Electrochemical sensors based on platinum electrodes modified with hybrid inorganic–organic coatings for determination of 4-nitrophenol and dopamine
TL;DR: In this article, new electrochemical sensors for dopamine (DA) and phenol derivative, based on hybrid inorganic redox material-organic conducting polymers, were developed, which exhibited a linear response over wide range of 4-nitrophenol concentrations from 30 to 90μM, with a detection limit of 8.23μM (s/n = 3).
About: This article is published in Electrochimica Acta.The article was published on 2009-02-28. It has received 118 citations till now. The article focuses on the topics: Poly(3,4-ethylenedioxythiophene) & Conductive polymer.
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TL;DR: In this article, a comprehensive review of conducting polymers (CPs) and their composites is presented, followed by their applications, including supercapacitors, batteries, electrochromic devices, solar cells, and biomedical applications.
356 citations
TL;DR: This review highlights recent advances in the development of electrochemical sensors for selective sensing of one of the most important neurotransmitters—dopamine.
Abstract: Since the early 70s electrochemistry has been used as a powerful analytical technique for monitoring electroactive species in living organisms. In particular, after extremely rapid evolution of new micro and nanotechnology it has been established as an invaluable technique ranging from experiments in vivo to measurement of exocytosis during communication between cells under in vitro conditions. This review highlights recent advances in the development of electrochemical sensors for selective sensing of one of the most important neurotransmitters—dopamine. Dopamine is an electroactive catecholamine neurotransmitter, abundant in the mammalian central nervous system, affecting both cognitive and behavioral functions of living organisms. We have not attempted to cover a large time-span nor to be comprehensive in presenting the vast literature devoted to electrochemical dopamine sensing. Instead, we have focused on the last five years, describing recent progress as well as showing some problems and directions for future development.
350 citations
TL;DR: A novel fluorescent sensor based on graphene quantum dots (GQDs) was synthesized for determination of paranitrophenol (4-NP) in water sample, where molecularly imprinted polymer (MIP) was incorporated in GQDs-based sensing system for the first time.
217 citations
TL;DR: It is expected that OECT is a good candidate for low cost and highly sensitive biosensor for the detection of dopamine.
194 citations
TL;DR: In this paper, a glassy carbon electrode was modified with hydroxyapatite nanopowder (HA-NP) and characterized in terms of electrochemical oxidation of 4-nitrophenol (4-NP), via cyclic voltammetry, differential pulse voltammetric, chronoamperometry, and chronocoulumetry.
Abstract: A glassy carbon electrode was modified with hydroxyapatite nanopowder (HA-NP) and characterized in terms of electrochemical oxidation of 4-nitrophenol (4-NP) via cyclic voltammetry, differential pulse voltammetry, chronoamperometry, and chronocoulumetry. The oxidation peak current of 4-NP at the modified electrode was increased (compared to the bare GCE), thus indicating that the HA-NP exhibits a remarkable enhancement effect on the electrochemical oxidation of 4-NP. The effects of loading with HA-NP, pH value, scan rate and accumulation time were examined. The oxidation peak current of 4-NP is proportional to its concentration in the range from 1.0 μM to 300 μM, with a correlation coefficient of 0.9996. The detection limit is 0.6 μM (at an S/N = 3). The method is simple, selective and sensitive. It was successfully applied to the determination of 4-NP in water samples, with recoveries ranging from 96% to 104%.
157 citations
Cites methods from "Electrochemical sensors based on pl..."
...The detection limit (S/N=3) was 0.6 μM, which was lower than those of 17.1 μM at Nafion/ GCE [28], 8.23 μM at Pt/PAZ modified electrode [ 29 ], 1.38 μM at BDD film electrode [30], 1.1 μM at mercury meniscus-modified silver solid amalgam electrode [31] and 0.7 μM at RTIL/CPE [32]....
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TL;DR: In this article, Salaita et al. describe the dynamics of electron transport in polymeric assemblies of redox centers, M. Majda catalysis at redox polymer coated electrodes, C. Andrieux and J. Van Dyke.
Abstract: Adsorbed organic molecules at well-defined electrode surfaces, G. Salaita and A. Hubbard modification of electrode surfaces with self-organized electroactive microstructures, J. Facci dynamics of electron transport in polymeric assemblies of redox centers, M. Majda catalysis at redox polymer coated electrodes, C. Andrieux and J. Saveant electrodes modified with clays, zeolites, and related microporous solids, A. Bard and T. Mallouk electron transfer mediation in metal complex polymer coated electrodes, N. Oyama and T. Ohsaka mass and charge transport in electronically conductive polymers, C. Martin and L. Van Dyke.
504 citations
TL;DR: In this paper, the authors present mesures sur l'utilisation de voltammetrie cyclique and d'une electrode tournante a disque et anneau.
Abstract: On montre que la forme reduite du bleu de Prusse (BP), le blanc de Prusse, presente une activite catalytique pour les reductions d'O 2 et de H 2 O 2 et que la forme oxydee de BP est active pour l'oxydation de H 2 O 2 . Les mesures sont fondees sur l'utilisation de voltammetrie cyclique et d'une electrode tournante a disque et anneau
364 citations
TL;DR: In this article, a review of functional conjugated polymers prepared by electrochemical polymerization is presented, focusing on the thiophene-based polymers and the relationships between the structures of derivatized precursors, their aptitude for electropolymerisation and the electronic properties of the resulting polymers.
Abstract: Functional conjugated polymers prepared by electrochemical polymerization are reviewed. Various classes of functionalized polymers are considered such as polymers for energy storage and sensor applications, small band gap polymers and novel polymeric materials with original macromolecular structure. Particular emphasis is placed on the thiophene-based polymers and on the relationships between the structures of the various kinds of derivatized precursors, their aptitude for electropolymerisation and the electronic properties of the resulting polymers.
266 citations