Journal ArticleDOI
Liquid crystals of disc-like molecules
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Based on the x-ray data, a structure is proposed in which the discs are stacked one on top of the other in columns that constitute a hexagonal arrangement, but the spacing between the discs in each column is irregular as discussed by the authors.Abstract:
Thermotropic mesomorphism has been observed in pure compounds consisting of simple disc-like molecules, viz., benzene-hexa-n-alkanoates. Thermodynamic, optical and x-ray studies indicate that the mesophase is a highly ordered lamellar type of liquid crystal. Based on the x-ray data, a structure is proposed in which the discs are stacked one on top of the other in columns that constitute a hexagonal arrangement, but the spacing between the discs in each column is irregular. Thus the structure has translational periodicity in two dimensions and liquid-like disorder in the third.read more
Citations
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Journal ArticleDOI
Development of structural complexity by liquid-crystal self-assembly.
TL;DR: New exciting soft-matter structures distinct from the usually observed nematic, smectic, and columnar phases are presented, including multicompartment and cellular structures, periodic and quasiperiodic arrays of spheres, and new emergent properties, such as ferroelctricity and spontaneous achiral symmetry-breaking.
Journal ArticleDOI
Discotic liquid crystals
S Chandrasekhar,G S Ranganath +1 more
TL;DR: In this article, the detailed structures of the various discotic phases and some of their important physical properties are described. But they are classified into two distinct categories, the columnar and the nematic.
Journal ArticleDOI
Discotic liquid crystals. A brief review
TL;DR: In this paper, the authors summarized the progress in the field of discotic liquid crystals, with emphasis on experimental results rather than theoretical developments, including metallo-mesogens and discotic polymers.
Journal ArticleDOI
Computer simulation studies of anisotropic systems. XXVI. Monte Carlo investigations of a Gay–Berne discotic at constant pressure
TL;DR: In this paper, a series of constant pressure Monte Carlo simulations of model discotic molecules are presented. But, the simulations are restricted to the Gay-Berne potential, which is an anisotropic version of a shifted Lennard-Jones potential, to model the interactions between the disks.
Journal ArticleDOI
Computer simulation studies of anisotropic systems: XXIII. The Gay-Berne discogen† Presented at the European Liquid Crystal Conference, Flims, Switzerland, 8–12 March 1993.
TL;DR: In this article, a suitable parametrization for Gay-Berne disc was proposed and the results of some constant volume molecular dynamics simulations were reported, showing that the structure of the columnar phase depends critically on the density used in the simulation and the difference in structure of columnar phases is due to the increased interdigitation between the columns at the higher density.
References
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Journal ArticleDOI
Liquid crystals of disc-like molecules
TL;DR: Based on the x-ray data, a structure is proposed in which the discs are stacked one on top of the other in columns that constitute a hexagonal arrangement, but the spacing between the discs in each column is irregular as discussed by the authors.
Journal ArticleDOI
The formation of graphitizing carbons from the liquid phase
J.D. Brooks,G.H. Taylor +1 more
TL;DR: The formation of graphitizing low-temperature carbons by solidification from a liquid phase proceeds via the separation of a mesophase having properties similar to those of liquid crystals.
Journal ArticleDOI
The Problems of Polymorphism in Liquid Crystals
H. Sackmann,D. Demus +1 more
TL;DR: In this paper, the actual position of the system of liquid crystalline modifications is discussed, which is based on the relations of miscibility of the liquid crystal modifications and on their texture.
Journal ArticleDOI
On a “cholesteric” phase in disc-like mesogens
TL;DR: In this paper, the first evidence of a cholesteric phase in disc-like mesogens was found in a hexabenzoate of triphenylene, and it was shown that triphenylenes are able to twist the ND nematic phase of a hexabelabeled triphenylon.