Contact
    Start Publications Enhanced pH stability of conducting polyaniline by ...
    ←  Publication Finder
    Attension

    Enhanced pH stability of conducting polyaniline by reprotonation with perfluorooctanesulfonic acid

    Year: 2013

    Journal: Synthetic Metals, Volume 178, 15 August 2013, Pages 52–55, 20131119

    Authors: Patrycja Bober 1, Tom Lindfors 1, Markus Pesonen 2, Jaroslav Stejskal 3

    Organizations: 1: Åbo Akademi University, Department of Chemical Engineering, Process Chemistry Centre, Laboratory of Analytical Chemistry, FI-20500 Turku, Finland, 2: Åbo Akademi University, Department of Natural Sciences, Physics, Center for Functional Materials, FI-20500 Turku, Finland, 3: Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 162 06 Prague 6, Czech Republic

    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° to 105°. The hydrophobic PANI-PFOS maintained a good level of conductivity even at pH = 8 (σ = 1.0 × 10−2 S cm−1) whereas the PANI hydrochloride lost its conductivity at this pH (σ = 5.0 × 10−9 S cm−1). Long-term stability tests showed that the reprotonated PANI-PFOS film remained in its conducting form for three month.