Theory of order-disorder transitions and optical properties of flexible conjugated polymers

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A general microscopic statistical mechanical theory of order-disorder phase transitions of flexible conjugated polymers in dilute solution is briefly reviewed, and applied to interpret recent experiments on alkyl-substituted polysilanes. The dependence of the observed thermochromic phenomena on solvent, substituent structure, and degree of polymerization are contrasted with the theoretical predictions. Excellent qualitative, and nearly quantitative, agreement between theory and experiment is found, thereby lending significant support to both the single chain mechanism of the solution order-disorder transitions and the fundamental importance of conformation-dependent polymer-solvent dispersion interactions.

Original languageEnglish (US)
Pages (from-to)565-572
Number of pages8
JournalSynthetic Metals
Issue number1-2
StatePublished - Jan 30 1989
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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