Multilayered construction of glucose oxidase on gold electrodes based on layer-by-layer covalent attachment

Zhang, Suxia; Yang, Weiwei; Niu, Yaming; Sun, Chang Q.

doi:10.1016/j.aca.2004.07.053

Cited by 51 publications

(35 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The sensitivity of the GOx-modified porous gold nanowire-array electrode is about 15.6 mA cm À2 mm À1 , which is higher than 5.11 and and similar to 15.1 mA cm À2 mm À1 for GOx-modified gold electrodes based on layer-by-layer covalent attachment. [19,44] The detection limit (dl) was calculated as dl = 3 s b /m, where s b is the standard deviation of the background current, and m the slope of the linear part of the calibration curve. [45] A detection limit of 4.6 10 À5 m can be obtained, which is in the typical range of detection limits of GOx-based biosensors.…”

Section: Resultsmentioning

confidence: 99%

“…[45] A detection limit of 4.6 10 À5 m can be obtained, which is in the typical range of detection limits of GOx-based biosensors. [19,27,44,46] The effect of ascorbic acid was investigated by measuring the amperometric response toward 0.5 mm ascorbic acid, and the absence of observable interference at À0.1 V suggests that ascorbic acid is not electrochemically active at this potential. This result is consistent with those of previous studies.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Direct Electrodeposition of Porous Gold Nanowire Arrays for Biosensing Applications

Zhang

Bourgeois

et al. 2009

ChemPhysChem

View full text Add to dashboard Cite

Nanochannel alumina templates are used as templates for fabrication of porous gold nanowire arrays by a direct electrodeposition method. After modification with glucose oxidase, a porous gold nanowire-array electrode is shown to be an excellent electrochemical biosensor for the detection of glucose. The picture shows an SEM image of a nanowire array after removal of the alumina template by acid dissolution. We report the fabrication of porous gold nanowire arrays by means of a one-step electrodeposition method utilizing nanochannel alumina templates. The microstructure of gold nanowires depends strongly on the current density. The formation of porous gold nanowires is attributed to disperse crystallization under conditions of low nucleation rate. Interfacial electron transport through the porous gold nanowires is studied by electrochemical impedance spectroscopy. Cyclic voltammetric studies on the porous gold nanowire arrays reveal a low-potential electrocatalytic response towards hydrogen peroxide. The properties of the glucose oxidase modified porous gold nanowire array electrode are elucidated and compared with those of nonporous enzyme electrodes. The glucose oxidase modified porous gold nanowire-array electrode is shown to be an excellent electrochemical biosensor for the detection of glucose.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Direct Electrodeposition of Porous Gold Nanowire Arrays for Biosensing Applications

Zhang

Bourgeois

et al. 2009

ChemPhysChem

View full text Add to dashboard Cite

show abstract

“…Their bimolecular rate constants for FADH 2 -GOx oxidation range from 3 × 10 4 to 8 × 10 6 M -1 s -1 . 148 The most intensively studied ferrocene-derivatives are ferrocenemethanol 88,90,91,[149][150][151][152][153][154][155][156][157][158][159][160][161] and ferrocenecarboxylic acid. 155,[162][163][164] Several of the ferrocenes meet the requirements for application in blood-glucose analyzers, which include high solubility in water, fast electron-shuttling, stability, and pH-independence of the redox potential.…”

Section: Metal-organic Mediatorsmentioning

confidence: 99%

Electrochemical Glucose Sensors and Their Applications in Diabetes Management

2008

View full text Add to dashboard Cite

About 6,000 peer reviewed articles have been published on electrochemical glucose assays and sensors, of which 700 were published in the 2005-2006 two-year period. Their number makes a full review of the literature, or even of the most recent advances, impossible. Nevertheless, this review should acquaint the reader with the fundamentals of the electrochemistry of glucose and provide a perspective of the evolution of the electrochemical glucose assays and monitors helping diabetic people, who constitute about 5% of the world's population. Because of the large number of diabetic people, no assay is performed more frequently than that of glucose. Most of these assays are electrochemical. The reader interested also in nonelectrochemical assays used in, or proposed for, the management of diabetes is referred to a 2007 review of Kondepati and Heise. 1 Adam Heller was born in 1933. Surviving the Holocaust, he arrived in Israel in 1945. He received his M.Sc. in Chemistry and Physics in 1957, then his PhD in Organic Chemistry in 1961 from Ernst David Bergman at the Hebrew University in Jerusalem. He postdoced at UC Berkeley (1962-3) and at Bell Laboratories . At GTE Labs (1964-1975 he built the first Nd 3+ liquid laser and, with J. J. Auborn, the still worldwide used Li/SOCl 2 battery. At Bell Labs (1975)(1976)(1977)(1978)(1979)(1980)(1981)(1982)(1983)(1984)(1985)(1986)(1987)(1988) he designed the first >10% efficient electrochemical solar cells and the first >10% efficient hydrogengenerating solar-powered photoelectrode. He also headed Bell Labs' Electronic Materials Research Department (1977)(1978)(1979)(1980)(1981)(1982)(1983)(1984)(1985)(1986)(1987)(1988), which developed part of the high density chip interconnection technology underlying the miniaturization of portable electronic devices. He was appointed to the Ernest Cockrell Sr. Chair in Engineering of the University of Texas at Austin in 1988, and in 2001 became one of UT's first Research Professors. At UT he pioneered the electrical wiring of enzymes. In 1996 he cofounded with his son Ephraim Heller TheraSense Inc., now part of Abbott Diabetes Care, to improve the lives of diabetic people. The company introduced in 2000 the blood sugar monitor FreeStyle, a thin-layer microcoulometer utilizing only 300 nL of blood, so little that it was, for the first time, painlessly obtained. In 2007 it provided for more than 1 billion painless glucose assays. After alleviating the pain of diabetes monitoring, FreeStyle Navigator, based on the electrical wiring of glucose oxidase, introduced in 2007 in Europe and Israel and in 2008 in the U.S., removed the worry of diabetic people by continuously monitoring their glucose levels. Heller aims his work at alleviating suffering through bioelectrochemistry.

show abstract

“…There are several reports on MeOHFc mediated biosensor (Setti et al, 2005;Piro et al, 2001;Zhang et al, 2004a). However, MeOHFc was generally added directly into the test solution, which results in many application problems.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical study of ferrocenemethanol-modified layered double hydroxides composite matrix: Application to glucose amperometric biosensor

Shan

Yao

Han

2007

Biosensors and Bioelectronics

View full text Add to dashboard Cite

Multilayered construction of glucose oxidase on gold electrodes based on layer-by-layer covalent attachment

Cited by 51 publications

References 28 publications

Direct Electrodeposition of Porous Gold Nanowire Arrays for Biosensing Applications

Direct Electrodeposition of Porous Gold Nanowire Arrays for Biosensing Applications

Electrochemical Glucose Sensors and Their Applications in Diabetes Management

Electrochemical study of ferrocenemethanol-modified layered double hydroxides composite matrix: Application to glucose amperometric biosensor

Contact Info

Product

Resources

About