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Rozsypal J, Sevcik J, Bartosova Z, Papouskova B, Jirovsky D, Hrbac J. Automated electrochemical determination of beer total antioxidant capacity employing microdialysis online-coupled with amperometry. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Duo HH, Xu JQ, Liu YL, Jin ZH, Hu XB, Huang WH. Construction of visible light-induced renewable electrode for monitoring of living cells. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.06.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Koh WCA, Son JI, Choe ES, Shim YB. Electrochemical Detection of Peroxynitrite Using a Biosensor Based on a Conducting Polymer−Manganese Ion Complex. Anal Chem 2010; 82:10075-82. [DOI: 10.1021/ac102041u] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wei Choon Alvin Koh
- Department of Chemistry, Institute of BioPhysio Sensor Technology and Department of Biological Sciences, Pusan National University, Busan 609-735, Korea
| | - Jung Ik Son
- Department of Chemistry, Institute of BioPhysio Sensor Technology and Department of Biological Sciences, Pusan National University, Busan 609-735, Korea
| | - Eun Sang Choe
- Department of Chemistry, Institute of BioPhysio Sensor Technology and Department of Biological Sciences, Pusan National University, Busan 609-735, Korea
| | - Yoon-Bo Shim
- Department of Chemistry, Institute of BioPhysio Sensor Technology and Department of Biological Sciences, Pusan National University, Busan 609-735, Korea
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Castriciano MA, Carbone A, Saccà A, Donato MG, Micali N, Romeo A, De Luca G, Scolaro LM. Optical and sensing features of TPPS4 J-aggregates embedded in Nafion® membranes: influence of casting solvents. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b924667c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Comparative study of the effect of various electrode membranes on biofouling and electrochemical measurements. Electrochem commun 2009. [DOI: 10.1016/j.elecom.2009.05.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Continuous electrochemical monitoring of nitric oxide production in murine macrophage cell line RAW 264.7. Anal Bioanal Chem 2009; 394:1497-504. [DOI: 10.1007/s00216-009-2813-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2009] [Revised: 04/17/2009] [Accepted: 04/17/2009] [Indexed: 02/07/2023]
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Amatore C, Arbault S, Guille M, Lemaître F. Electrochemical Monitoring of Single Cell Secretion: Vesicular Exocytosis and Oxidative Stress. Chem Rev 2008; 108:2585-621. [DOI: 10.1021/cr068062g] [Citation(s) in RCA: 316] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Rahman MA, Kumar P, Park DS, Shim YB. Electrochemical Sensors Based on Organic Conjugated Polymers. SENSORS (BASEL, SWITZERLAND) 2008; 8:118-141. [PMID: 27879698 PMCID: PMC3681146 DOI: 10.3390/s8010118] [Citation(s) in RCA: 230] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2007] [Accepted: 01/04/2008] [Indexed: 11/20/2022]
Abstract
Organic conjugated polymers (conducting polymers) have emerged as potentialcandidates for electrochemical sensors. Due to their straightforward preparation methods,unique properties, and stability in air, conducting polymers have been applied to energystorage, electrochemical devices, memory devices, chemical sensors, and electrocatalysts.Conducting polymers are also known to be compatible with biological molecules in aneutral aqueous solution. Thus, these are extensively used in the fabrication of accurate,fast, and inexpensive devices, such as biosensors and chemical sensors in the medicaldiagnostic laboratories. Conducting polymer-based electrochemical sensors and biosensorsplay an important role in the improvement of public health and environment because rapiddetection, high sensitivity, small size, and specificity are achievable for environmentalmonitoring and clinical diagnostics. In this review, we summarized the recent advances inconducting polymer-based electrochemical sensors, which covers chemical sensors(potentiometric, voltammetric, amperometric) and biosensors (enzyme based biosensors,immunosensors, DNA sensors).
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Affiliation(s)
- Md Aminur Rahman
- Department of Chemistry and Center for Innovative Bio.Physio Sensor Technology, Pusan National University, Keumjeong-ku, Busan 609-735, South Korea.
| | - Pankaj Kumar
- Department of Chemistry and Center for Innovative Bio.Physio Sensor Technology, Pusan National University, Keumjeong-ku, Busan 609-735, South Korea.
| | - Deog-Su Park
- Department of Chemistry and Center for Innovative Bio.Physio Sensor Technology, Pusan National University, Keumjeong-ku, Busan 609-735, South Korea.
| | - Yoon-Bo Shim
- Department of Chemistry and Center for Innovative Bio.Physio Sensor Technology, Pusan National University, Keumjeong-ku, Busan 609-735, South Korea.
