Fluorescence anisotropy studies of orientational order of Langmuir-Blodgett multilayers

Jane D. LeGrange, Hans E. Riegler, Walter P. Zurawsky, Suzanne F. Scarlata

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Langmuir-Blodgett multilayer films of cadmium stearate labeled with 3-(7-nitrobenz-2-oxa-1,3-diazol) fluorescence probes have been fabricated and studied by fluorescence microscopy and steady state anisotropy measurements. The results indicate that there is a decrease in fluorescence anisotropy with number of layers which saturates at about 10 layers. This decrease may be modeled as a decrease in orientational order of the fluorescence probes in the multilayers. A simplified model is used to obtain values for the 〈P2〉 and 〈P4〉 order parameters as a function of thickness. 〈P2〉 is 0.4 and does not change with thickness. 〈P4〉, however, decreases from 0.1 for a monolayer to 0.04 for a 9-layer film.

Original languageEnglish (US)
Pages (from-to)101-109
Number of pages9
JournalThin Solid Films
Issue number1-2
StatePublished - May 1988

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry


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