Polycarbazole modified electrode; nitric oxide sensor

Prakash, Rajiv; Srivastava, R.C.; Seth, P. K.

doi:10.1007/s002890170036

Cited by 31 publications

(20 citation statements)

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“…The electrochemical measurement of NO is susceptible to interference from many biological species, especially nitrite, ascorbic acid (AA), uric acid (UA), dopamine (DA), and so on. The polymer selectively permeable membrane, such as Nafion [24][25][26], polycarbazole [27], polystyrene [28], polymeric xerogel [29], polytetrafluoroethylene [30] can limit the diffusion of interfering species to the surface of the electrode by electrostatic repulsion and/or hydrophobic character, increasing the selectivity of NO sensors. The sensitive sensing system is also well-designed to further improve the analytical performance of NO sensor.…”

Section: Introductionmentioning

confidence: 99%

Nanomaterials-based electrochemical sensors for nitric oxide

Dang

Wang

et al. 2014

Microchim Acta

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Electrochemical sensing has been demonstrated to represent an efficient way to quantify nitric oxide (NO) in challenging physiological environments. A sensing interface based on nanomaterials opens up new opportunities and broader prospects for electrochemical NO sensors. This review (with 141 refs.) gives a general view of recent advances in the development of electrochemical sensors based on nanomaterials. It is subdivided into sections on (i) carbon derived nanomaterials (such as carbon nanotubes, graphenes, fullerenes), (ii) metal nanoparticles (including gold, platinum and other metallic nanoparticles); (iii) semiconductor metal oxide nanomaterials (including the oxides of titanium, aluminum, iron, and ruthenium); and finally (iv) nanocomposites (such as those formed from carbon nanomaterials with nanoparticles of gold, platinum, NiO or TiO 2 ). The various strategies are discussed, and the advances of using nanomaterials and the trends in NO sensor technology are outlooked in the final section.

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Section: Introductionmentioning

confidence: 99%

Nanomaterials-based electrochemical sensors for nitric oxide

Dang

Wang

et al. 2014

Microchim Acta

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“…Many statements of the structure and polymerization mechanism of PCZ are translated from polypyrrole or polyindole studies. Therefore, extensive work has been devoted to the study of PCZ in the past several years [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition of High-quality Polycarbazole Films in Composite Electrolytes of Boron Trifluoride Diethyl Etherate and Ethyl Ether

Nie

Zhang

et al. 2006

J Appl Electrochem

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High-quality polycarbazole (PCZ) films were synthesized electrochemically by direct oxidation of carbazole in boron trifluoride diethyl etherate (BFEE) containing vol. 20% ethyl ether (EE). The oxidation potential of carbazole in this medium was measured to be only 0.90 V vs. SCE, which was lower than that determined in acetonitrile containing 0.1 mol l )1 Bu 4 NBF 4 (1.35 V vs. SCE). PCZ films obtained from this medium showed better electrochemical behavior, better thermal stability with conductivity of 7.5 Â 10 )3 S cm )1 being one order of magnitude higher than those reported previously, indicating that BFEE/EE was a better medium than acetonitrile for the electrosyntheses of PCZ films. As-formed PCZ films can be partly dissolved in acetone, acetonitrile and tetrahydrofuran. Spectral analysis provided evidence for the existence of the conjugated structure of the PCZ chain. Fluorescent spectra indicate that electrosynthesized PCZ is an ideal blue light emitter.

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“…Therefore, further surface modification with permselective membranes is required to achieve the desired selectivity for NO via size exclusion or electrostatic repulsion [4]. Indeed, several polymeric materials have been evaluated as gaspermeable or permselective membranes including nafion, collodion, polycarbazole, o-and m-phenylenediamine, poly(tetrafluoroethylene), cellulose acetate, and multilayer hybrids of these polymers [27,[30][31][32][33][34][35][36]. In particular, Shin et al reported that sol-gel-derived electrochemical sensors showed good sensitivity and selectivity for NO detection [17,27].…”

Section: Direct Methods (Nitric Oxide Sensor)mentioning

confidence: 99%

Real-Time Monitoring of Nitric Oxide Dynamics in the Myocardium: Biomedical Application of Nitric Oxide Sensor

Lee¹,

Lee²,

Park³

2017

Nitric Oxide Synthase - Simple Enzyme-Complex Roles

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Nitric oxide (NO) is an important physiological mediator that regulates a wide range of cellular processes in many tissues. Therefore, the accurate and reliable measurement of physiological NO concentration is essential to the understanding of NO signaling and its biological role. Most methods used for NO detection are indirect including spectroscopic approaches such as the Griess assay for nitrite and detection of methemoglobin after NO reaction with oxyhemoglobin. These methods cannot accurately reflect the changes in NO concentration in vivo and in real time. Therefore, direct methods are necessary for investigating biological process and diseases related to NO in biological conditions. There is a growing interest in the development of electrochemically based sensors for direct, in vivo, and real-time monitoring of NO. Electrochemical methods offer simplicity, good sensitivity, high selectivity, fast response times, and long-term calibration stability compared to other techniques including electron paramagnetic resonance, chemiluminescence, and fluorescence. In this article, we present real-time NO dynamics in the myocardium during myocardial ischemia-reperfusion (IR) utilizing electrochemical NO microsensor. And applications of electrochemical NO sensor for the evaluation of cardioprotective effects of therapeutic treatments such as drug administration and ischemic preconditioning are reviewed.

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Polycarbazole modified electrode; nitric oxide sensor

Cited by 31 publications

References 0 publications

Nanomaterials-based electrochemical sensors for nitric oxide

Nanomaterials-based electrochemical sensors for nitric oxide

Electrodeposition of High-quality Polycarbazole Films in Composite Electrolytes of Boron Trifluoride Diethyl Etherate and Ethyl Ether

Real-Time Monitoring of Nitric Oxide Dynamics in the Myocardium: Biomedical Application of Nitric Oxide Sensor

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