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Abstract
Since nitric oxide (NO) was identified as the endothelial-derived relaxing factor in the late 1980s, many approaches have attempted to provide an adequate means for measuring physiological levels of NO. Although several techniques have been successful in achieving this aim, the electrochemical method has proved the only technique that can reliably measure physiological levels of NO in vitro, in vivo, and in real time. We describe here the development of electrochemical sensors for NO, including the fabrication of sensors, the detection principle, calibration, detection limits, selectivity, and response time. Furthermore, we look at the many experimental applications where NO selective electrodes have been successfully used.
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Affiliation(s)
- Ian R Davies
- World Precision Instruments Limited, Aston, United Kingdom
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Hrbác J, Gregor C, Machová M, Králová J, Bystron T, Cíz M, Lojek A. Nitric oxide sensor based on carbon fiber covered with nickel porphyrin layer deposited using optimized electropolymerization procedure. Bioelectrochemistry 2007; 71:46-53. [PMID: 17084679 DOI: 10.1016/j.bioelechem.2006.09.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2006] [Revised: 09/11/2006] [Accepted: 09/17/2006] [Indexed: 11/18/2022]
Abstract
Electropolymerization regime of meso-tetrakis(3-methoxy-4-hydroxyphenyl) porphyrin is optimized to yield films possessing both electrocatalytical and permselective properties towards nitric oxide oxidation. The sensor composed of electrochemically oxidized carbon fiber, covered solely with nickel porphyrin derivative layer electropolymerized using our method, is characterized by high selectivity towards nitrite (1:600), ascorbate (1:8000) and dopamine (>1:80), determined by constant potential amperometry at 830 mV (vs. Ag/AgCl). Selectivity for ascorbate and dopamine as well as detection limit for NO (1.5 nM at S/N=3) is 5-10 times better than parameters usually reported for Nafion coated porphyrinic sensors. Nafion coating can further enhance selectivity properties as well as aids to the stability of the sensors' responses.
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Affiliation(s)
- Jan Hrbác
- Department of Physical Chemistry, Palacký University, Faculty of Science, tr. Svobody 26, 771 46 Olomouc, Czech Republic.
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Schuvailo O, Gáspár S, Soldatkin A, Csöregi E. Ultramicrobiosensor for the Selective Detection of Glutamate. ELECTROANAL 2007. [DOI: 10.1002/elan.200603707] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Lhuillier F, Robert MO, Crova P, Goudable J, Arnal F, Cespuglio R, Annat G, Viale JP. Nitric oxide and liver microcirculation during autoregulation and haemorrhagic shock in rabbit model. Br J Anaesth 2006; 97:137-46. [PMID: 16613926 DOI: 10.1093/bja/ael097] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Direct evidence of nitric oxide (NO) involvement in the regulation of hepatic microcirculation is not yet available under physiological conditions nor in haemorrhagic shock. METHODS A laser Doppler flowmetry was used to measure liver perfusion index and a specific NO-sensitive electrode was inserted into liver parenchyma of anaesthetized rabbits. Hepatic autoregulation during moderate hypovolaemia {mean arterial pressure at 50 mm Hg without liver perfusion alteration; blood withdrawal 17.7 (4.2) ml [mean (SD)]} or haemorrhagic shock [mean arterial pressure at 20 mm Hg associated with liver perfusion impairment and lactic acidosis; blood withdrawal 56.0 (6.8) ml] were investigated over 60 min and were followed by a rapid infusion of the shed blood. Involvement of NO synthases was evaluated using a non-specific inhibitor, NAPNA (Nomega-nitro-L-arginine P-nitro-anilide). RESULTS In the autoregulation group, a decrease [30.0 (4.0) mm Hg] of mean arterial pressure did not alter liver perfusion index, whereas the liver NO concentration increased and reached a plateau [125 (10)%; compared with baseline; P<0.05]. This NO concentration was reduced to zero by the administration of NO synthase inhibitor. Haemorrhagic shock led to a rapid decrease in liver perfusion index [60 (7)%; compared with baseline; P<0.05] before an immediate and continuous increase in NO concentration [250 (50)%; compared with baseline; P<0.05]. Infusion of NO inhibitor before haemorrhagic shock reduced the NO concentration to zero and hepatic perfusion by 60 (8)% (P<0.05) of the baseline. Mean arterial pressure increased simultaneously. In these animals, during haemorrhage, a continuous increase in NO concentration still occurred and liver perfusion slightly increased. In all groups but NAPNA+haemorrhagic shock, blood replacement induced recovery of baseline values. CONCLUSIONS NO plays a physiological role in the liver microcirculation during autoregulation. Its production is enzyme-dependent. Conversely, haemorrhagic shock induces a rapid increase in hepatic NO that is at least partially enzyme-independent.
