Electrochemical synthesis of intrinsically conducting polymers of 3-alkylpyrroles

Costantini, Nicola; Cagnolati, R.; Nucci, Lamberto; Pergola, Francesco; Ruggeri, Giacomo

doi:10.1016/s0379-6779(98)80103-3

Cited by 14 publications

(8 citation statements)

References 40 publications

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“…Wegner et al reported conductivities of poly (3-alkylpyrroles) and their temperature dependence [13]. The influence of chain length, dopant anion and solvent on the electrochemical treatments of electropolymerization of 3-substituded pyrrole has been studied by Costantini et al [14]. The results of the conductivity measurement of poly(3-alkylpyrrole) polymers show a decrease of conductivity as the alkyl chain becomes longer and a shift to negative potentials of the redox processes depending on the basic character of the solvent.…”

Section: Introductionmentioning

confidence: 99%

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

Arjomandi

Holze

2008

Open Chemistry

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Electrochemical preparation and in situ characterization of poly(3-methylpyrrole) and poly(3-methylpyrrole-cyclodextrin) films on gold electrodes Abstract: A Electrosynthesis of conducting poly(3-methylpyrrole) (P3MPy) and poly(3-methylpyr role-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/AgCl < 1.10 V and 0.60 < E Ag/AgCl < 1.10 V, respectively. The higher resistance of P3MPy compared with polypyrrole may result from the presence of the methyl group substituent resulting in a decreased conjugation length. When CD is present during synthesis, resistance is even higher. In situ UV-Vis spectroelectrochemical data for both films prepared potentiodynamically by cycling the potential in the range -0.20 < E Ag/AgCl < 1.10 V in acetonitrile electrolyte show major effects of CD presence during electrosynthesis.© Versita Warsaw and Springer-Verlag Berlin Heidelberg.

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Section: Introductionmentioning

confidence: 99%

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

Arjomandi

Holze

2008

Open Chemistry

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“…The voltammetric behavior was found to be strongly cycling time-dependent and rather complex when compared with standard cyclic voltammetric data mentioned in the polypyrrole literature [12] and this degree of complexity makes a reliable assignment of oxidation and reduction waves difficult [7].…”

Section: Pfmentioning

confidence: 91%

“…The previous mentioned work [7] dealt with the electrochemical synthetic approach and shed some light on some synthesis parameters±properties relationships. The present work is intended to reach a deeper insight into the chemicophysical properties of the synthesized intrinsically conducting polymers (ICPs) in order to get a better understanding of the electrochemical synthesis parameters±structure±properties relationships of Pyrrole (Py) derivatives.…”

Section: Pfmentioning

confidence: 99%

“…were adopted in the case of the synthesis of P3DP(BF 4 ) in propylene carbonate as described in our previous work [7].…”

Section: Pfmentioning

confidence: 99%

“…Our previous work [7] shows results concerning the systematic change of electropolymerization conditions of 3-alkyl substituted pyrroles were reported: the effects of such changes were detected from the observation of the quality of the obtained films, their d.c. electrical conductivity, their voltammetric behavior and some estimates of their degree of oxidation.…”

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confidence: 99%

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