Quinone-Based Polymers for Label-Free and Reagentless Electrochemical Immunosensors: Application to Proteins, Antibodies and Pesticides Detection

• Main Authors: Minh-Chau Pham, Huynh-Thien Duc, Guillaume Anquetin, Steeve Reisberg, Benoit Piro
• Format: Article
• Language: English
• Published: MDPI AG 2013-01-01
• Series: Biosensors
• Subjects: conducting polymer; square wave voltammetry; impedance spectroscopy; immunosensor; proteins; peptides; pollutants; electrochemical biosensor; label-free detection
• Online Access: http://www.mdpi.com/2079-6374/3/1/58

Polyquinone derivatives are widely recognized in the literature for their remarkable properties, their biocompatibility, simple synthesis, and easy bio-functionalization. We have shown that polyquinones present very stable electroactivity in neutral aqueous medium within the cathodic potential domain avoiding side oxidation of interfering species. Besides, they can act as immobilized redox transducers for probing biomolecular interactions in sensors. Our group has been working on devices based on such modified electrodes with a view to applications for proteins, antibodies and organic pollutants using a reagentless label-free electrochemical immunosensor format. Herein, these developments are briefly reviewed and put into perspective.