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Influence of lateral branches on the properties of liquid‐crystalline 1,4‐Bis‐[4‐n‐hexylbenzoyloxy]‐2‐subst.‐benzenes (I).: measurement of density, viscosity and optical anisotropy
Author(s) -
Hauser A.,
Rettig R.,
Selbmann Ch.,
Weissflog W.,
Wulf J.,
Demus D.
Publication year - 1984
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170190218
Subject(s) - anisotropy , viscosity , liquid crystal , isotropy , branching (polymer chemistry) , ethylbenzene , optical anisotropy , optical density , chemistry , refractive index , materials science , optics , benzene , organic chemistry , composite material , physics , optoelectronics
8 compounds of the substance class of the 1,4‐bis‐[4‐n‐hexylbenzoyloxy]‐2‐subset.‐benzenesand additionally 1,4‐bis‐[4‐n‐hexyleyclohexanoyloxy]‐2‐ethylbenzene were sythesized and density, viscosity and optical refractive indices were measured in the nematic and isotropic state. The lateral branching causes decrease of the melting and clearing temperatures, diminishing of the optical anisotropy and order parameter, but increase of the viscosity.