High-sensitivity urea sensor based on the composite film of electroinactive polypyrrole with polyion complex

Tetsuya Osaka; Shinichi Komaba; Michiko Seyama; Katsuhisa Tanabe

doi:10.1016/S0925-4005(97)80114-1

High-sensitivity urea sensor based on the composite film of electroinactive polypyrrole with polyion complex

Tetsuya Osaka^*, Shinichi Komaba, Michiko Seyama, Katsuhisa Tanabe

^*Corresponding author for this work

Research Organization for Nano & Life Innovation

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

61 Citations (Scopus)

Abstract

A high-sensitivity urea sensor consisting of the composite film of electropolymerized electroinactive polypyrrole (PPy) with the polyion complex containing urease (Urs) was fabricated. This sensor showed potential response to urea within 20 s by detection of pH change during enzymatic reaction with a pH-sensitive electroinactive PPy. The urea response became higher with the slope of 110 mV decade^-1. This high sensitivity was attributed to the effective immobilization of the large number of Urs by electropolymerization on the electrode pre-coated with polyion complex.

Original language	English
Pages (from-to)	463-469
Number of pages	7
Journal	Sensors and Actuators, B: Chemical
Volume	36
Issue number	1-3
DOIs	https://doi.org/10.1016/S0925-4005(97)80114-1
Publication status	Published - 1996 Oct

Keywords

Biosensor
Electropolymerization
Polyion complex
Polypyrrole
Urea sensor

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1016/S0925-4005(97)80114-1

Cite this

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title = "High-sensitivity urea sensor based on the composite film of electroinactive polypyrrole with polyion complex",

abstract = "A high-sensitivity urea sensor consisting of the composite film of electropolymerized electroinactive polypyrrole (PPy) with the polyion complex containing urease (Urs) was fabricated. This sensor showed potential response to urea within 20 s by detection of pH change during enzymatic reaction with a pH-sensitive electroinactive PPy. The urea response became higher with the slope of 110 mV decade-1. This high sensitivity was attributed to the effective immobilization of the large number of Urs by electropolymerization on the electrode pre-coated with polyion complex.",

keywords = "Biosensor, Electropolymerization, Polyion complex, Polypyrrole, Urea sensor",

author = "Tetsuya Osaka and Shinichi Komaba and Michiko Seyama and Katsuhisa Tanabe",

note = "Funding Information: This work was financially supported by both a Grant-in-Aid for Scientific Research on Priority Areas No. 236 and a Grant-in-Aid for Encouragement of Young Scientists, the Ministry of Education and Culture of Japan.",

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AU - Osaka, Tetsuya

AU - Komaba, Shinichi

AU - Seyama, Michiko

AU - Tanabe, Katsuhisa

N1 - Funding Information: This work was financially supported by both a Grant-in-Aid for Scientific Research on Priority Areas No. 236 and a Grant-in-Aid for Encouragement of Young Scientists, the Ministry of Education and Culture of Japan.

PY - 1996/10

Y1 - 1996/10

N2 - A high-sensitivity urea sensor consisting of the composite film of electropolymerized electroinactive polypyrrole (PPy) with the polyion complex containing urease (Urs) was fabricated. This sensor showed potential response to urea within 20 s by detection of pH change during enzymatic reaction with a pH-sensitive electroinactive PPy. The urea response became higher with the slope of 110 mV decade-1. This high sensitivity was attributed to the effective immobilization of the large number of Urs by electropolymerization on the electrode pre-coated with polyion complex.

AB - A high-sensitivity urea sensor consisting of the composite film of electropolymerized electroinactive polypyrrole (PPy) with the polyion complex containing urease (Urs) was fabricated. This sensor showed potential response to urea within 20 s by detection of pH change during enzymatic reaction with a pH-sensitive electroinactive PPy. The urea response became higher with the slope of 110 mV decade-1. This high sensitivity was attributed to the effective immobilization of the large number of Urs by electropolymerization on the electrode pre-coated with polyion complex.

KW - Biosensor

KW - Electropolymerization

KW - Polyion complex

KW - Polypyrrole

KW - Urea sensor

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High-sensitivity urea sensor based on the composite film of electroinactive polypyrrole with polyion complex

Abstract

Keywords

ASJC Scopus subject areas

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