Enhanced pH stability of conducting polyaniline by reprotonation with perfluorooctanesulfonic acid

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Patrycja Bober, Tom Lindfors, Markus Pesonen, Jaroslav Stejskal
Förläggare: ELSEVIER SCIENCE SA
Publiceringsår: 2013
Tidskrift: Synthetic Metals
Tidskriftsakronym: SYNTHETIC MET
Volym: 178
Artikelns första sida, sidnummer: 52
Artikelns sista sida, sidnummer: 55
Antal sidor: 4
ISSN: 0379-6779


Abstrakt

Electrically conducting polyaniline (PANI) films have been prepared by reprotonation of the emeraldine base form of PANI with perfluorooctanesulfonic acid (PFOS). The reprotonated PANI-PFOS films have been characterized by UV-vis spectroscopy, water contact angle and electrical conductivity measurements. We report that reprotonation of PANI base with PFOS increased the water contact angle from 25 degrees to 105 degrees. The hydrophobic PANI-PFOS maintained a good level of conductivity even at pH = 8 (sigma = 1.0 x 10(-2) S cm(-1)) whereas the PANI hydrochloride lost its conductivity at this pH (sigma = 5.0 x 10(-9) S cm(-1)). Long-term stability tests showed that the reprotonated PANI-PFOS film remained in its conducting form for three month. (c) 2013 Elsevier B.V. All rights reserved.


Nyckelord

Emeraldine salt, Hydrophobicity, Perfluorooctanesulfonic acid, pH stability, Polyaniline, Reprotonation

Senast uppdaterad 2019-14-11 vid 03:01