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Affiliation(s)
- F Lhuillier
- Département d'Anesthésie-Réanimation, Hôpital de la Croix Rousse, 103 Grande Rue de la Croix-Rousse, 69317 Lyon Cedex 04, France.
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Diab N, Oni J, Schuhmann W. Electrochemical nitric oxide sensor preparation: a comparison of two electrochemical methods of electrode surface modification. Bioelectrochemistry 2005; 66:105-10. [PMID: 15833709 DOI: 10.1016/j.bioelechem.2004.03.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2004] [Accepted: 03/17/2004] [Indexed: 11/28/2022]
Abstract
Platinum electrodes modified with Mn(II) 5-(N-(8-pyrrole-yl-3,6-dioxa-1-aminooctane)phenylamide-10,15,20-trimethoxyphenylporphyrin (Mn(II)triOMeTCPPyP) using multi-sweep cyclic voltammetry and differential pulse amperometry were evaluated as electrocatalytic surfaces for the oxidation of nitric oxide. The electrodes modified using the pulse amperometric approach were more sensitive towards the detection of nitric oxide. The increased sensitivity led to the attainment of a wider linear dynamic range for the quantification of nitric oxide.
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Affiliation(s)
- Nizam Diab
- Lehrstuhl fur Analytische Chemie-Elektroanalytik and Sensorik, Ruhr-Univeristät Bochum, Universitätsstr. 150, D-44780 Bochum, Germany
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Wilson GS, Gifford R. Biosensors for real-time in vivo measurements. Biosens Bioelectron 2005; 20:2388-403. [PMID: 15854814 DOI: 10.1016/j.bios.2004.12.003] [Citation(s) in RCA: 363] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2004] [Revised: 11/01/2004] [Accepted: 12/02/2004] [Indexed: 11/29/2022]
Abstract
The current status of sensors capable of continuous measurement of analytes in biological media is reviewed. This review containing 173 references deals with devices whose use in single cells, tissue slices, animal models and humans has been demonstrated. In addition to sensors specific for glucose, lactate, glutamate, pyruvate, choline and acetylcholine, insights obtained from monitoring nitric oxide, Na(+), K(+), Ca(2+), and dopamine are presented. Performance criteria for sensor performance are described as is the subject of biosensor calibration. Biocompatibility issues are dealt with in some detail as is the status of continuous blood glucose monitoring in humans.
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Affiliation(s)
- George S Wilson
- Department of Chemistry, University of Kansas, Malott Hall, Lawrence, KS 66045, USA.
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DuBois CJ, Abboud KA, Reynolds JR. Electrolyte-Controlled Redox Conductivity and n-Type Doping in Poly(bis-EDOT-pyridine)s. J Phys Chem B 2004. [DOI: 10.1021/jp037013u] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- C. J. DuBois
- Department of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, Gainesville, Florida 32611
| | - Khalil A. Abboud
- Department of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, Gainesville, Florida 32611
| | - John R. Reynolds
- Department of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, Gainesville, Florida 32611
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Sharpe MA, Robb SJ, Clark JB. Nitric oxide and Fenton/Haber-Weiss chemistry: nitric oxide is a potent antioxidant at physiological concentrations. J Neurochem 2003; 87:386-94. [PMID: 14511116 DOI: 10.1046/j.1471-4159.2003.02001.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We have examined the action of nitric oxide (NO) on the ability of Fenton's reagent (ferrous iron and hydrogen peroxide), to oxidize a number of organic optical probes. We found that NO is able to arrest the oxidation of organic compounds at concentrations of NO found in brain, in vivo. We present evidence that Fenton's reagent proceeds via a ferryl intermediate ([Fe[double bond]O]2+), before the generation of hydroxyl radical *OH. NO reacts rapidly with this ferryl, blocking the production of *OH. We propose that NO has an important role in protecting biological tissues, and the brain in particular, from Fenton chemistry.
