Development of a Molecularly Imprinted Polymer for Uric Acid Sensing Based on a Conductive Azopolymer: Unusual Approaches Using Electrochemical Impedance/Capacitance Spectroscopy Without a Soluble Redox Probe

2021 ◽  
pp. 130141
Author(s):  
Heitor Furlan Trevizan ◽  
André Olean-Oliveira ◽  
Celso Xavier Cardoso ◽  
Marcos F.S. Teixeira
Keyword(s):  
Uric Acid ◽  
Molecularly Imprinted Polymer ◽  
Electrochemical Impedance ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Redox Probe ◽  
Capacitance Spectroscopy

scholarly journals Self-Reporting Molecularly Imprinted Polymer with Covalently Immobilized Ferrocene Redox Probe for Selective Electrochemical Sensing of P-Synephrine

2021 ◽  
Vol MA2021-01 (55) ◽  
pp. 1368-1368
Author(s):  
Patrycja Lach ◽  
Maciej Cieplak ◽  
Krzysztof Noworyta ◽  
Piotr Pieta ◽  
Wojciech Lisowski ◽  
...  
Keyword(s):  
Molecularly Imprinted Polymer ◽  
Electrochemical Sensing ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Redox Probe

scholarly journals Electrochemical Sensor Based on Molecularly Imprinted Polymer for the Detection of Cefalexin

Biosensors ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 31 ◽  
Author(s):  
Bogdan Feier ◽  
Adrian Blidar ◽  
Alexandra Pusta ◽  
Paula Carciuc ◽  
Cecilia Cristea
Keyword(s):  
Electrochemical Sensor ◽  
Molecularly Imprinted Polymer ◽  
Electrochemical Impedance ◽  
Limit Of Detection ◽  
Imprinted Polymer ◽  
Boron Doped Diamond ◽  
Molecularly Imprinted ◽  
Diamond Electrode ◽  
The Difference ◽  
Mip Sensor

In this study, a new electrochemical sensor was developed for the detection of cefalexin (CFX), based on the use of a molecularly imprinted polymer (MIP) obtained by electro‒polymerization in an aqueous medium of indole-3-acetic acid (I3AA) on a glassy carbon electrode (GCE) and on boron-doped diamond electrode (BDDE). The two different electrodes were used in order to assess how their structural differences and the difference in the potential applied during electrogeneration of the MIP translate to the performances of the MIP sensor. The quantification of CFX was performed by using the electrochemical signal of a redox probe before and after the rebinding of the template. The modified electrode was characterized using atomic force microscopy (AFM), scanning electron microscopy (SEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The influence of different parameters on the fabrication of the sensor was tested, and the optimized method presented high selectivity and sensitivity. The MIP-based electrode presented a linear response for CFX concentration range of 10 to 1000 nM, and a limit of detection of 3.2 nM and 4.9 nM was obtained for the BDDE and the GCE, respectively. The activity of the sensor was successfully tested in the presence of some other cephalosporins and of other pharmaceutical compounds. The developed method was successfully applied to the detection of cefalexin from real environmental and pharmaceutical samples.

An electrochemical sensor for the determination of phoxim based on a graphene modified electrode and molecularly imprinted polymer

2015 ◽  
Vol 7 (11) ◽  
pp. 4786-4792 ◽  
Author(s):  
Xuecai Tan ◽  
Jiawen Wu ◽  
Qi Hu ◽  
Xiaoyu Li ◽  
Pengfei Li ◽  
...  
Keyword(s):  
Electrochemical Sensor ◽  
Modified Electrode ◽  
Molecularly Imprinted Polymer ◽  
Electrochemical Impedance ◽  
Impedance Spectra ◽  
Imprinted Polymer ◽  
Electrochemical Impedance Spectra ◽  
Molecularly Imprinted

The electrochemical impedance spectra of Fe(CN)63−/4− at NIP/graphene/GCE (a), MIP/GCE (b), the bare GCE (c), and MIP/graphene/GCE (d).

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