Highly sensitive cyclic voltammograms of 4‐aminodiphenylamine obtained by a porous carbon felt electrode and estimation of the hydrolysis rate constant of its quinonediimine state at a neutral pH

Uchiyama, Shunichi; Hasebe, Yasushi; Maeda, Yuji; Yoshida, Yasuhiko

doi:10.1002/elan.1140091104

Cited by 9 publications

(2 citation statements)

References 10 publications

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“…It is considered that the distribution of the electron of aniline-substituted catechol corresponds to that of 4-hydroxydiphenylamine and the redox waves of aniline-substituted catechol may exhibit redox waves at the same potential range of 4-hydroxydiphenylamine ͑+0.05 V͒. 11 The redox potentials of IIa and IIc in Fig. 7 correspond to those of aniline-substituted catechol.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Introduction of Amino Group to a Glassy Carbon Surface by the Electrolysis of Carbamic Acid

Uchiyama

Watanabe

Yamazaki

et al. 2007

J. Electrochem. Soc.

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The electrocatalytic activity of a glassy carbon electrode with regard to the oxidation of ammonium carbamate increased with the electrolysis time because of the electrochemical modification of the electrode surface. From X-ray photoelectron spectroscopy data, it was found that a carbon-nitrogen bond was newly formed due to the electrode oxidation of carbamic acid at +1.0V vs Ag∕AgCl . Redox waves of catechol bound to amino group were observed at +0.05V vs Ag∕AgCl when cyclic voltammetry of catechol was carried out by using a glassy carbon electrode pre-electrolyzed in ammonium carbamate solution. This indicates that catechol can be attached to the electrolyzed surface by the reaction of the amino group bound to the pre-electrolyzed electrode surface and 1,2-benzoquinone formed by electrode oxidation. This result supports the concept that an amino group can be introduced by electrolysis in which ammonium carbamate is used as the electrolyte. The electrochemical introduction of the amino group may have occurred due to the decomposition of carbamaic acid attached to the carbon electrode surface.

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Section: Resultsmentioning

confidence: 99%

Electrochemical Introduction of Amino Group to a Glassy Carbon Surface by the Electrolysis of Carbamic Acid

Uchiyama

Watanabe

Yamazaki

et al. 2007

J. Electrochem. Soc.

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“…The initiation step for the propagation of the polymer is the formation of a cationic intermediate called N-phenylquinonediimine (pqdi) [30] as shown in the mechanistic reaction presented in Scheme 1. This step is followed by a dimerization step of pqdi with the monomer to form the mono-charged radical intermediate responsible for the growth of the polymer.…”

Section: Electrochemical Polymerization Of 4-adpa Using CV Methodsmentioning

confidence: 99%

Fabrication and surface characterization of poly(4-aminodiphenylamine) film modified electrode and its application for lead and cadmium determination

Al-Hinaai

Al-Harthi

Khudaish

2014

SQU Journal for Science

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Poly(4-aminodiphenylamine), Padpa, film was synthesized electrochemically on a glassy carbon electrode by potentiodynamic repetitive cycling of 4-aminodiphenylamine (4-adpa) in 1.0 M HCl. The mechanistic steps involved the oxidation of the protonated monomer to diimine species followed by its dimerization to form the mono-charged radical intermediate, which was considered as the initiation step for the progress of polymerization. The electrochemical properties and surface morphology of the film modified electrode were characterized using electrochemical and various surface scanning techniques. The XPS data demonstrated the existence of =N bonding responsible for polymer formation, while the AFM image revealed a uniform and symmetrical fiber structure with low energy dissipation. The modified electrode was primarily applied as an environmental sensor for the simultaneous and selective determination of Cd 2+

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Formation of Aniline-Bonded Catechols in Aqueous Solution and Their Electrochemical Behavior at a Carbon Felt Electrode

et al. 1998

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The oxidized form of catechol (1,2-benzoquinone) reacts with aniline at neutral pH range and the electroactive 1:1 and 1:2 compounds of catechol and aniline which exhibit separative reversible redox waves are produced and their formal electrode potentials are ¹0.05 V and ¹0.23 V, respectively. The 1:1 compound is considered to be an adduct with pink color and the 1:2 compound is considered to be two anilines substituted catechol from the MS data of molecular weight (290) and 1 H and 13 C NMR data. The 1:2 compound accumulates on the carbon electrode surface due to its affinity to the carbon felt electrode and a detection limit of this compound was found to be 5 × 10 ¹9 M.

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Highly sensitive cyclic voltammograms of 4‐aminodiphenylamine obtained by a porous carbon felt electrode and estimation of the hydrolysis rate constant of its quinonediimine state at a neutral pH

Cited by 9 publications

References 10 publications

Electrochemical Introduction of Amino Group to a Glassy Carbon Surface by the Electrolysis of Carbamic Acid

Electrochemical Introduction of Amino Group to a Glassy Carbon Surface by the Electrolysis of Carbamic Acid

Fabrication and surface characterization of poly(4-aminodiphenylamine) film modified electrode and its application for lead and cadmium determination

Formation of Aniline-Bonded Catechols in Aqueous Solution and Their Electrochemical Behavior at a Carbon Felt Electrode

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