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Affiliation(s)
- Martyn A Sharpe
- Miriam Marks Department of Neurochemistry, Institute of Neurology, University College London, UK.
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Oni J, Diab N, Radtke I, Schuhmann W. Detection of NO release from endothelial cells using Pt micro electrodes modified with a pyrrole-functionalised Mn(II) porphyrin. Electrochim Acta 2003. [DOI: 10.1016/s0013-4686(03)00404-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Brown FO, Lowry JP. Microelectrochemical sensors for in vivo brain analysis: an investigation of procedures for modifying Pt electrodes using Nafion. Analyst 2003; 128:700-5. [PMID: 12866891 DOI: 10.1039/b300266g] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Various Nafion coating procedures were examined in order to design a simple and reproducible coating method to maximise permselective characteristics, and thus eliminate signals from electroactive interferents, in sensors designed for direct in vivo measurements in the brain. Interferents investigated included ascorbic acid (AA), the principal endogenous electroactive interferent present in the brain, and uric acid. Application of the Nafion (5% commercial solution) using a thermally annealing procedure involving 5 pre-coats, and 2 subsequent dip-bake layers resulted in elimination of interferent signals. It also produced complete blocking of the signal for the neurotransmitter dopamine. The optimum time and temperature for annealing was found to be 5 min at 210 degrees C. An examination of shelf life over two weeks indicated negligible AA interference over this period. Preliminary investigations with respect to the potential use of these Nafion-modified Pt electrodes in the design of implantable, first generation, peroxide detecting biosensors indicated that the modified electrode had no effect on O2 permeability but did produce a significant decrease in H2O2 sensitivity. While this may preclude their use in biosensor development they may be more suitable for detection of gaseous neurochemicals such as nitric oxide.
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Affiliation(s)
- Finbar O Brown
- Sensors Development Unit, Bioelectroanalysis Laboratory, Department of Chemistry, National University of Ireland, Maynooth, Co. Kildare, Ireland
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Leonard CS, Michaelis EK, Mitchell KM. Activity-dependent nitric oxide concentration dynamics in the laterodorsal tegmental nucleus in vitro. J Neurophysiol 2001; 86:2159-72. [PMID: 11698508 DOI: 10.1152/jn.2001.86.5.2159] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The behavioral-state related firing of mesopontine cholinergic neurons of the laterodorsal tegmental nucleus appears pivotal for generating both arousal and rapid-eye-movement sleep. Since these neurons express high levels of nitric oxide synthase, we investigated whether their firing increases local extracellular nitric oxide levels. We measured nitric oxide in the laterodorsal tegmental nucleus with a selective electrochemical microprobe (35 microm diam) in brain slices. Local electrical stimulation at 10 or 100 Hz produced electrochemical responses that were attributable to nitric oxide. Stimulus trains (100 Hz; 1 s) produced biphasic increases in nitric oxide that reached a mean peak concentration of 33 +/- 2 (SE) nM at 4.8 +/- 0.4 s after train onset and decayed to a plateau concentration of 8 +/- 1 nM that lasted an average of 157 +/- 23.4 s (n = 14). These responses were inhibited by N(G)-nitro-L-arginine-methyl-ester (1 mM; 92% reduction of peak; n = 3) and depended on extracellular Ca(2+). Chemically reduced hemoglobin attenuated both the electrically evoked responses and those produced by authentic nitric oxide. Application of the precursor, L-arginine (5 mM) augmented the duration of the electrically evoked response, while tetrodotoxin (1 microM) abolished it. Analysis of the stimulus-evoked field potentials indicated that electrically evoked nitric oxide production resulted from a direct, rather than synaptic, activation of laterodorsal tegmental neurons because neither nitric oxide production nor the field potentials were blocked by ionotropic glutamate receptor inhibitors. Nevertheless, application of N-methyl-D-aspartate also increased local nitric oxide concentration by 39 +/- 14 nM (n = 8). Collectively, these data demonstrate that laterodorsal tegmental neuron activity elevates extracellular nitric oxide concentration probably via somatodendritic nitric oxide production. These data support the hypothesis that nitric oxide can function as a local paracrine signal during the states of arousal and rapid-eye-movement sleep when the firing of mesopontine cholinergic neurons are highest.
