005425

Abstract: In the present work, a paraoxon imprinted QCM sensor has been developed for the determination of paraoxon based on the modification of paraoxon imprinted film onto a quartz crystal combining the advantages of high selectivity of the piezoelectric microgravimetry using MIP film technique and high sensitivity of QCM detection. The paraoxon selective memories have formed on QCM electrode surface by using a new metal-chelate interaction based on pre-organized monomer and the paraoxon recognition activity of these molecular memories was investigated. Molecular imprinted polymer (MIP) film for the detection of paraoxon was developed and the analytical performance of paraoxon imprinted sensor was studied. The molecular imprinted polymer were characterized by FTIR measurements. Paraoxon imprinted sensor was characterized with AFM and ellipsometer. The study also includes the measurement of binding interaction of paraoxon imprinted quartz crystal microbalance (QCM) sensor, selectivity experiments and analytical performance of QCM electrode. The detection limit and the affinity constant (Kaffinity) were found to be 0.06 μM and 2.25 x 10 4 M-1 for paraoxon [MAAP-Cu(II)-paraoxon] based thin film, respectively. Also, it has been observed that the selectivity of the prepared paraoxon imprinted sensor is high compared to a similar chemical structure which is parathion
Template and target information: paraoxon
Author keywords: MIP, QCM, sensor, paraoxon, pesticide

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