Fractal interpretation of non-Lorentzian persistent hole shapes in organic glasses

Sadao Uemura, Masashi Okada, Kazi Monowar Abedin, Hiroki Nakatsuka

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Non-Lorentzian persistent hole shapes of chromophore in organic glasses have been explained by considering fractal structures of the organic glass hosts. The measured hole shape is well reproduced by the Fourier transform of the non-exponentially decaying function of τ, exp(-cTτD/3), where c is a constant, T is the temperature, and D is the fractal dimension of the glass host. The fractal dimension D obtained by fitting the theoretical curve to the observed hole shape of oxazine 1 in polyvinyl alcohol glass is 2.3 ± 0.1 and that of oxazine 1 in ethanol glass is 2.9 ± 0.1. These values of fractal dimension are in good agreement with the values obtained in our previous experiment in both glass hosts doped with a different chromophore, HITC.

Original languageEnglish
Pages (from-to)193-196
Number of pages4
JournalChemical Physics Letters
Volume189
Issue number2
DOIs
Publication statusPublished - Jan 31 1992

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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