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Affiliation(s)
- C S Leonard
- Department of Physiology, New York Medical College, Valhalla, New York 10595, USA
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Vilakazi SL, Nyokong T. Voltammetric determination of nitric oxide on cobalt phthalocyanine modified microelectrodes. J Electroanal Chem (Lausanne) 2001. [DOI: 10.1016/s0022-0728(01)00583-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Diab N, Schuhmann W. Electropolymerized manganese porphyrin/polypyrrole films as catalytic surfaces for the oxidation of nitric oxide. Electrochim Acta 2001. [DOI: 10.1016/s0013-4686(01)00565-5] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Záruba K, Setnička V, Charvátová J, Rusin O, Tománková Z, Hrdlička J, Sýkora D, Král V. Analytical Application of Oligopyrrole Macrocycles. ACTA ACUST UNITED AC 2001. [DOI: 10.1135/cccc20010693] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Progress of modern analytical chemistry is closely related with advancement in other fields such as organic chemistry and biochemistry. Successful solution of current scientific problems is inconceivable without close cooperation of different chemical disciplines. As an example of such hot and very intricate theme research in the field of molecular recognition of biologically active compounds can serve, where numerous methods of analytical chemistry, organic chemistry and biochemistry can suitably be utilized, elaborated and brought into consonance. This multidisciplinary overlap logically leads to the advent of new scientific fields with their own tools, methodologies and subjects of exploration - bioanalytical chemistry and nanotechnology. This review covers different aspects of analytical application of oligopyrrole macrocycles (mainly porphyrins and sapphyrins). These compounds are widely used in analytical chemistry due to their outstanding optical properties. In our contribution oligopyrrole macrocycles are considered as signaling and structural parts of chemical receptors and selectors in various applications. Introduction of different moieties into meso-position of macrocyclic rings allows to obtain e.g., sterically well-organized receptors for recognition of biologically important analytes, new chromatographic materials, and powerful tools in electrochemical research. Finally, future trends in the field are outlined briefly.
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Konon A, Maksymiuk K, Galus Z. Studies on Charge Trapping in Polypyrrole and Poly (N-methylpyrrole) Based Bilayers of Polymers with Opposite Ion-Exchange Properties. ELECTROANAL 2000. [DOI: 10.1002/(sici)1521-4109(200005)12:8<593::aid-elan593>3.0.co;2-h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Pei J, Yu NT, Li XY. Electrocatalytic detection of biological nitric oxide at an ultramicroelectrode modified with an electrodeposited CuPtCl6 film. Anal Chim Acta 1999. [DOI: 10.1016/s0003-2670(99)00553-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Pontié M, Bedioui F, Devynck J. New Composite Modified Carbon Microfibers for Sensitive and Selective Determination of Physiologically Relevant Concentrations of Nitric Oxide in Solution. ELECTROANAL 1999. [DOI: 10.1002/(sici)1521-4109(199908)11:12<845::aid-elan845>3.0.co;2-d] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Affiliation(s)
- J Wang
- Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces 88003, USA
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Simultaneous voltammetric measurement of nitrite ion, dopamine, serotonin with ascorbic acid on the GRC electrode. Electrochim Acta 1999. [DOI: 10.1016/s0013-4686(99)00087-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Electrochemical behaviour of FAD and FMN immobilised on TiO2 modified carbon fibres supported by ATR-IR spectroscopy of FMN on TiO2. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0302-4598(98)00182-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Affiliation(s)
- James L. Anderson
- Department of Chemistry, University of Georgia, Athens, Georgia 30602-2556
| | - Louis A. Coury
- Bioanalytical Systems Inc., 2701 Kent Avenue, West Lafayette, Indiana 47906-1382
| | - Johna Leddy
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242
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