Journal ArticleDOI
Cholesteric states of micellar solutions
Keith Radley,Alfred Saupe +1 more
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TLDR
In this paper, the effects of optically active compounds on amphiphilic nematics are reported and the results are analyzed on the basis of intermolecular interactions and an explanation is proposed for the observed differences in twisting power.Abstract:
The effects of optically active compounds on amphiphilic nematics are reported. The following systems have been studied : (1) caesium decylsulphate, decanol, water plus tartaric acid ; (2) ammonium decylsulphate, ammonium sulphate, decanol, water plus brucine sulphate ; and (3) decylammonium chloride, water plus cholesterol. Phase transitions to cholesteric states are induced by the optically active compounds in all systems. Brucine sulphate has the highest twisting power ; tartaric acid the lowest. The results are analysed on the basis of intermolecular interactions and an explanation is proposed for the observed differences in twisting power.read more
Citations
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Are “nematic” amphiphilic liquid crystalline mesophases thermodynamically stable?
TL;DR: In this article, the existence of a thermodynamically independent nematic amphiphilic mesophase in mixtures of perfluoro-octanoate and water between 37.0 to 87.0 K at 1 atmosphere pressure.
Patent
Polarizer constructions and display devices exhibiting unique color effects
Hassan Sahouani,Kim M. Vogel,Keith M. Kotchick,Mark B. O'neill,William A. Hibbard,Robert S. Moshrefzadeh +5 more
TL;DR: In this article, a polarizer construction that includes a reflective polarizer disposed on a first side of the construction to transmit light having one polarization and reflect light having an orthogonal polarization is described.
Journal ArticleDOI
Steric and temperature control of enantiopurity of chiral mesoporous silica
Huibin Qiu,Shuguang Wang,Wanbin Zhang,Kazutami Sakamoto,Osamu Terasaki,Yoshihisa Inoue,Shunai Che +6 more
TL;DR: In this article, the authors employed a series of chiral amphiphilic molecules derived from nine different amino acids as te... to elucidate the factors and mechanisms that control the chiral mesoporous silica formation.
Patent
Dual color guest-host polarizers and devices containing guest-host polarizers
TL;DR: In this article, a guest-host polarizer is disclosed that includes a host matrix, one or more first guest dyes disposed in the host matrix and oriented to absorb a first portion of visible light having a first polarization state.
Journal ArticleDOI
Theory for cholesteric ordering in lyotropic liquid crystals
TL;DR: In this article, the chiral dispersion interaction between macromolecules in the solvent was investigated and the results of the molecular statistical theory were reported, in particular the expression for the helical pitch as a function of temperature on the solvent dielectric constant was used to interpret the experimental data.
References
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Journal ArticleDOI
Rotatory power and other optical properties of certain liquid crystals
TL;DR: In this paper, it is shown how these properties can be explained by the assumption that the molecules are arranged in a special way, so that the electrical axes rotate screw-like.
Journal ArticleDOI
Magnetically oriented lyotropic luquid crystalline phases
Journal ArticleDOI
Effect of counterion substitution on the type and nature of nematic lyotropic phases from nuclear magnetic resonance studies
Journal ArticleDOI
Pitch–concentration relationships in multicomponent liquid crystal mixtures
C. S. Bak,M. M. Labes +1 more
TL;DR: In this paper, the authors derived the variation of helical pitch in multicomponent liquid crystal mixtures using the concept of the long-range distortions induced by chiral molecules in a nematic matrix.