Square wave voltammetry at disc microelectrodes for characterization of two electron redox processes

2012 ◽  
Vol 14 (23) ◽  
pp. 8319 ◽  
Author(s):  
E. Laborda ◽  
A. Molina ◽  
Q. Li ◽  
C. Batchelor-McAuley ◽  
R. G. Compton
Keyword(s):  
Square Wave Voltammetry ◽  
Redox Processes ◽  
Square Wave ◽  
Wave Voltammetry

Synthesis and characterization of novel conducting homopolymers based on amino β-styryl terthiophene

2008 ◽  
Vol 86 (11) ◽  
pp. 1010-1018 ◽  
Author(s):  
Hakim Mehenni ◽  
Lê H Dao
Keyword(s):  
Cyclic Voltammetry ◽  
Photoelectron Spectroscopy ◽  
Square Wave Voltammetry ◽  
Covalent Bonding ◽  
Modified Glassy Carbon Electrode ◽  
X Ray ◽  
Square Wave ◽  
Wave Voltammetry ◽  
Amine Groups

Novel ECPs (electronic conducting polymers) based on amino β-styryl-substituted terthiophene (AST) were synthetized by direct electropolymerization. The ECPs were characterized by cyclic voltammetry, square-wave voltammetry, Fourier transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The poly(amino β-styryl terthiophene) displayed cyclic and square-wave voltammograms with redox peaks that can be assigned to the aminophenyl moiety and the polyterthiophene backbone. The presence of free primary amine groups on the ECP film permitted further biological functionalization (i.e., covalent bonding of various bioreceptors on its surface). The electrochemical performance of Biotin grafted at the AST modified glassy carbon electrode was investigated to detect the Avidin protein in solution by cyclic voltammetry and square-wave voltammetry.Key words: electronic conducting polymer, electrode surface modification, biosensor, β-styryl-substitued terthiophene, functionalization, cyclic, square-wave voltammetry.

scholarly journals Determination of hydroquinone in a square wave voltammetry procedure using a graphite-polyurethane composite electrode

2006 ◽  
Vol 31 (4) ◽  
pp. 59-62 ◽  
Author(s):  
P. Cervini ◽  
E.T.G. Cavalheiro
Keyword(s):  
Confidence Level ◽  
Square Wave Voltammetry ◽  
Composite Electrode ◽  
Limit Of Detection ◽  
Voltammetric Sensor ◽  
Square Wave ◽  
Polyurethane Composite ◽  
Wave Voltammetry

In order to a better characterization of a graphite-polyurethane composite intended to be used as a voltammetric sensor, the performance in a square wave voltammetric procedure was investigated. Using hydroquinone (HQ) as a probe, the electrode showed to be useful in square wave voltammetry with limit of detection of 0.28 µmol L-1, with recoveries between 99.1 and 101.5%. The results of the proposed method agreed with HPLC ones within 95% confidence level.

Synthesis, electrochemical and spectroelectrochemical studies of octaphenylthio-substituted phthalocyanines

2005 ◽  
Vol 09 (07) ◽  
pp. 484-490 ◽  
Author(s):  
Fungisai Matemadombo ◽  
M. David Maree ◽  
Kenneth I. Ozoemena ◽  
Philippe Westbroek ◽  
Tebello Nyokong
Keyword(s):  
Cyclic Voltammetry ◽  
Square Wave Voltammetry ◽  
Redox Processes ◽  
Tetrabutylammonium Perchlorate ◽  
Square Wave ◽  
Wave Voltammetry

Cobalt (4) and iron (5) phenylthio-substituted phthalocyanines ( MPc ( SR )8) have been synthesized and characterized. Cyclic square wave voltammetry in dimethylformamide containing tetrabutylammonium perchlorate revealed five and six redox processes, respectively, for complexes 4 and 5. The complexes are easier to reduce compared to the corresponding unsubstituted MPc and to butylthio substituted derivatives. The first oxidation and reduction occurs on the metal for both complexes. Spectroelectrochemistry (in dimethylformamide containing tetrabutylammonium perchlorate) was employed to assign the cyclic voltammetry peaks, and gave spectra characteristic of Fe I Pc for reduction of 5 and Co I Pc for the reduction of 4. The spectrum of the former is particularly of importance since such species have not received much attention in the literature.

Study of Redox Processes in Zeolite Y-Associated 2,4,6-Triphenylthiopyrylium Ion by Square Wave Voltammetry

2003 ◽  
Vol 107 (13) ◽  
pp. 3040-3050 ◽  
Author(s):  
Antonio Doménech ◽  
Hermenegildo García ◽  
Mercedes Alvaro ◽  
Esther Carbonell
Keyword(s):  
Square Wave Voltammetry ◽  
Zeolite Y ◽  
Redox Processes ◽  
Square Wave ◽  
Wave Voltammetry

Electrochemical Characterization of Epigallocatechin Gallate Using Square-Wave Voltammetry

2009 ◽  
Vol 21 (9) ◽  
pp. 1019-1025 ◽  
Author(s):  
Ivana Novak ◽  
Marijan Šeruga ◽  
Šebojka Komorsky-Lovrić
Keyword(s):  
Square Wave Voltammetry ◽  
Epigallocatechin Gallate ◽  
Electrochemical Characterization ◽  
Square Wave ◽  
Wave Voltammetry

Characterization of the Electrocatalytic Response of Monolayer-Modified Electrodes with Square-Wave Voltammetry

2012 ◽  
Vol 116 (20) ◽  
pp. 11206-11215 ◽  
Author(s):  
J. Gonzalez ◽  
A. Molina ◽  
F. Martinez Ortiz ◽  
E. Laborda
Keyword(s):  
Square Wave Voltammetry ◽  
Modified Electrodes ◽  
Square Wave ◽  
Wave Voltammetry
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