A study of the oxidation and polymerisation of meta substituted phenol and aniline derivatives

Kennedy, Brendan M.; Glidle, Andrew; Cunnane, Vincent J.

doi:10.1016/j.jelechem.2007.05.006

Cited by 37 publications

(14 citation statements)

References 42 publications

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“…However, after a longer electrolysis time, more cation radicals and some oxidation state oligomer gathering near or on the electrodes cause the polymerization reaction on the electrode to proceed more quickly, which is one of the reasons that the polymerization of aniline and its derivatives is autocatalysis reaction, as mentioned by some reports. 30,[37][38][39] These conclusions also were supported by the in situ spectra shown in Figure 1 14 This showed that no sufficient amount of cation radicals was produced because of the lower OT concentration in solution so that POT did not grow, but the lower molecular weight oligomers of OT, such as dimers, trimers, and tetramers, should have been produced. This was in agreement with our study on the electropolymerization of aniline.…”

Section: Resultsmentioning

confidence: 63%

Investigation of the electropolymerization of o‐toluidine and p‐phenylenediamine and their electrocopolymerization by in situ ultraviolet–visible spectroelectrochemistry

Zhang

Liu

et al. 2009

J of Applied Polymer Sci

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Under the conditions of potentiostatic electrolysis, the electropolymerization of o-toluidine (OT) and para-phenylenediamine (PPDA) and the electrocopolymerization between OT and PPDA on an indium tin oxide (ITO) conductive glass electrode at potentials of 0.7, 0.8, and 0.9 V were studied in detail by in situ ultraviolet-visible (UV-vis) spectrometry in 0.5 mol/L sulfuric acid media. It was shown that both OT and PPDA could be electropolymerized on the ITO electrode, which depended on the applied electrolysis potential and the concentration of the monomer. Furthermore, in situ UV-vis spectra indicated that the electrocopolymerization between OT and PPDA could happen. The presence of PPDA not only promoted polymerization but also accelerated polymerization, which was attributed to the formation of an intermediate result from the coupling of PPDA and the toluidine monomer cation radical. PPDA could be incorporated into the copolymer to make the copolymer have a phenazine or phenazine-like cyclic structure, which was proven by the reflectance Fourier transform infrared spectra of the polymer and copolymer. The scanning electron microscopy morphology images of the polymers obtained showed that, in addition to accelerating polymerization, PPDA also could change the method of nucleation for the polymer to make the copolymer possess a fibrous surface morphology. The diameter of the fibroid copolymer was about 100 nm, and the length of that reached about 1000 nm. In the article, a newer concerned mechanism of copolymerization was proposed.

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Section: Resultsmentioning

confidence: 63%

Investigation of the electropolymerization of o‐toluidine and p‐phenylenediamine and their electrocopolymerization by in situ ultraviolet–visible spectroelectrochemistry

Zhang

Liu

et al. 2009

J of Applied Polymer Sci

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“…This indicates that the electrode surface is rapidly passivated and that additional polymer growth upon repeated cycling is limited. It has been shown previously that poly (1,3-dihydroxybenzene) films grown in this manner are less than 10 nm thick [24]. Films of poly (1,3-dihydroxybenzene) grown at a sweep rate of 5 mV s À1 show no faradaic response when tested with a ferri/ferro cyanide solution (see Fig.…”

Section: Resultsmentioning

confidence: 73%

The degradation of pinhole free poly (1,3-dihydroxybenzene) films in sodium hydroxide for the production of microelectrode ensembles

Kennedy

Cunnane

2008

Journal of Electroanalytical Chemistry

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“…The requirement for development of capacitive MIP sensor, is to get a pinhole free thin MIP film covering the substrate electrode with sufficient insulation [12][13][14][15]. To fabricate such a thin and insulated polymer film, polymerization of self-limiting RN polymer was performed on Au Electrode using electropolymerization method [30][31]. Prior to electropolymerization; Au coated Si wafer was cut into small pieces.…”

Section: Preparation Of Mip Sensor and Characterizationmentioning

confidence: 99%

“…The voltammograms of RN electropolymerization in presence and absence of SN on Au Electrode were recorded and presented in Figure 1 [30][31]. This oxidation led to the formation of small chain of oligomers resulting from the reaction between the oxidised RN monomer radicals [30][31]. As the potential increased further, oxidation of oligomers present near the gold surface reacts with the RN radicals and the process of polymerization steps up.…”

Section: Sn Imprinted Rn Electro-polymerizationmentioning

confidence: 99%

Molecularly Imprinted Polyresorcinol Based Capacitive Sensor for Sulphanilamide Detection

Prusty

Bhand

2019

Electroanalysis

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A molecularly imprinted polymer (MIP) based capacitive sensor for antibiotic detection in drinking water and milk has been developed on a gold coated silicon electrode (Au Electrode). The electrode was fabricated by electropolymerizing monomer resorcinol (RN) on Au surface in presence of sulphanilamide (SN) as a template molecule, to get insulated RN polymer antibiotic composite. The insulation of the polymer film was improved by incubation of electrode in 1‐Dodecanethiol solution. Subsequently MIP sensor was obtained by extraction of SN in ethanol and acetic acid solution. Electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) measurements were performed for characterization of the developed MIP electrode at different steps of fabrication. The surface morphology of MIP electrode was characterized using atomic force microscopy (AFM), X‐ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive x‐ray spectroscopy (EDS). Performance of MIP sensor was evaluated by measuring change in capacitance against varying concentration of SN using EIS. A linear response in the range 1 to 200 μg L−1 SN was recorded for MIP sensor with a detection limit of 0.1 μg L−1. The developed MIP sensor exhibited good selectivity towards SN in water and milk with recoveries in the range 92 % to 105 %. The obtained results suggest the usability of MIP based sensor for SN estimation in water and milk samples.

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A study of the oxidation and polymerisation of meta substituted phenol and aniline derivatives

Cited by 37 publications

References 42 publications

Investigation of the electropolymerization of o‐toluidine and p‐phenylenediamine and their electrocopolymerization by in situ ultraviolet–visible spectroelectrochemistry

Investigation of the electropolymerization of o‐toluidine and p‐phenylenediamine and their electrocopolymerization by in situ ultraviolet–visible spectroelectrochemistry

The degradation of pinhole free poly (1,3-dihydroxybenzene) films in sodium hydroxide for the production of microelectrode ensembles

Molecularly Imprinted Polyresorcinol Based Capacitive Sensor for Sulphanilamide Detection

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