New conductive polymeric materials: Cofacial assembly of mixed valent metallomacrocycles

Tobin J Marks, Karl F. Schoch, Bhagyashree R. Kundalkar

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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]Ixn 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 107 (ohm cm)-1; the general trend is σSi {greater-than or approximate} σGe > σSn. Variable temperature conductivity and magnetic susceptibility data are reported.

Original languageEnglish
Pages (from-to)337-347
Number of pages11
JournalSynthetic Metals
Volume1
Issue number3
DOIs
Publication statusPublished - 1980

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

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