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Molecular Crystals and Liquid Crystals Volume 110, 1984 - Issue 1-4
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Original Articles

Diacetylenic Liquid Crystals: A Systematic Investigation of the Homologous Series of 4, 41 - Dialkanoyloxydiphenyldiacetylenes

Y. Ozcayir Polymer Program, Department of Chemistry University of Lowell, Lowell, MA, 01854
,
J. Asrar Monsanto Polymer Products Co., 730 Worcester St., Springfield, MA, 01151; Polymer Program, Department of Chemistry University of Lowell, Lowell, MA, 01854
&
A. Blumstein Polymer Program, Department of Chemistry University of Lowell, Lowell, MA, 01854
Pages 263-276 | Published online: 21 Apr 2011
 
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Abstract

The homologous series of 4, 41 -dialkanoyloxydiphenyldiacetylenes

with n ranging from zero to ten have been prepared. Optical microscopy, differential scanning calorimetry and X-ray diffraction have been used to study the mesomorphic behavior of these compounds. All homologs with n=1-7 are liquid crystals having nematic phases. In addition to nematic phases, these esters have extensive solid-state polymorphism. The transition enthalpies and entropies have also been calculated.

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Related Research Data

Phase Transition Enthalpy Measurements of Organic and Organometallic Compounds and Ionic Liquids. Sublimation, Vaporization, and Fusion Enthalpies from 1880 to 2015. Part 2. C11–C192
Source: (:unav)
1,4-BIS[n-(N,N-DIMETHYLAMINO)PHENYL]BUTA-1,3-DIYNES
Source: (:unav)
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