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Ežerskis, Z.; Jusys, Z.

doi:10.1023/a:1012280216273

Cited by 77 publications

(37 citation statements)

References 37 publications

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“…In the aqueous system, the oxidation broad peak was observed at a potential of 300 to 500 mV (vs. Ag/AgCl electrode) in the first cycle. However, no peaks were observed when repeating the cycle more than two times; this phenomenon has been observed in the case of many other phenolics Kirk 1993a, 1993b;Ciszewski and Milczarek 2001;Ezerskis and Jusis 2001;Milczarek and Ciszewski 2003;Ferreira et al 2006). During electrooxidation, many phenolic compounds in an aqueous medium undergo rapid film passivation on the electrode surface, leading to a drastic decrease in the current, whereas in an organic solvent medium, the oxidation peaks are observed at ~800 mV after repeating the cycle more than twice.…”

Section: Analysis Of the Solution After Electropolymerizationmentioning

confidence: 79%

Bio-based Polymer from Ferulic Acid by Electropolymerization

et al. 2016

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Electropolymerization was carried out in order to obtain a bio-based polymer by a simple procedure. Ferulic acid, a component of gramineous plants, was selected for this purpose. A thin polymer film was produced in an organic solvent medium (i.e., CH2Cl2/methanol (4:1 v/v) in the presence of 0.2 M LiClO4), whereas it was not obtained in a totally aqueous medium (0.2 M NaOH). Scanning electron microscopic analysis showed that the polymer film had a porous lamellar structure of ~10 μm thickness. Most of the carboxyl groups remained, and IR spectroscopy and time-of-flight secondary ion mass spectrometry (TOF-SIMS) analyses revealed that oquinones existed in the polymer film. After electropolymerization, caffeic acid, sinapic acid, 3,6-bis(4-hydroxy-3-methoxyphenyl)tetrahydrofuro [3,4-c]furan-1,4-dione (1), and 4,4'-dihydroxy-3,3'-dimethoxy-β,β'-bicinnamic acid (2) were detected in the organic reaction medium; this suggested that demethylation, methoxyl group addition, and radical coupling reactions occurred at the electrode surface.

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Section: Analysis Of the Solution After Electropolymerizationmentioning

confidence: 79%

Bio-based Polymer from Ferulic Acid by Electropolymerization

et al. 2016

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“…EPCs are electroactive and can be oxidized at moderate positive potentials at many electrodes making electrochemistry a viable detection method. However, electrochemical detection of this class of analytes as with most phenolic compounds is often plagued by the strong irreversible adsorption of reaction products and intermediates [18][19][20][21][22][23][24][25]. This adsorption causes rapid decrease in electrode response and eventually complete fouling of the electrode [19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Oxidation of Estrogenic Phenolic Compounds at a Nickel‐Modified Glassy Carbon Electrode

et al. 2011

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This paper demonstrates for the first time, successful electrocatalytic oxidation of electroactive estrogenic phenolic compounds (EPCs) at a nickel-modified glassy carbon electrode (Ni-GCE). The electrode was evaluated in terms of electrocatalytic activity, sensitivity, linear dynamic range, limit of detection, and response stability. In comparison to bare glassy carbon electrode, current amplification was observed for EPCs at Ni-GCE, for example, for a 40 mM estrone at Ni-GCE was amplified by a factor of 1224. The Ni-GCE gave good figures of merit with no evidence of electrode fouling. As an example, the limit of detection (S/N = 3) for 17b-estradiol was 100 nM and the response precision (n = 5) was 3.4 %.

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“…Therefore, fast response time and high selectivity could be expected for non-conducting polymer based electrochemical sensors. In most cases, phenol and its derivates are always used for the synthesis of non-conductive films by electrochemical methods [5]. Fig.…”

Section: Non-conducting Films Prepared By Electropolymerization Methodsmentioning

confidence: 99%