Conductivity percolation in polyiodide/polymer complexes

Journal Article · Sun Aug 01 04:00:00 EDT 1993 · Chemistry of Materials; (United States)

DOI:https://doi.org/10.1021/cm00032a008· OSTI ID:7072598

Forsyth, M; Shriver, D F; Ratner, M A; DeGroot, D C; Kannewurf, C R ^[1]

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1. Northwestern Univ., Evanston, IL (United States)

Variable-temperature four-probe conductivity measurements and Raman spectroscopy were investigated for iodine in poly(propylene oxide) (PPO) and NaI[sub 3] in PPO. The Raman spectra indicate the presence of both triiodide and polyiodide species in samples of I[sub 2]-doped PPO. The conductivity of these PPO/I[sub 2] samples increased with increasing I[sub 2] concentration and reached a plateau at approximately 12 vol % iodine. Raman spectra at 20 [degrees]C indicate that, at concentrations less than 23 vol% I[sup [minus][sub 3]], the dominant species is the triiodide. Polymer salt complexes with varying amounts of I[sup [minus][sub 3]] appear to display a conductivity threshold near T[sub g], at 0.2 vol fraction of triiodide. 6 figs., 1 tab.

• DOE Contract Number: FG02-85ER45220
• OSTI ID: 7072598
• Journal Information: Chemistry of Materials; (United States), Journal Name: Chemistry of Materials; (United States) Vol. 5:8; ISSN CMATEX; ISSN 0897-4756
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ANIONS
CHARGED PARTICLES
COMPLEXES
CONCENTRATION RATIO
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EQUILIBRIUM
IODINE COMPLEXES
IONS
LASER SPECTROSCOPY
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PHYSICAL PROPERTIES
POLYMERS
POLYOLEFINS
RAMAN SPECTROSCOPY
SPECTROSCOPY