Electrocatalytic voltammetric determination of guanine at a cobalt phthalocyanine modified carbon nanotubes paste electrode

Balan, Ionela; David, Iulia Gabriela; David, Vasile; Stoica, Anca‐Iulia; Mihailciuc, Constantin; Stamatin, I.; Ciucu, Anton Alexandru

doi:10.1016/j.jelechem.2011.02.002

Cited by 47 publications

(16 citation statements)

References 38 publications

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“…The advantages of both single-wall (SW) and multiwall (MW) CNTs, such as high surface area, good conductance, favorable electronic properties and electrocatalytic effect make them adequate for the construction of electrochemical sensors and biosensors [4]. The incorporation of electroactive materials into a carbon nanotubes paste electrode is advantageous and has been widely applied in the electroanalytical community [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Application of a Carbon‐Paste Electrode Modified with 2,7‐Bis(ferrocenyl ethyl)fluoren‐9‐one and Carbon Nanotubes for Voltammetric Determination of Levodopa in the Presence of Uric Acid and Folic Acid

2011

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A carbon-paste electrode modified with 2,7-bis(ferrocenyl ethyl)fluoren-9-one and carbon nanotubes was used for the sensitive voltammetric determination of levodopa (LD). The electrochemical response characteristics of the modified electrode toward LD, uric acid (UA) and folic acid (FA) were investigated. The results showed an efficient catalytic activity of the electrode for the electrooxidation of LD, which leads to lowering its overpotential by more than 320 mV. The modified electrode exhibits an efficient electron mediating behavior together with well-separated oxidation peaks for LD, UA and FA. Also, the modified electrode was used for determination of LD in some real samples.

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Section: Introductionmentioning

confidence: 99%

Application of a Carbon‐Paste Electrode Modified with 2,7‐Bis(ferrocenyl ethyl)fluoren‐9‐one and Carbon Nanotubes for Voltammetric Determination of Levodopa in the Presence of Uric Acid and Folic Acid

2011

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“…15% [86]. We develop a novel assay for the electrochemical detection of guanine based on carbon nanotubes paste electrodes (CNTPEs) modified with cobalt phthalocyanine (CoPc) [87]. The results indicated that the modification of a CNTPE with this compound results in amplification of the guanine oxidation response in contrast to that on the unmodified CNTPE.…”

Section: Dnamentioning

confidence: 99%

Chemically Modified Electrodes in Biosensing

Ciucu¹

2014

J Biosens Bioelectron

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The development of chemical sensors has received a great deal of scientific interest in the last decades. Not only the chemical industry may benefit from these sensors but also the food industry, bio-industry, medicine, environmental control because of their capability to give continuously and reversibly a selective and fast response to the presence of a specific compound in a complex mixture of components, without perturbing the system. Biosensors combine the power of analytical detection techniques with the specificity of biological recognition system and therefore they are the most promising devices today about this selectivity. Furthermore, biosensors possess many unique features such as compact size, simplicity of use, one-step reagentless analysis, absence of radioactivity, etc., that make them very attractive alternatives to conventional bioanalytical techniques. The present short review highlights some modern aspects of Chemically Modified Electrodes (CMEs) based on redox enzymes used in amperometric biosensing, a detection method which has already found a large number of applications in health care, food industry and environmental analysis. Some relevant applications of amperometric biosensors based on CMEs to real sample analysis are also presented and some possible future trends highlighted.

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“…CNTs have been used as electrochemical platforms for several applications such as for microbiological [18][19][20][21][22]25], toxins [59,60], pesticides [31,[38][39][40][41][42][43][44][45][46][47][48][49][50][51][52] and explosives [64][65][66] detections.…”

Section: Carbon Nanotubesmentioning

confidence: 99%

Nanomaterials Based Electrochemical Sensing Applications for Safety and Security

Marín¹,

Merkoçi

2012

Electroanalysis

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Nanomaterials based sensing systems provide a new class of rapid and low cost detection alternatives with interest in the field of safety and security applications. In this review we report the recent trends in the use of various nanomaterials such as nanoparticles, carbon nanotubes, nanowires and graphene to detect different safety and security related analytes (i.e. microorganisms, toxins, pesticides and explosives). Nanomaterials are used either as modifiers of the electrochemical transducers or as labels with the objective to enhance the electrochemical signal, improve the stability and in general the performance of the detection systems including their cost-efficiency. Most of the developed systems are shown to bring excellent improvements while being used in the laboratory. Their application in real sample and during in-field monitoring still needs a long way while issues such as the reproducibility, stability, mass production capability of the designed devices etc. shouldnt still yet be resolved.

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Electrocatalytic voltammetric determination of guanine at a cobalt phthalocyanine modified carbon nanotubes paste electrode

Cited by 47 publications

References 38 publications

Application of a Carbon‐Paste Electrode Modified with 2,7‐Bis(ferrocenyl ethyl)fluoren‐9‐one and Carbon Nanotubes for Voltammetric Determination of Levodopa in the Presence of Uric Acid and Folic Acid

Application of a Carbon‐Paste Electrode Modified with 2,7‐Bis(ferrocenyl ethyl)fluoren‐9‐one and Carbon Nanotubes for Voltammetric Determination of Levodopa in the Presence of Uric Acid and Folic Acid

Chemically Modified Electrodes in Biosensing

Nanomaterials Based Electrochemical Sensing Applications for Safety and Security

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