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The influence of molecular-organization on charge transport in electrochemically prepared polypyrrole films

The influence of molecular-organization on charge transport in electrochemically prepared polypyrrole films
The influence of molecular-organization on charge transport in electrochemically prepared polypyrrole films
Letter to the editor. Electrical conductivity data is presented for two types of polypyrrole film prepared using toluene sulphonate and sulphate as the counter-ions or dopant. The films based on polypyrrole and toluene sulphonate exhibit an ordered molecular organisation in which the planes of the aromatic units lie preferentially parallel to the film surface. For such films the conductivity versus temperature data fit to a 2D variable range hopping model. In contrast, films using SO42- as the dopant show an isotropic highly disordered molecular organisation and a temperature dependence of the electrical conductivity which fits a 3D variable range hopping model. Although such models present a rather simple picture of conductivity in these complex molecular composites, they do demonstrate the strong and direct influence of the molecular organisation on their electrical transport properties.
0022-3727
1231-1234
Mitchell, G.R.
10233519-13b2-4f3f-ba9f-a47c0cfe68d6
Cywinski, R.
0881827c-e63d-4500-84ab-82c8ef6a7b82
Mondal, S.
db99b1a1-368a-4ed8-b2da-69850aea8fb1
Sutton, Simon
571c7136-1eb6-44e1-8979-ca0829469a6b
Mitchell, G.R.
10233519-13b2-4f3f-ba9f-a47c0cfe68d6
Cywinski, R.
0881827c-e63d-4500-84ab-82c8ef6a7b82
Mondal, S.
db99b1a1-368a-4ed8-b2da-69850aea8fb1
Sutton, Simon
571c7136-1eb6-44e1-8979-ca0829469a6b

Mitchell, G.R., Cywinski, R., Mondal, S. and Sutton, Simon (1989) The influence of molecular-organization on charge transport in electrochemically prepared polypyrrole films. Journal of Physics D: Applied Physics, 22 (8), 1231-1234.

Record type: Article

Abstract

Letter to the editor. Electrical conductivity data is presented for two types of polypyrrole film prepared using toluene sulphonate and sulphate as the counter-ions or dopant. The films based on polypyrrole and toluene sulphonate exhibit an ordered molecular organisation in which the planes of the aromatic units lie preferentially parallel to the film surface. For such films the conductivity versus temperature data fit to a 2D variable range hopping model. In contrast, films using SO42- as the dopant show an isotropic highly disordered molecular organisation and a temperature dependence of the electrical conductivity which fits a 3D variable range hopping model. Although such models present a rather simple picture of conductivity in these complex molecular composites, they do demonstrate the strong and direct influence of the molecular organisation on their electrical transport properties.

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Published date: 14 August 1989

Identifiers

Local EPrints ID: 413236
URI: http://eprints.soton.ac.uk/id/eprint/413236
ISSN: 0022-3727
PURE UUID: 2d4ad011-dc13-48db-aacb-36ae64145cd3

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Date deposited: 17 Aug 2017 16:31
Last modified: 30 Jul 2020 16:32

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Contributors

Author: G.R. Mitchell
Author: R. Cywinski
Author: S. Mondal
Author: Simon Sutton

University divisions

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