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Interface and ion-induced optoelectronic effects in thin films of poly( p-phenylene)s functionalised with ion-transporting side chains

We report on investigations of thin films of homopolymers and copolymers consisting of a conjugated poly( p-phenylene) (PPP) backbone and oligo(ethylene oxide) (OEO) side chains of varying chain length in order to supply a conjugated backbone with an ion-transporting functionality. The optical prope...

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Bibliographic Details
Published in:Thin solid films 2003-06, Vol.433 (1), p.287-291
Main Authors: Wenzl, F.P., Mauthner, G., Collon, M., List, E.J.W., Suess, C., Haase, A., Jakopic, G., Somitsch, D., Knoll, P., Bouguettaya, M., Reynolds, J.R., Leising, G.
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Language:English
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Summary:We report on investigations of thin films of homopolymers and copolymers consisting of a conjugated poly( p-phenylene) (PPP) backbone and oligo(ethylene oxide) (OEO) side chains of varying chain length in order to supply a conjugated backbone with an ion-transporting functionality. The optical properties of these polymeric mixed ionic–electronic conductors (PMIECs) reveal a response upon complexation of the OEO side chains with an alkali metal salt (lithium triflate). In addition, the rather polar nature of the OEO side chains and the non-polar nature of the PPP backbone can be applied to control the polymer/substrate interfacial properties. These topics were investigated by means of UV/VIS/NIR absorption measurements, along with photoinduced absorption spectroscopy. Infrared and Raman spectroscopy complemented this work to determine the amount of ion dissociation.
ISSN:0040-6090
1879-2731
DOI:10.1016/S0040-6090(03)00354-7