NEXAFS measurements of the molecular ordering in the boundary layers of liquid 
crystalline free standing films

Fortmeier, P.; Risse, Thomas; Stegemeyer, H.; Freund, Hans-Joachim

doi:10.1080/02678292.1999.11509455

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NEXAFS measurements of the molecular ordering in the boundary layers of liquid crystalline free standing films

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Risse, Thomas
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Freund, Hans-Joachim
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Citation

Fortmeier, P., Risse, T., Stegemeyer, H., & Freund, H.-J. (1999). NEXAFS measurements of the molecular ordering in the boundary layers of liquid crystalline free standing films. Liquid Crystals, 26(11), 1713-1716. doi:10.1080/02678292.1999.11509455.

Cite as: https://hdl.handle.net/21.11116/0000-0009-0533-8

Abstract

By near edge X-ray absorption fine-structure (NEXAFS) spectroscopy a finite molecular tilt angle in the surface layer of a free standing film in the liquid crystalline smectic A phase of C7 was directly detected. Analysis of the angular dependent intensities of the oxygen K edge NEXAFS spectra leads to an average tilt angle of the molecules in the surface layer of about 34°, which is characteristic for the bulk smectic C* phase of C7.