NADH electrooxidation using carbon paste electrodes modified with nitro-fluorenone derivatives immobilized on zirconium phosphate

Munteanu, Florentina; Mano, Nicolas; Kuhn, Alexander; Gorton, Lo

doi:10.1016/j.jelechem.2003.10.034

Cited by 39 publications

(30 citation statements)

References 59 publications

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“…One of the most promising ways to overcome this problem is the use of a redox mediator, usually immobilized on the electrode surface (Gorton and Domínguez, 2002). Most of these modified electrodes are based on solid electrodes; however, recently the use of other electrode materials such as carbon paste and CNT paste have started to become popular for electrode modification (Munteanu et al, 2004;Guan et al, 2005;Wang, 2005) because of their easy preparation and possibility of surface renewal.…”

Section: Introductionmentioning

confidence: 99%

Development of a carbon nanotube paste electrode osmium polymer-mediated biosensor for determination of glucose in alcoholic beverages

Antiochia

Gorton

2007

Biosensors and Bioelectronics

117

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Section: Introductionmentioning

confidence: 99%

Development of a carbon nanotube paste electrode osmium polymer-mediated biosensor for determination of glucose in alcoholic beverages

Antiochia

Gorton

2007

Biosensors and Bioelectronics

117

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“…Several authors have demonstrated the use of this material for the construction of NADH biosensors. Mediators previously immobilized in α-ZrP are phenoxazines, phenothiazines, phenazines, fluorenones and flavines [15,[37][38][39][40]. These authors did not use enzymes in their studies nor provided X-ray powder diffraction (XRPD) evidence of the mediator intercalation into the layered material.…”

Section: Introductionmentioning

confidence: 99%

NADH Electrooxidation Using Bis(1,10-phenanthroline-5,6-dione)(2,2′-bipyridine)ruthenium(II)-Exchanged Zirconium Phosphate Modified Carbon Paste Electrodes

et al. 2006

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We present a carbon paste electrode (CPE) modified using the electron mediator bis(1,10-phenanthroline-5,6-dione) (2,2′-bipyridine)ruthenium(II) ([Ru(phend) 2+ exhibited luminescence even at low concentration. Modified CPEs were constructed and analyzed using cyclic voltammetry. The intercalated mediator remained electroactive within the layers (E°′ = −38.5 mV vs. Ag/AgCl, 3.5 M NaCl) and electrocatalysis of NADH oxidation was observed. The kinetics of the modified CPE shows a Michaelis -Menten behavior. This CPE was used for the oxidation of NADH in the presence of Bakers' yeast alcohol dehydrogenase. A calibration plot for ethanol is presented.

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“…Siloxane-poly (propylene oxide) PPO nanocomposites were prepared by the sol-gel method as described elsewhere. 49 Equimolar amounts of 3-isocyanatopropyl thietoxy-silane (IsoTrTEOS) and 0,0'-Bis(2-aminepropyl)-polypropyleneglicol) were stirred with tetrahydrofurane (THF) under reflux for 24 h. THF was evaporated and the hybrid precursor 3(Et O)-Si-(PPO)-Si (OEt) 3 was obtained. PPO polymers with molecular mass of 300 and 400 g mol -1 were expressed as PPO 300 and PPO 4000, respectively.…”

Section: Graphite Electrode Modified By Using Thin Films Siloxane Polmentioning

confidence: 99%

“…1.6) constitute the largest group of enzymes known: their number is more than 500. 2 Problems associated with the direct oxidation of NADH on the electrode surface have resulted in the development of several strategies to obtain mediator modified electrode surfaces 3 where the electrocatalytic oxidation of NADH can take place at much lower overvoltages decreasing the effects of products adsorption and side reaction resulting in the formation of enzymatically active NAD + and also providing a high selectivity for amperometric detection of NADH. 4 Some compounds, such as quinines, 5 alkylphenezinium ions 6 and phenoxazine derivatives, 7 have been used as mediators for this purpose.…”

Section: Introductionmentioning

confidence: 99%

Strategies for developing NADH detector based on meldola blue in different immobilization methods: a comparative study

Mariotti¹,

Riccardi²,

Fertonani³

et al. 2006

J. Braz. Chem. Soc.

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Foi realizado um estudo comparativo entre duas metodologias de imobilização do Azul de Meldola (MB), utilizado para diminuir o potencial de oxidação do NADH. O estudo foi realizado no eletrodo de carbono vítreo através da eletropolimerização do pirrol e MB, empregando a técnica de voltametria cíclica e avaliando-se o efeito do número de ciclos para definir a espessura e a estabilidade do filme. Com 25 ciclos foi obtido o melhor resultado. Foi também investigada a modificação do eletrodo de grafite com filme formado pelo sistema sol-gel PPO 300 ou PPO 4000 pelo método de recobrimento por mergulho, através de dois métodos: oclusão e adsorção. O melhor método foi o de adsorção da MB durante 10 min, seguida de depósito do filme PPO 300, favorecido pelo tempo de secagem (24 horas). A adsorção da MB seguido do depósito do PPO 300 apresentou maior intervalo linear do que a metodologia do PPY.A comparative study was accomplished between two immobilization methodologies for the meldola's blue (MB), used to decrease the oxidation potential of NADH. The study was performed with glassy carbon electrode by electropolymerization of pyrrole and MB through the technique of cyclic voltammetry being evaluated the effect of the number of cycles to define the thickness and the stability of the film. With 25 cycles it was obtained the best result. They were also investigated the modification of the graphite electrode with film formed by the system sol-gel PPO 300 or PPO 4000 for the dip-coating, through two methods: occlusion and adsorption. The best method was it of adsorption of MB during 10 min, following by deposit of the film PPO 300, favored for the time of drying (24 hours). The adsorption of MB followed by PPO 300 deposition presented broader linear range than PPy methodology

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NADH electrooxidation using carbon paste electrodes modified with nitro-fluorenone derivatives immobilized on zirconium phosphate

Cited by 39 publications

References 59 publications

Development of a carbon nanotube paste electrode osmium polymer-mediated biosensor for determination of glucose in alcoholic beverages

Development of a carbon nanotube paste electrode osmium polymer-mediated biosensor for determination of glucose in alcoholic beverages

NADH Electrooxidation Using Bis(1,10-phenanthroline-5,6-dione)(2,2′-bipyridine)ruthenium(II)-Exchanged Zirconium Phosphate Modified Carbon Paste Electrodes

Strategies for developing NADH detector based on meldola blue in different immobilization methods: a comparative study

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