New Conductive Polymeric Materials: Cofacial Assembly of Mixed Valent Metallomacrocycles.

Abstract

This paper reports on an approach to control molecular stacking interactions in low-dimensional mixed valence materials by locking partially oxidized metallomacrocycles together in a cofacial orientation. Iodine doping of the face-to-face linked oligomers (M(Pc)O)n (M = Si, Ge, Sn; Pc = phthalocyaninato) produces electrically conductive polymers (M(Pc)O)Ix n with a wide range of x stoichiometries. Resonance raman spectroscopy indicates that the iodine has oxidized the polymer chain. Polymer structure has been studied by X-ray powder diffraction, and it is possible to estimate interplanar spacings. Halogen doping of the (M(Pc)O) n materials is accompanied by electrical conductivity increases as large 1/10 to the 7th power (ohm cm); the general trend is sigma Si > or approximate sigma Ge > sigma Sn. Variable temperature conductivity and magnetic susceptibility data are reported. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 28, 1980
Accession Number
ADA081010

Entities

People

  • Bhagyashree R. Kundalkar
  • Karl F. Schoch Jr.
  • Tobin J. Marks

Organizations

  • Northwestern University

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemical Synthesis
  • Chemistry
  • Conductive Polymers
  • Crystal Structure
  • Crystals
  • Diffraction
  • Electrical Conductivity
  • Materials
  • Military Research
  • Molecules
  • New York
  • Polymers
  • Raman Spectra
  • Raman Spectroscopy
  • Single Crystals
  • Spectra
  • X Rays

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Polymer Science and Technology

Technology Areas

  • Space