Areal inhomogeneities in vapor doped polyaniline films

J. P. Long; S. E. Bullock; L. J. Buckley; J. N. Russell

doi:10.1016/S0379-6779(01)00578-1

Areal inhomogeneities in vapor doped polyaniline films

J. P. Long, S. E. Bullock, L. J. Buckley, J. N. Russell

Extreme Environment Materials Process

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8 Scopus citations

Abstract

The conductivity of an initially insulating emeraldine base film can be controlled by adjusting its time of exposure to the vapor of a dopant solution. Before saturation doping is achieved, however, large nonuniformities in resistivity are measured in a spatial pattern related to the geometry of the sample and its support fixtures. Comparison of the spatial measurements to a gas-phase mass-transport analysis finds that the nonuniformity is attributable to a spatially varying flux of dopant incident on the sample from the vapor. The nonuniform flux is caused by diffusion-limited gas-transport of dopant vapor in response to uptake by the sample.

Original language	English
Pages (from-to)	317-323
Number of pages	7
Journal	Synthetic Metals
Volume	126
Issue number	2-3
DOIs	https://doi.org/10.1016/S0379-6779(01)00578-1
State	Published - Feb 14 2002

Keywords

Doped polymers
Emeraldine base
Optical spectroscopy
Polyaniline
Polymer processing
Sheet resistance

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10.1016/S0379-6779(01)00578-1

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title = "Areal inhomogeneities in vapor doped polyaniline films",

abstract = "The conductivity of an initially insulating emeraldine base film can be controlled by adjusting its time of exposure to the vapor of a dopant solution. Before saturation doping is achieved, however, large nonuniformities in resistivity are measured in a spatial pattern related to the geometry of the sample and its support fixtures. Comparison of the spatial measurements to a gas-phase mass-transport analysis finds that the nonuniformity is attributable to a spatially varying flux of dopant incident on the sample from the vapor. The nonuniform flux is caused by diffusion-limited gas-transport of dopant vapor in response to uptake by the sample.",

keywords = "Doped polymers, Emeraldine base, Optical spectroscopy, Polyaniline, Polymer processing, Sheet resistance",

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AU - Long, J. P.

AU - Bullock, S. E.

AU - Buckley, L. J.

AU - Russell, J. N.

PY - 2002/2/14

Y1 - 2002/2/14

N2 - The conductivity of an initially insulating emeraldine base film can be controlled by adjusting its time of exposure to the vapor of a dopant solution. Before saturation doping is achieved, however, large nonuniformities in resistivity are measured in a spatial pattern related to the geometry of the sample and its support fixtures. Comparison of the spatial measurements to a gas-phase mass-transport analysis finds that the nonuniformity is attributable to a spatially varying flux of dopant incident on the sample from the vapor. The nonuniform flux is caused by diffusion-limited gas-transport of dopant vapor in response to uptake by the sample.

AB - The conductivity of an initially insulating emeraldine base film can be controlled by adjusting its time of exposure to the vapor of a dopant solution. Before saturation doping is achieved, however, large nonuniformities in resistivity are measured in a spatial pattern related to the geometry of the sample and its support fixtures. Comparison of the spatial measurements to a gas-phase mass-transport analysis finds that the nonuniformity is attributable to a spatially varying flux of dopant incident on the sample from the vapor. The nonuniform flux is caused by diffusion-limited gas-transport of dopant vapor in response to uptake by the sample.

KW - Doped polymers

KW - Emeraldine base

KW - Optical spectroscopy

KW - Polyaniline

KW - Polymer processing

KW - Sheet resistance

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VL - 126

SP - 317

EP - 323

JO - Synthetic Metals

JF - Synthetic Metals

IS - 2-3

ER -

Areal inhomogeneities in vapor doped polyaniline films

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