Electrooptical properties of liquid-crystalline physical gels: a new oligo(amino acid) gelator for light scattering display materials

2002 ◽  
Vol 12 (8) ◽  
pp. 2197-2201 ◽  
Author(s):  
Norihiro Mizoshita ◽  
Yuki Suzuki ◽  
Kenji Kishimoto ◽  
Kenji Hanabusa ◽  
Takashi Kato
Keyword(s):  
Amino Acid ◽  
Light Scattering ◽  
Liquid Crystalline ◽  
Electrooptical Properties

Theoretical Studies of the Physical Properties of Rodlike and Related Polymers

1988 ◽  
Vol 134 ◽  
Author(s):  
W. J. Welsh ◽  
J. E. Mark ◽  
Y. Yang ◽  
G. P. Das
Keyword(s):  
High Performance ◽  
Liquid Crystalline ◽  
Theoretical Work ◽  
Environmental Resistance ◽  
New Class ◽  
Protonated Forms ◽  
New Type ◽  
Electrooptical Properties ◽  
Cis And Trans ◽  
Strong Acids

ABSTRACTThis review focuses on a new type of para-catenated aromatic polymer being used in the preparation of high-performance films and fibers of exceptional strength, thermal stability, and environmental resistance, including inertness to essentially all common solvents. Polymers of this type include the cis- and trans-poly(p-phenylene benzobisoxazole) (PBO), the cis- and trans-forms of the corresponding poly(pphenylene benzobisthiazole) (PBT), and the structurally similar poly(5,5ʹ-bibenzoxazole-2.2ʹ-diyl-l,3-phenylene) (AAPBO) and poly(2,5-benzoxazole) (ABPBO) and their sulfurcontaining analogues. Because of their rigidity, these polymers become highly oriented in solution and some display liquid crystalline behavior. The purpose of this paper is to summarize the authorsʹ theoretical work on the structures, conformational energies, intermolecular interactions, electronic properties, electrical conductivity, and electrooptical properties of these chains, including, in some cases, the so-called articulated forms and the protonated forms known to exist in strong acids. The emphasis is on how such studies provide a molecular understanding of the unusual properties and processing characteristics of this new class of materials.

scholarly journals Perylene-like Dyes in Liquid Crystalline Media

1996 ◽  
Vol 51 (7) ◽  
pp. 843-850 ◽  
Author(s):  
Ewa Mykowska ◽  
Danuta Bauman
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Order Parameter ◽  
Liquid Crystalline ◽  
Fluorescent Dyes ◽  
Liquid Crystal Display ◽  
Isotropic Phase ◽  
Display Devices ◽  
Electrooptical Properties ◽  
Derivatives Of

Abstract The spectral and electrooptical properties of some dichroic fluorescent dyes (derivatives of 3.4,9,10-perylenetetracorboxylic acid and of 3,4,9-perylenetricarboxylic acid) in isotropic solvents and nematic liquid crystals have been studied. The order parameter of the dyes in the anisotropic matrices has been determined by means of optical spectroscopy methods. Moreover, the influence of the dye addition on the nematic-isotropic phase transition temperature of the pure host has been investigated. It was found that some of the dyes studied can be utilized in guest-host liquid crystal display devices.

Uv Curable Liquid Crystals and Their Application

1996 ◽  
Vol 425 ◽  
Author(s):  
H. Takatsu ◽  
H. Hasebe
Keyword(s):  
Liquid Crystals ◽  
Light Scattering ◽  
Liquid Crystalline ◽  
Room Temperature ◽  
Polymer Network ◽  
Driving Voltage ◽  
Uv Curable ◽  
Good Thermal Stability ◽  
Photo Polymerization ◽  
Smectic A

AbstractSome classes of liquid crystalline monoacrylates having no methylene spacers in a side chain have been prepared. The liquid crystalline monoacrylates have effects to reduce the driving voltage and the hysteresis for a light scattering display of Polymer Network liquid crystals prepared by photo-polymerization-induced phase separation.By photo-polymerization of a chiral monoacrylate monomer in a nematic liquid crystalline host including a black dichroic dye, a polarizer free reflective Spiral Polymer Aligned Nematic (SPAN) Guest Host (GH) LCD exhibiting a low driving voltage has been fabricated. The effect of the spiral polymers made of some kinds of chiral monoacrylates for a Super Twisted Nematic (STN) LCD using SPAN liquid crystals is discussed.UV-curable liquid crystals showing nematic phases at room temperature have been developed. By in situ photo-polymerization, the UV-curable liquid crystals can be utilized for the retardation film with high quality and good thermal stability. The fabrication of various kinds of retardation film using the UV-curable liquid crystals is discussed.UV-curable liquid crystals having isotropic-nematic-smectic A phase sequence have been developed and the photo-polymerization at the state of their uniaxially oriented smectic A phases at room temperature is discussed. The polymerized film is optically uniaxial and transparent without light scattering.

scholarly journals Chiral liquid-crystalline polyacrylates from (S)-(-)-2-methyl-1-butanol. Synthesis, mesomorphic properties and light scattering

2001 ◽  
Vol 12 (2) ◽  
pp. 184-191 ◽  
Author(s):  
Aloir A. Merlo ◽  
Olga M. S. Ritter ◽  
Fabiano V. Pereira ◽  
Carolina H. Vieira ◽  
Nádya P. da Silveira
Keyword(s):  
Light Scattering ◽  
Liquid Crystalline ◽  
Mesomorphic Properties

Laser Light Scattering by Poly‐α‐amino Acid Solutions

1969 ◽  
Vol 50 (7) ◽  
pp. 3098-3100 ◽  
Author(s):  
N. C. Ford ◽  
W. Lee ◽  
F. E. Karasz
Keyword(s):  
Amino Acid ◽  
Light Scattering ◽  
Laser Light ◽  
Laser Light Scattering ◽  
Acid Solutions ◽  
Amino Acid Solutions

Amphotropic liquid-crystalline behaviour of glycolipids in amino acid ionic liquids

2019 ◽  
Vol 46 (8) ◽  
pp. 1298-1306 ◽  
Author(s):  
Yukako Shimizu ◽  
Hiroaki Takeuchi ◽  
Rika Takeuchi ◽  
Takahiro Ichikawa
Keyword(s):  
Ionic Liquids ◽  
Amino Acid ◽  
Liquid Crystalline

Amino acid permeability of liposomal membranes measured by light scattering method: a simulation with a method of cumulants

1981 ◽  
Vol 9 (2) ◽  
pp. 153-164 ◽  
Author(s):  
Takeguchi Noriaki ◽  
Morii Magotoshi ◽  
Kashiwagura Tadashi ◽  
Ishizuka Yasuji ◽  
Horikoshi Isamu
Keyword(s):  
Amino Acid ◽  
Light Scattering ◽  
Scattering Method ◽  
Liposomal Membranes

A Comprehensive Study on Lyotropic Liquid-Crystalline Behavior of an Amphiphile in 20 Kinds of Amino Acid Ionic Liquids

2015 ◽  
Vol 11 (4) ◽  
pp. 520-526 ◽  
Author(s):  
Kanae Fujimura ◽  
Takahiro Ichikawa ◽  
Masafumi Yoshio ◽  
Takashi Kato ◽  
Hiroyuki Ohno
Keyword(s):  
Ionic Liquids ◽  
Amino Acid ◽  
Liquid Crystalline ◽  
Comprehensive Study
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