Self-assembled monolayer of nickel(II) complex and thiol on gold electrode for the determination of catechin

Moccelini, Sally Katiuce; Fernandes, Suellen Cadorin; Camargo, Tiago P.; Neves, Ademir; Vieira, Iolanda Cruz

doi:10.1016/j.talanta.2009.01.038

Cited by 37 publications

(16 citation statements)

References 31 publications

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“…Due to high affinity of SH groups to metals, thiol-terminated SAMs have attracted tremendous attention for construction of biomolecular electronic devices. Thiols form SAMs on gold, silver, copper, platinum, palladium, copper, InP and GaAs [7][8][9][10][11][12]. However, thiols on gold make the strongest bond and are known to be very stable.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of epinephrine and uric acid at a gold electrode modified by a 2-(2,3-dihydroxy phenyl)-1, 3-dithiane self-assembled monolayer

Mazloum-Ardakani

Beitollahi

Amini

et al. 2011

Journal of Electroanalytical Chemistry

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Section: Introductionmentioning

confidence: 99%

Simultaneous determination of epinephrine and uric acid at a gold electrode modified by a 2-(2,3-dihydroxy phenyl)-1, 3-dithiane self-assembled monolayer

Mazloum-Ardakani

Beitollahi

Amini

et al. 2011

Journal of Electroanalytical Chemistry

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“…A comparison of the data on the catechin determination obtained in this work and by other techniques used in the literature is given in Table . The results obtained in this work showed that the developed sensor was a superior platform for the sensitive and selective determination of catechin.…”

Section: Resultsmentioning

confidence: 69%

Direct and Fast Electrochemical Determination of Catechin in Tea Extracts using SWCNT‐Subphthalocyanine Hybrid Material

et al. 2019

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In this study, single walled carbon nanotubes (SWCNTs) were covalently functionalized by terminal ethynyl bearing subphthalocyanine (SubPc) to obtain a new hybrid material, viz. SWCNT‐SubPc (CS), via “click” reaction for the first time. The structural characterization and study of the electrochemical sensor properties of the CS hybrid material to catechin were carried out. A convenient and fast analytical method was offered for the determination of catechin. It was shown that the deposition of CS on the surface of a glassy carbon electrode (GCE) led to a 2.2 and 8‐fold increase in the differential pulse voltammetry (DPV) responses to catechin in Britton‐Robinson (BR) buffer solution (a pH of 3) in comparison with SWCNT‐modified and bare GCE, respectively. The dynamic range, detection and quantification limits of catechin were determined to be 0.1–1.5 μM, 13 nM and 43 nM, respectively. Selectivity of the suggested CS/GCE sensor was investigated on addition of a number of interfering metal ions, antioxidants and biomolecules. The applicability of the modified electrode for the detection of catechin in real tea samples such as green, rosehip fruit, Turkish and Indian black tea was demonstrated with the standard addition method. Along with the ease in fabrication and low prices, the proposed CS/GCE sensor was reproducible, selective, stable and sensitive to catechin in major types of tea samples.

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“…Our proposed UHPLC-ECD method provided a good linearity and comparable LODs. The LODs obtained from our proposed method are better than those obtained from previous reports [38][39][40][41][42]. It means that this proposed method can be further useful, sensitive, and rapid for the simultaneous determination of polyphenolic antioxidant in the tea samples.…”

Section: Analytical Performancementioning

confidence: 57%

Ultra-high performance liquid chromatographic determination of antioxidants in teas using inkjet-printed graphene–polyaniline electrode

Bardpho

Rattanarat

Siangproh

et al. 2016

Talanta

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Self-assembled monolayer of nickel(II) complex and thiol on gold electrode for the determination of catechin

Cited by 37 publications

References 31 publications

Simultaneous determination of epinephrine and uric acid at a gold electrode modified by a 2-(2,3-dihydroxy phenyl)-1, 3-dithiane self-assembled monolayer

Simultaneous determination of epinephrine and uric acid at a gold electrode modified by a 2-(2,3-dihydroxy phenyl)-1, 3-dithiane self-assembled monolayer

Direct and Fast Electrochemical Determination of Catechin in Tea Extracts using SWCNT‐Subphthalocyanine Hybrid Material

Ultra-high performance liquid chromatographic determination of antioxidants in teas using inkjet-printed graphene–polyaniline electrode

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