ELECTROCHEMICAL SYNTHESIS OF POLYANILINE AT A NOVEL ‘SELF-DOPED’ POLYANILINE MODIFIED ELECTRODE

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HAJIZADEH S.; MASDAROLOMOOR F.; ARAB CHAMJANGALI M.

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Seminar Paper

Paper Information

Seminar: IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR
Year:2012 | Issue:10

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Title

ELECTROCHEMICAL SYNTHESIS OF POLYANILINE AT A NOVEL ‘SELF-DOPED’ POLYANILINE MODIFIED ELECTRODE

Author(s)

HAJIZADEH S. | MASDAROLOMOOR F. | ARAB CHAMJANGALI M.

Keywords

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Abstract

A NEW APPROACH IS DESCRIBED FOR SYNTHESIS OF POLY ANILINE (PAN) ON POLYELECRTROLYTE MODIFIED ELECTRODE. THE ELECTRODE WAS MODIFIED BY WATER SOLUBLE CONDUCTING POLYMER, POLY (2-METHOXY ANILINE -5- SULFONIC ACID) (PMAS). IN ORDER TO FORM A STABLE FILM OF PMAS DIFFERENT SOLVENTS WERE EXAMINED. THE FILMS CASTED FROM PMAS SOLUTIONS IN DMSO WERE FOUND TO BE STABLE IN POLYMERIZATION SOLUTION OF ANILINE. WITH CONCENTRATION FROM DMSO WAS USED AS SOLVENT RATHER THAN WATER. MODIFIED ELECTRODE WAS PREPARED BY DIRECT DROP CASTING OF A MICROLITER OF A PMAS SOLUTION (0.1-5%, W/V) ON GLASSY CARBON ELECTRODE. ELECTROCHEMICAL EXPERIMENTS SHOWED THAT EVEN AT VERY LOW CONCENTRATIONS OF ANILINE (7.5 MM), A DRAMATIC INCREASE WITH SUBSEQUENT SCANS WAS OBSERVED AND AN ADHERENT, UNIFORM AND STABLE POLYANILINE FILM WAS DEPOSITED ON ELECTRODE SURFACE.THE ELECTRODEPOSITION OF THE POLYANILINE MATERIAL IS ENHANCED BY THE PRESENCE OF THE ELECTRICALLY CONDUCTING PMAS POLYELECTROLYTE DOPANT, WHICH FUNCTIONS AS A MOLECULAR TEMPLATE PROVIDING SUPRAMOLECULAR PRE-ORDERING AS WELL AS SIMULTANEOUSLY FACILITATING CHARGE TRANSPORT DURING ELECTRODEPOSITION. INCREASING THE CONCENTRATION OF PMAS INCREASED THE DEGREE OF POLYMERIZATION, ALTHOUGH THE FILMS CASTED FROM PMAS SOLUTIONS WITH CONENTRATIONS MORE THAN 2.5 % (W/V) WERE NOT STABLE. POST SYNTHESIS CYCLIC VOLTAMOGRAMS OF POLYANILINE SHOWED CHARACTERISTIC REDOX PAIRS OF ELECTROACTIVE POLYANLINE. THE POLYMER WAS ELECTROACTIVE IN A WIDER PH RANGE, SUITABLE FOR APPLICATIONS WHERE ELECTROACTIVITY IS NEEDED AT NEUTRAL PH. DUE TO THE PRESENCE OF NEGATIVELY CHARGED SULFONATE GROUPS IN THEIR STRUCTURE, THESE MATERIALS ARE CAPABLE OF ELECTROSTATIC INTERACTION WITH POSITIVELY CHARGED GROUPS. THE METHOD HAS THE ADVANTAGE OF MINIMIZING THE AMOUNT OF PMAS AND MONOMER FOR DEPOSITION OF A DESIRABLE CONDUCTING POLYMER FILM.

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APA: Copy

HAJIZADEH, S., MASDAROLOMOOR, F., & ARAB CHAMJANGALI, M.. (2012). ELECTROCHEMICAL SYNTHESIS OF POLYANILINE AT A NOVEL ‘SELF-DOPED’ POLYANILINE MODIFIED ELECTRODE. IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR. SID. https://sid.ir/paper/909950/en

Vancouver: Copy

HAJIZADEH S., MASDAROLOMOOR F., ARAB CHAMJANGALI M.. ELECTROCHEMICAL SYNTHESIS OF POLYANILINE AT A NOVEL ‘SELF-DOPED’ POLYANILINE MODIFIED ELECTRODE. 2012. Available from: https://sid.ir/paper/909950/en

IEEE: Copy

S. HAJIZADEH, F. MASDAROLOMOOR, and M. ARAB CHAMJANGALI, “ELECTROCHEMICAL SYNTHESIS OF POLYANILINE AT A NOVEL ‘SELF-DOPED’ POLYANILINE MODIFIED ELECTRODE,” presented at the IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR. 2012, [Online]. Available: https://sid.ir/paper/909950/en

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