Estrone Specific Molecularly Imprinted Polymeric Nanospheres: Synthesis, Characterization and Applications for Electrochemical Sensor Development

Author(s): Gulsah Congur, Hilal Senay, Ceren Turkcan, Ece Canavar, Arzum Erdem, Sinan Akgol.

Journal Name: Combinatorial Chemistry & High Throughput Screening

Volume 16 , Issue 7 , 2013

Abstract:

The aim of this study is (i) to prepare estrone-imprinted nanospheres (nano-EST-MIPs) and (ii) to integrate them into the electrochemical sensor as a recognition layer. N-methacryloyl-(l)-phenylalanine (MAPA) was chosen as the complexing monomer. Firstly, estrone (EST) was complexed with MAPA and the EST-imprinted poly(2-hyroxyethylmethacrylate-co-N-methacryloyl-(l)-phenylalanine) [EST-imprinted poly(HEMA–MAPA)] nanospheres were synthesized by surfactant- free emulsion polymerization method. The specific surface area of the EST-imprinted poly(HEMA–MAPA) nanospheres was found to be 1275 m2/g with a size of 163.2 nm in diameter. According to the elemental analysis results, the nanospheres contained 95.3 mmole MAPA/g nanosphere. The application of EST specific MIP nanospheres for the development of an electrochemical biosensor was introduced for the first time in our study by using electrochemical impedance spectroscopy (EIS) technique. This nano-MIP based sensor presented a great specificity and selectivity for EST.

Keywords: Electrochemical impedance spectroscopy, electrochemical sensor, estrone, HEMA-MAPA, molecularly imprinted polymer.

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Article Details

VOLUME: 16
ISSUE: 7
Year: 2013
Page: [503 - 510]
Pages: 8
DOI: 10.2174/1386207311316070001
Price: $58

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