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The influence of the ion distribution on interfacial effects in oligoether functionalized poly( p ‐phenylene) based mixed ionic electronic conductors
Author(s) -
Wenzl F. P.,
Suess C.,
Poelt P.,
Mauthner G.,
List E. J. W.,
Bouguettaya M.,
Reynolds J. R.,
Leising G.
Publication year - 2004
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.1835
Subject(s) - trifluoromethanesulfonate , ethylene oxide , lithium (medication) , electrolyte , ionic bonding , phenylene , salt (chemistry) , x ray photoelectron spectroscopy , ionic conductivity , materials science , side chain , polymer chemistry , conjugated system , ion , chemical engineering , polymer , chemistry , copolymer , organic chemistry , medicine , electrode , engineering , catalysis , endocrinology
We report on surface composition studies of thin spin‐cast films of a polymeric mixed ionic electronic conductor (PMIEC). The polymeric constituent consists of a hydrophobic conjugated poly( p ‐phenylene) (PPP) backbone functionalized with hydrophilic oligo(ethylene oxide) (OEO) side‐chains to supply the electronically conducting conjugated polymer with an ion transporting functionality. In particular a lithium salt (lithium trifluoromethanesulfonate), the prototype salt applied in solid‐state electrolytes, was chosen for the investigations. Identification of the elements and their quantification was done by XPS for different salt concentrations in order to address the still open question of surface‐induced effects on the ion distribution in thin films of solid‐state electrolytes. No enrichment or depletion of the ionic species at the free surface could be observed for the concentrations investigated within the error of the measurement given. Copyright © 2004 John Wiley & Sons, Ltd.