Electrosynthesis and characterization of composite polypyrrole-dextran-sulfite oxidase films

Samuel B. Adeloju; Anita Ohanessian; Nguyen N. Duc

doi:10.1016/j.synthmet.2005.07.226

Electrosynthesis and characterization of composite polypyrrole-dextran-sulfite oxidase films

Samuel B. Adeloju, Anita Ohanessian, Nguyen N. Duc

Science and Health

Federation University

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

5 Citations (Scopus)

Abstract

The electrosynthesis of a composite polypyrrole-dextran-sulphite oxidase (PPy-Dex-SOx) film was carried out by galvanostatic polymerisation. The simultaneous formation of a conducting polypyrrole support and the entrapment of sulfite oxidase (SOx) on a platinum electrode was accomplished in an aqueous solution which contained 0.5 M pyrrole, 0.02 g/1 dextran and 8 units/ml SOx at an applied current density of 0.25 mA/cm2 and a polymerization time of 25 sec. The conductivity of the resulting composite PPy-Dex-SOx film was as high as that of polypyrrole- sulfite oxidase (PPy-SOx) film, but the presence of dextran improved the mechanical stability of the composite film. The presence of SOx in the composite film was confirmed by scanning electron microscopy and arnperometric measurement of sulfite.

Original language	English
Pages (from-to)	17-20
Number of pages	4
Journal	Synthetic Metals
Volume	153
Issue number	1-3
DOIs	https://doi.org/10.1016/j.synthmet.2005.07.226
Publication status	Published - 21 Sept 2005

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title = "Electrosynthesis and characterization of composite polypyrrole-dextran-sulfite oxidase films",

abstract = "The electrosynthesis of a composite polypyrrole-dextran-sulphite oxidase (PPy-Dex-SOx) film was carried out by galvanostatic polymerisation. The simultaneous formation of a conducting polypyrrole support and the entrapment of sulfite oxidase (SOx) on a platinum electrode was accomplished in an aqueous solution which contained 0.5 M pyrrole, 0.02 g/1 dextran and 8 units/ml SOx at an applied current density of 0.25 mA/cm2 and a polymerization time of 25 sec. The conductivity of the resulting composite PPy-Dex-SOx film was as high as that of polypyrrole- sulfite oxidase (PPy-SOx) film, but the presence of dextran improved the mechanical stability of the composite film. The presence of SOx in the composite film was confirmed by scanning electron microscopy and arnperometric measurement of sulfite.",

keywords = "Control of interface structure and morphology, Detectors, Electrochemical methods, Electrochemical polymerization, Polypyrrole and derivatives, Scanning electron microscopy",

author = "Adeloju, {Samuel B.} and Anita Ohanessian and Duc, {Nguyen N.}",

year = "2005",

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doi = "10.1016/j.synthmet.2005.07.226",

language = "English",

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T1 - Electrosynthesis and characterization of composite polypyrrole-dextran-sulfite oxidase films

AU - Adeloju, Samuel B.

AU - Ohanessian, Anita

AU - Duc, Nguyen N.

PY - 2005/9/21

Y1 - 2005/9/21

N2 - The electrosynthesis of a composite polypyrrole-dextran-sulphite oxidase (PPy-Dex-SOx) film was carried out by galvanostatic polymerisation. The simultaneous formation of a conducting polypyrrole support and the entrapment of sulfite oxidase (SOx) on a platinum electrode was accomplished in an aqueous solution which contained 0.5 M pyrrole, 0.02 g/1 dextran and 8 units/ml SOx at an applied current density of 0.25 mA/cm2 and a polymerization time of 25 sec. The conductivity of the resulting composite PPy-Dex-SOx film was as high as that of polypyrrole- sulfite oxidase (PPy-SOx) film, but the presence of dextran improved the mechanical stability of the composite film. The presence of SOx in the composite film was confirmed by scanning electron microscopy and arnperometric measurement of sulfite.

AB - The electrosynthesis of a composite polypyrrole-dextran-sulphite oxidase (PPy-Dex-SOx) film was carried out by galvanostatic polymerisation. The simultaneous formation of a conducting polypyrrole support and the entrapment of sulfite oxidase (SOx) on a platinum electrode was accomplished in an aqueous solution which contained 0.5 M pyrrole, 0.02 g/1 dextran and 8 units/ml SOx at an applied current density of 0.25 mA/cm2 and a polymerization time of 25 sec. The conductivity of the resulting composite PPy-Dex-SOx film was as high as that of polypyrrole- sulfite oxidase (PPy-SOx) film, but the presence of dextran improved the mechanical stability of the composite film. The presence of SOx in the composite film was confirmed by scanning electron microscopy and arnperometric measurement of sulfite.

KW - Control of interface structure and morphology

KW - Detectors

KW - Electrochemical methods

KW - Electrochemical polymerization

KW - Polypyrrole and derivatives

KW - Scanning electron microscopy

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UR - http://www.scopus.com/inward/citedby.url?scp=24644434480&partnerID=8YFLogxK

U2 - 10.1016/j.synthmet.2005.07.226

DO - 10.1016/j.synthmet.2005.07.226

M3 - Article

AN - SCOPUS:24644434480

SN - 0379-6779

VL - 153

SP - 17

EP - 20

JO - Synthetic Metals

JF - Synthetic Metals

IS - 1-3

ER -

Electrosynthesis and characterization of composite polypyrrole-dextran-sulfite oxidase films

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