Asymmetry in molecular ordering in the nematic phase: DMR study

Article abstract of DOI:10.1063/1.454209

Deuterium nuclear magnetic resonance (2H-NMR) was performed on the rigid perdeuterated fluorene segment of the compound 2-fluorenyl-4'-tetradecyloxy benzoate (FLOC 14-d₉) tounambiguously measure the order parameter U which reflects the degree of asymmetric ordering of the molecule in the nematic liquid crystalline phase.Measurements of U showed this parameter to be finite at all temperatures in the nematic phase indicative of the uniaxial phase U₂ described in the Allender-Lee generalized Landau theory.Mixtures of FLOC 14-d₉ with compounds consisting of molecules more cylindrical in shape were also studied to examine their effect on the parameter U.Other parameters such as the degree of order S and the orientation of the principal axes of the Maier-Saupe order matrix were measured and are discussed.

Full text of DOI:10.1063/1.454209

Asymmetry in molecular ordering in the nematic phase: DMR study
BaoGang Wu, Barbara Ziemnicka, and J. William Doane
Citation: The Journal of Chemical Physics 88, 1373 (1988); doi: 10.1063/1.454209
View online: http://dx.doi.org/10.1063/1.454209
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/88/2?ver=pdfcov
Published by the AIP Publishing
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
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129.22.67.7 On: Mon, 01 Dec 2014 23:13:20

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