- Mesomorphic Properties of Some 4,4'-Alkyl and Alkoxy Disubstituted Phenylbenzoates
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A variety of new 4,4'-disubstituted phenylbenzoates with one and/or both substituents as alkyl (R) or alkoxy (RO) were prepared and their mesomorphic (liquid crystalline) properties determined for later use as standards for comparison with mesomorphic properties in other new 4,4'-disubstituted phenylbenzoates.Other esters of this type which had been previously reported, were prepared for physical studies of their mesophases and found to have different mesomorphic properties than those reported earlier.Still others were prepared to identify phases which were not determined previously.This paper presents new mesomorphic properties along with a comparison of the NMR spectra for the four possible analogs of these esters (R-R, R-OR), RO-R, RO-OR).Keywords: phenylbenzoates, mesogens, liquid crystals, NMR
- Neubert, Mary E.,Jirousek, Michael R.,Hanlon, Carol A.
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p. 223 - 234
(2007/10/02)
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- RECHERCHES SUR LES SUBSTANCES MESOGENES-VIII; PREPARATION ET PROPERTIES MESOMORPHES DE SERIES ISOMETRIQUES
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The synthesis and the mesomorphic properties of various series of isometric mesogenic compounds are described.It is confirmed that isometric mesogenic molecules may be nematogenic and/or smectogenic according to the position of the polar rigid core.
- Malthete, Jacques,Canceill, Josette,Gabard, Jacqueline,Jacques, Jean
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p. 2815 - 2821
(2007/10/02)
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