Investigation of the electrochemical behavior of metallo-tetraazaporphyrin modified silver and pyrolytic graphite electrodes in aqueous nitrite solution

Prasad, R.; Kumar, Ajay

doi:10.1016/j.jelechem.2004.11.004

Cited by 15 publications

(2 citation statements)

References 58 publications

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“…Although some reported ionic liquid-modified electrodes exhibit lower LODs [20,22,26], it should be noted that their preparation procedure and required materials are significantly more complex compared to the sensor preparation protocol proposed herein. In terms of silver or silver-modified electrodes, the one demonstrated in this work is at least comparable [25], if not significantly better compared to those found in the literature [23,24,27,39,40] considering the linear concentration range and/or LOD.…”

Section: Resultssupporting

confidence: 62%

Silver particle-decorated carbon paste electrode based on ionic liquid for improved determination of nitrite

Menart

Jovanovski

Hočevar

2015

Electrochemistry Communications

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Section: Resultssupporting

confidence: 62%

Silver particle-decorated carbon paste electrode based on ionic liquid for improved determination of nitrite

Menart

Jovanovski

Hočevar

2015

Electrochemistry Communications

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“…Over the past few years we have been engaged in synthesis and study of metallo-tetraazaporphyrin/ polypyridylruthenium(II) linked molecular arrays [13][14][15][16]. We have also fabricated metallo-tetraazaporphyrin based potentiometric sensors for a few cations and anions [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Stepwise synthesis of peripherally dimetallated metallo-tetraazaporphyrins with linear and bent motifs

Kumar

Prasad

2007

Transition Met Chem

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Two new dinuclear and two new trinuclear complexes of 2, 3,7,8,12,13,17,18-octakis(methylthio)tetraazaporphyrinatomagnesium(II), [Mg(OMTTAP)] were synthesized using a convenient stepwise process. These complexes possess (bpy) 2 Ru II and Cp(PPh 3 )Ru II metal moieties directly attached to the b-positions in the [Mg(OMTTAP)] through thioether chelation. Complexes were characterized using 1 H-n.m.r., u.v.-vis and mass spectroscopic data. The peripheral binding of the two Ru II units significantly influenced redox potentials of the OMTTAP core by lowering E 1/2 for the OMTTAP centered oxidation and reduction processes, both, as evident from their cyclic voltammograms. The stepwise synthesis reported here demonstrates success of a convenient strategy to obtain hybrid, trimetallic, redox active chromophores with linear and bent motifs.

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Electrochemical Studies of an Iron Porphyrin Immobilized on Nb₂O₅/SiO₂ and Its Application for Simultaneous Determination of Dopamine and Ascorbic Acid Using Multivariate Calibration Methodology

et al. 2007

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This paper shows an application of a first generation porphyrin, FeTPPCl 5,10,25,20-tetraphenylporphyrin iron(III) chloride (FeTPPCl or FeTPP þ ) immobilized on a inorganic matrix, SiO 2 /Nb 2 O 5 (niobium oxide grafted on silica gel surface, designated as SiNb) to the preparation of a carbon paste electrode (CPE). The carbon paste modified with a FeTPP þ immobilized on SiO 2 /Nb 2 O 5 (SiNb), designated as CPE/SiNb/FeTPP, was applied for simultaneous electrochemical determination of dopamine (DA) and ascorbic acid (AA). Because of the overlapping of the voltammetric peaks of DA and AA, the multivariate calibration methodology based on partial least square regression (PLSR) was proposed. The data pre-treatment used in this process was mean centering and to choose the principal components number a cross validation procedure was used (leave-one-out). Five principal components were necessary to obtain the lowest PRESS (prediction residual error sum of squares). The statistics showed that this model explains approximately 95.2% of the variance from the data set. Using this model, high correlation between actual and predicted concentrations was observed, mainly for higher dopamine (maximum relative error of 8%) and ascorbic acid (maximum relative error of 10%) concentrations. For low analytes concentrations the relative error increases to 35% for AA. Considering the similarity of the voltammetric response of the analytes, the results obtained were satisfactory and showed the promissory capability of the CPE/SiNb/FeTPP coupled multivariate calibration methods for simultaneous voltammetric analysis of DA and AA.

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Investigation of the electrochemical behavior of metallo-tetraazaporphyrin modified silver and pyrolytic graphite electrodes in aqueous nitrite solution

Cited by 15 publications

References 58 publications

Silver particle-decorated carbon paste electrode based on ionic liquid for improved determination of nitrite

Silver particle-decorated carbon paste electrode based on ionic liquid for improved determination of nitrite

Stepwise synthesis of peripherally dimetallated metallo-tetraazaporphyrins with linear and bent motifs

Electrochemical Studies of an Iron Porphyrin Immobilized on Nb₂O₅/SiO₂ and Its Application for Simultaneous Determination of Dopamine and Ascorbic Acid Using Multivariate Calibration Methodology

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Investigation of the electrochemical behavior of metallo-tetraazaporphyrin modified silver and pyrolytic graphite electrodes in aqueous nitrite solution

Cited by 15 publications

References 58 publications

Silver particle-decorated carbon paste electrode based on ionic liquid for improved determination of nitrite

Silver particle-decorated carbon paste electrode based on ionic liquid for improved determination of nitrite

Stepwise synthesis of peripherally dimetallated metallo-tetraazaporphyrins with linear and bent motifs

Electrochemical Studies of an Iron Porphyrin Immobilized on Nb2O5/SiO2 and Its Application for Simultaneous Determination of Dopamine and Ascorbic Acid Using Multivariate Calibration Methodology

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Electrochemical Studies of an Iron Porphyrin Immobilized on Nb₂O₅/SiO₂ and Its Application for Simultaneous Determination of Dopamine and Ascorbic Acid Using Multivariate Calibration Methodology