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Conductivity percolation in polyiodide/polymer complexes
journal contribution
posted on 1993-08-01, 00:00 authored by Maria ForsythMaria Forsyth, D Shriver, M Ratner, D DeGroot, C KannewurfVariable-temperature four-probe conductivity measurements and Raman spectroscopy were investigated for iodine in poly(propylene oxide) (PPO) and NaI3 in PPO. The Raman spectra indicate the presence of both triiodide and polyiodide species in samples of I2-doped PPO. The conductivity of these PPO/I2 samples increased with increasing I2 concentration and reached a plateau at approximately 12 vol % iodine. Raman spectra at 20 °C indicate that, at concentrations less than 23 vol % I3-, the dominant species is the triiodide. Polymer salt complexes with varying amounts of I3- appear to display a conductivity threshold near Tg, at 0.2 vol fraction of triiodide.
History
Journal
Chemistry of materialsVolume
5Issue
8Pagination
1073 - 1077Publisher
American Chemical SocietyLocation
Washington, D.C.Publisher DOI
ISSN
0897-4756eISSN
1520-5002Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
1993, American Chemical SocietyUsage metrics
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