Electrical contacting of redox enzymes by means of oligoaniline-cross- linked enzyme/Carbon nanotube composites

Ilina Baravik; Ran Tel-Vered; Oded Ovits; Itamar Willner

doi:10.1021/la902074w

Electrical contacting of redox enzymes by means of oligoaniline-cross- linked enzyme/Carbon nanotube composites

Ilina Baravik, Ran Tel-Vered, Oded Ovits, Itamar Willner^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

The electropolymerization of aniline-functionalized carbon nanotubes (CNTs) and thioaniline-modified glucose oxidase (GOx) on a thioaniline monolayer-modified Au electrode yields a CNTs/GOx composite cross-linked by the redox-active bisaniline units. The three-dimensional conductivity of the CNTs matrix and the electron-transfer (relay) properties of the bisaniline components lead to the effective electrical wiring of the enzyme units with the electrode, and to the efficient bioelectrocatalytic oxidation of glucose (turnover rate ca. k_et = 1025 s^-1). The conditions to synthesize the three-dimensional CNTs/GOx composite and the parameters influencing the bioelectrocatalytic functions of the modified electrode are discussed

Original language	English
Pages (from-to)	13978-13983
Number of pages	6
Journal	Langmuir
Volume	25
Issue number	24
DOIs	https://doi.org/10.1021/la902074w
State	Published - 15 Dec 2009

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title = "Electrical contacting of redox enzymes by means of oligoaniline-cross- linked enzyme/Carbon nanotube composites",

abstract = "The electropolymerization of aniline-functionalized carbon nanotubes (CNTs) and thioaniline-modified glucose oxidase (GOx) on a thioaniline monolayer-modified Au electrode yields a CNTs/GOx composite cross-linked by the redox-active bisaniline units. The three-dimensional conductivity of the CNTs matrix and the electron-transfer (relay) properties of the bisaniline components lead to the effective electrical wiring of the enzyme units with the electrode, and to the efficient bioelectrocatalytic oxidation of glucose (turnover rate ca. ket = 1025 s-1). The conditions to synthesize the three-dimensional CNTs/GOx composite and the parameters influencing the bioelectrocatalytic functions of the modified electrode are discussed",

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T1 - Electrical contacting of redox enzymes by means of oligoaniline-cross- linked enzyme/Carbon nanotube composites

AU - Baravik, Ilina

AU - Tel-Vered, Ran

AU - Ovits, Oded

AU - Willner, Itamar

PY - 2009/12/15

Y1 - 2009/12/15

N2 - The electropolymerization of aniline-functionalized carbon nanotubes (CNTs) and thioaniline-modified glucose oxidase (GOx) on a thioaniline monolayer-modified Au electrode yields a CNTs/GOx composite cross-linked by the redox-active bisaniline units. The three-dimensional conductivity of the CNTs matrix and the electron-transfer (relay) properties of the bisaniline components lead to the effective electrical wiring of the enzyme units with the electrode, and to the efficient bioelectrocatalytic oxidation of glucose (turnover rate ca. ket = 1025 s-1). The conditions to synthesize the three-dimensional CNTs/GOx composite and the parameters influencing the bioelectrocatalytic functions of the modified electrode are discussed

AB - The electropolymerization of aniline-functionalized carbon nanotubes (CNTs) and thioaniline-modified glucose oxidase (GOx) on a thioaniline monolayer-modified Au electrode yields a CNTs/GOx composite cross-linked by the redox-active bisaniline units. The three-dimensional conductivity of the CNTs matrix and the electron-transfer (relay) properties of the bisaniline components lead to the effective electrical wiring of the enzyme units with the electrode, and to the efficient bioelectrocatalytic oxidation of glucose (turnover rate ca. ket = 1025 s-1). The conditions to synthesize the three-dimensional CNTs/GOx composite and the parameters influencing the bioelectrocatalytic functions of the modified electrode are discussed

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Electrical contacting of redox enzymes by means of oligoaniline-cross- linked enzyme/Carbon nanotube composites

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