An investigation of the properties of novel, poly(pyrrole)-based conducting polymers
An investigation of the properties of novel, poly(pyrrole)-based conducting polymers
A series of n-alkanephosphonic acids have been synthesised using the Arbusov and Michaelis-Becker reactions. Poly(pyrrole) conducting polymers incorporating anions of these acids as dopants have been prepared by electropolymerisation. The resulting films were found to be more resistive than the analogous n-alkanesulfonate series of polymers, a minimum is found for a chain length of 7. Electrochemical characterisation in KCl electrolyte and in the solid-state has provided a valuable insight into the ion-movement processes which occur during redox cycling. X-ray diffraction, reflectance FTIR, scanning electron microscopy and solid-state phosphorus NMR have also yielded important structural information about this series of polymers.
The n-alkanedisulfonate dipotassium salts, where n = 8-10, 12, have also been prepared, together with p-xylene-α,α' -disulfonate, and used as dopants for poly(pyrrole)s. Preliminary characterisation using electrochemistry and X-ray diffraction shows that these films have properties similar to the phosphonate series, but with some interesting features of their own.
Poly(pyrrole)/decanephosphonic acid modified-electrodes have also been used to study the redox electrochemistry of some catechol derivatives. This electrode has been shown to enhance the electrochemistry observed because of its increased surface area and electrocatalytic activity. The kinetics of the catechol oxidation have also been investigated using rotating disk electrodes.
University of Southampton
1998
Duke, Andrew James
(1998)
An investigation of the properties of novel, poly(pyrrole)-based conducting polymers.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
A series of n-alkanephosphonic acids have been synthesised using the Arbusov and Michaelis-Becker reactions. Poly(pyrrole) conducting polymers incorporating anions of these acids as dopants have been prepared by electropolymerisation. The resulting films were found to be more resistive than the analogous n-alkanesulfonate series of polymers, a minimum is found for a chain length of 7. Electrochemical characterisation in KCl electrolyte and in the solid-state has provided a valuable insight into the ion-movement processes which occur during redox cycling. X-ray diffraction, reflectance FTIR, scanning electron microscopy and solid-state phosphorus NMR have also yielded important structural information about this series of polymers.
The n-alkanedisulfonate dipotassium salts, where n = 8-10, 12, have also been prepared, together with p-xylene-α,α' -disulfonate, and used as dopants for poly(pyrrole)s. Preliminary characterisation using electrochemistry and X-ray diffraction shows that these films have properties similar to the phosphonate series, but with some interesting features of their own.
Poly(pyrrole)/decanephosphonic acid modified-electrodes have also been used to study the redox electrochemistry of some catechol derivatives. This electrode has been shown to enhance the electrochemistry observed because of its increased surface area and electrocatalytic activity. The kinetics of the catechol oxidation have also been investigated using rotating disk electrodes.
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Published date: 1998
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Local EPrints ID: 463216
URI: http://eprints.soton.ac.uk/id/eprint/463216
PURE UUID: 850c4042-89da-4e28-b7e3-1874a7a42f14
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Date deposited: 04 Jul 2022 20:47
Last modified: 04 Jul 2022 20:47
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Author:
Andrew James Duke
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