Electrochemical preparation and in situ characterization of poly(3-methylpyrrole) and poly(3-methylpyrrole-cyclodextrin) films on gold electrodes

• Authors: Jalal Arjomandi , Rudolf Holze
• Languages of publication: EN

Abstracts

EN

A Electrosynthesis of conducting poly(3-methylpyrrole) (P3MPy) and poly(3-methylpyrrole-2,6-dimethyl-β-cyclodextrin) (poly(3MPy-β-DMCD)) films on a gold electrode in acetonitrile electrolyte solution containing lithium perchlorate has been carried out by potential cycling. Products were characterized with cyclic voltammetry CV, in situ UV-Vis spectroscopy, and in situ resistance measurements. Electrosynthesis of poly(3MPy-β-DMCD) started with a (1:1) (3MPy-β-DMCD) supramolecular cyclodextrin CD complex of 3-methylpyrrole characterized with proton NMR spectroscopy. The oxidation peak of poly(3MPy-β-DMCD) in CVs is shifted to more positive values than P3MPy. In situ resistance measurements show that the resistance of poly(3MPy-β-DMCD) is higher than of P3MPy by approximately an order of magnitude. Minimum resistance can be observed for P3MPy and poly(3MPy-β-DMCD) at 0.40 E Ag/AgClE Ag/AgClIn situ UV-Vis spectroelectrochemical data for both films prepared potentiodynamically by cycling the potential in the range −0.20 E Ag/AgCl [...]

Keywords

EN

β-dimethyl cyclodextrin; Polypyrrole; Poly(3-methylpyrrole); Conducting polymer; Electropolymerization

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2008
• Volume: 6
• Issue: 2
• Pages: 199-207

Dates

published

1 - 6 - 2008

online

17 - 4 - 2008

Contributors

author

Jalal Arjomandi

• Institut für Chemie, AG Elektrochemie, Technische Universität Chemnitz, 09107, Chemnitz, Germany

author

Rudolf Holze

• Institut für Chemie, AG Elektrochemie, Technische Universität Chemnitz, 09107, Chemnitz, Germany

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Identifiers

DOI

10.2478/s11532-008-0020-9