Charge delocalization in poly(o-toluidine) fibers

Y. Z. Wang, J. Joo, C. H. Hsu, J. P. Pouget, A. J. Epstein

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

We report the results of temperature-dependent conductivity σdc(T), thermoelectric power S(T), microwave dielectric constant εmw(T) (f=6.5 GHz) measurements, and x-ray diffraction studies for the camphor-sulfonic-acid-doped poly(o-toluidine) fibers prepared in m-cresol (POT-CSA). Compared to previously studied hydrochloric-acid-doped poly(o-toluidine) samples, POT-CSA fibers show significantly higher σdc with a much weaker T dependence, much larger εmw, and dramatically different temperature dependence of thermoelectric power with S(T)=A+BT, where A<0 and B>0. These results demonstrate the formation of the delocalized electronic state in the poly(o-toluidine) system, despite the asymmetry of the repeat unit.

Original languageEnglish
Pages (from-to)16811-16816
Number of pages6
JournalPhysical Review B
Volume50
Issue number23
DOIs
Publication statusPublished - 1994
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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