Electrochemical Sensors Based on Conducting Polymer Nanomaterials

الملخص: 

Conducting polymers (CPs) (like polypyrrole, polythiophene, polyaniline, …) have been applied in the design of catalytic sensors as immobilization matrixes, signal transduction systems, and analyte-recognizing components.

 Nanostructured conducting polymers featuring high surface area, small dimensions, and unique physical properties that could be widely used to build various sensor devices.

Different of conducting polymer nanomaterials will be prepared using electrochemical polymerization methods using cyclic voltammetry and differential pulse amperometry that considered as elegant and attractive procedures for the immobilization of the catalysts. These electrochemical deposition techniques offer the possibilities to electrogenerate a polymer film over small electrode surface. The conducting polymer nanomaterials will be functionalized by different metal complexes (like metalloporphyrins).

The modification procedures will carry out by electrochemical polymerization of the related monomers either directly catalyst-modified of the porphyrin monomers or by entrapping the catalytic compounds during the film formation.

The synthesized conducting polymers will be studied and characterized using the electrochemical techniques such as cyclic voltammetry (CV), chronoamperometry (CA), electrochemical impedance spectroscopy (EIS), absorption spectroscopy, and scanning electron microscopy (SEM).

The newly prepared sensor will examine for different environmental application (such as for volatile organic compounds, ammonia, hydrogen sulfide, sarin,…..), and in medical applications (dopamine, ascorbic acid, superoxide, uric acid).