Interaction of the europium chloride and polyaniline: formation of a novel conductive complex

A novel polyaniline (PANI):EuCl 3 complex has been prepared and its conductivity, electronic absorption and luminescent spectra were studied. Changes in electronic absorption spectra showed that the europium ions possess both oxidative and pseudoprotonation activity with respect to the polymer chain...

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Bibliographic Details
Published in:Synthetic metals 2002-12, Vol.132 (1), p.87-92
Main Authors: Dimitriev, O.P, Kislyuk, V.V
Format: Article
Language:English
Subjects:
Charge transfer
Conductivity
Europium chloride
Polyaniline (PANI)
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Summary:A novel polyaniline (PANI):EuCl 3 complex has been prepared and its conductivity, electronic absorption and luminescent spectra were studied. Changes in electronic absorption spectra showed that the europium ions possess both oxidative and pseudoprotonation activity with respect to the polymer chains in solution and solid films, respectively. Photoluminescence (PL) spectra showed that the charge transfer from the polymer to Eu 3+ ions occurs and that there are two types of europium luminescent centers in the disordered polymer matrix. Electrical conductivity of the composite films with a stoichiometric ratio of PANI to the europium salt was found to be unexpectedly high and comparable with that of the protonic acid doped PANI. Mechanisms of the PANI:EuCl 3 complex formation are discussed.
ISSN:0379-6779
1879-3290
DOI:10.1016/S0379-6779(02)00222-9