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An XRD/XPS approach to structural change in conducting PPy

journal contribution
posted on 01.05.1999, 00:00 authored by K Cheah, Maria ForsythMaria Forsyth, V Truong
Electrochemically synthesised polypyrrole (PPy) with 1,5 naphthalene disulfonate (1,5-NDS) counterions treated with simple acid and base was characterised using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The as synthesised film was found to be amorphous with short-range ordering in the polymer backbone. Ordering was lost after thermal ageing with evidence of counterion degradation. Base treatment lead to loss of ordering as well as dedoping of the polymer whereas acid treatment at high temperature increases short range ordering. Conductivity was also increased dramatically with evidence of ion exchange. Ordering induced by the treatment was maintained even after thermal ageing.

History

Journal

Synthetic metals

Volume

101

Issue

1-3

Pagination

19 - 19

Publisher

Elsevier S.A.

Location

Basel, Switzerland

ISSN

0379-6779

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

1999, Elsevier Science S.A.