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Unconventional Scaling of Electrical Conductivity Spectra for PSS-PDADMAC Polyelectrolyte Complexes

2009; American Physical Society; Volume: 102; Issue: 25 Linguagem: Inglês

10.1103/physrevlett.102.255901

1092-0145

Árpád W. Imre, Monika Schönhoff, Cornelia Cramer,

Conducting polymers and applications

For the first time, we analyze ac conductivity spectra of various dried ionically cross-linked polyelectrolyte complexes in terms of the time-temperature superposition principle. The temperature-dependent spectra of some complexes show scaling properties that are distinctly different from the behavior of all other ion-conducting materials reported so far, but in agreement with model predictions by Roling [B. Roling, Phys. Chem. Chem. Phys. 3, 5093 (2001).]. We conclude that the dc conductivity of the investigated PEC is always governed by the ${\mathrm{Na}}^{+}$ ions, even in complexes with excess of polycations and chloride anions.