Sensing Behavior of the Polypyrrole and Polyaniline Sensor for Several Volatile Organic Compounds

H. R. Hwang; J. G. Roh; D. D. Lee; J. O. Lim; J. S. Huh

doi:10.1007/BF03027048

Sensing Behavior of the Polypyrrole and Polyaniline Sensor for Several Volatile Organic Compounds

H. R. Hwang, J. G. Roh, D. D. Lee, J. O. Lim, J. S. Huh

Kyungpook National University

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

30 Scopus citations

Abstract

The sensing characteristics of conducting polymers to several volatile organic compounds were investigated with a UV-Vis-NIR spectrophotometer, dynamic contact angles measurement and scanning probe microscopy (SPM). When gases were absorbed, the polypyrrole (PPy) and polyaniline (PANi) exhibited positive and negative sensitivity, respectively. The PPy-based sensor demonstrated decreasing conductivity while the PANi sensor exhibited increasing conductivity when the polarity of the molecules absorbed increased. PPy film has an hydrophilic property while the PANi film a hydrophobic one. These changes in polymer conductivity, it is speculated, are due to the interruption of free carrier movement or the generation of polarons by the absorbed molecules.

Original language	English
Pages (from-to)	287-291
Number of pages	5
Journal	Metals and Materials International
Volume	9
Issue number	3
DOIs	https://doi.org/10.1007/BF03027048
State	Published - Jun 2003

Keywords

Polyaniline
Polypyrrole
Property
Sensor
VOC

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10.1007/BF03027048

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title = "Sensing Behavior of the Polypyrrole and Polyaniline Sensor for Several Volatile Organic Compounds",

abstract = "The sensing characteristics of conducting polymers to several volatile organic compounds were investigated with a UV-Vis-NIR spectrophotometer, dynamic contact angles measurement and scanning probe microscopy (SPM). When gases were absorbed, the polypyrrole (PPy) and polyaniline (PANi) exhibited positive and negative sensitivity, respectively. The PPy-based sensor demonstrated decreasing conductivity while the PANi sensor exhibited increasing conductivity when the polarity of the molecules absorbed increased. PPy film has an hydrophilic property while the PANi film a hydrophobic one. These changes in polymer conductivity, it is speculated, are due to the interruption of free carrier movement or the generation of polarons by the absorbed molecules.",

keywords = "Polyaniline, Polypyrrole, Property, Sensor, VOC",

author = "Hwang, {H. R.} and Roh, {J. G.} and Lee, {D. D.} and Lim, {J. O.} and Huh, {J. S.}",

year = "2003",

month = jun,

doi = "10.1007/BF03027048",

language = "English",

volume = "9",

pages = "287--291",

journal = "Metals and Materials International",

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publisher = "Korean Institute of Metals and Materials",

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T1 - Sensing Behavior of the Polypyrrole and Polyaniline Sensor for Several Volatile Organic Compounds

AU - Hwang, H. R.

AU - Roh, J. G.

AU - Lee, D. D.

AU - Lim, J. O.

AU - Huh, J. S.

PY - 2003/6

Y1 - 2003/6

N2 - The sensing characteristics of conducting polymers to several volatile organic compounds were investigated with a UV-Vis-NIR spectrophotometer, dynamic contact angles measurement and scanning probe microscopy (SPM). When gases were absorbed, the polypyrrole (PPy) and polyaniline (PANi) exhibited positive and negative sensitivity, respectively. The PPy-based sensor demonstrated decreasing conductivity while the PANi sensor exhibited increasing conductivity when the polarity of the molecules absorbed increased. PPy film has an hydrophilic property while the PANi film a hydrophobic one. These changes in polymer conductivity, it is speculated, are due to the interruption of free carrier movement or the generation of polarons by the absorbed molecules.

AB - The sensing characteristics of conducting polymers to several volatile organic compounds were investigated with a UV-Vis-NIR spectrophotometer, dynamic contact angles measurement and scanning probe microscopy (SPM). When gases were absorbed, the polypyrrole (PPy) and polyaniline (PANi) exhibited positive and negative sensitivity, respectively. The PPy-based sensor demonstrated decreasing conductivity while the PANi sensor exhibited increasing conductivity when the polarity of the molecules absorbed increased. PPy film has an hydrophilic property while the PANi film a hydrophobic one. These changes in polymer conductivity, it is speculated, are due to the interruption of free carrier movement or the generation of polarons by the absorbed molecules.

KW - Polyaniline

KW - Polypyrrole

KW - Property

KW - Sensor

KW - VOC

UR - http://www.scopus.com/inward/record.url?scp=1842525022&partnerID=8YFLogxK

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DO - 10.1007/BF03027048

M3 - Article

AN - SCOPUS:1842525022

SN - 1598-9623

VL - 9

SP - 287

EP - 291

JO - Metals and Materials International

JF - Metals and Materials International

IS - 3

ER -

Sensing Behavior of the Polypyrrole and Polyaniline Sensor for Several Volatile Organic Compounds

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Keywords

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