EPR Study of the Temperature Dependence of Molecular Rotation in Nematic Liquid Crystals

1971 ◽  
Vol 12 (4) ◽  
pp. 335-344 ◽  
Author(s):  
C. F. Schwerdtfeger ◽  
M. Marušič ◽  
A. Mackay ◽  
R. Y. Dong
Keyword(s):  
Liquid Crystals ◽  
Temperature Dependence ◽  
Nematic Liquid Crystals ◽  
Molecular Rotation

Temperature Dependence of Pretilt Angle for Nematic Liquid Crystals

1978 ◽  
Vol 17 (1) ◽  
pp. 261-262 ◽  
Author(s):  
Akira Toda ◽  
Hitoshi Mada ◽  
Shunsuke Kobayashi
Keyword(s):  
Liquid Crystals ◽  
Temperature Dependence ◽  
Nematic Liquid Crystals ◽  
Pretilt Angle

Synthesis of New Chiral Disubstituted Binaphthol Derivatives and their use as the Chiral Dopants

1996 ◽  
Vol 425 ◽  
Author(s):  
H.-J. Deussen ◽  
P. V. Shibaev ◽  
R. A. Vinokur ◽  
K. Schaumburg ◽  
T. Bjornholm ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Temperature Dependence ◽  
Liquid Crystalline ◽  
Molecular Conformation ◽  
Molecular Model ◽  
Nematic Liquid Crystals ◽  
Spatially Extended ◽  
Chiral Dopants ◽  
Helical Twisting Power

AbstractA number of new chiral binaphthol (BN) derivatives with different substituents in the 6,6'-positions in open and bridged forms have been synthesized. Their possible liquid crystalline properties and their helical twisting power (B) of three different nematic liquid crystals (LCs) were investigated. Derivatives with spatially extended substituents in the 6,6'-positions (e.g. styryl or vinil) show unusual high helical twisting power (up to 120 μm–1). A direct correlation between the magnitude of β and the length of the substituents was found.From the different temperature dependence of β of the open and bridged BNs, a molecular model was developed relating the molecular conformation and twisting power

Temperature dependence of the coefficient of electronic polarizability in calamitic nematic liquid crystals

2001 ◽  
Vol 64 (6) ◽  
Author(s):  
J. R. D. Pereira ◽  
A. M. Mansanares ◽  
A. J. Palangana ◽  
M. L. Baesso ◽  
A. A. Barbosa ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Temperature Dependence ◽  
Nematic Liquid Crystals ◽  
Electronic Polarizability

Bestimmung elastischer Konstanten von MBBA und EBBA mit der elektrischen Leitfähigkeitsmethode / Determination of the Elastic Constants of MBBA and EBBA by Electric Conductivity Measurements

1975 ◽  
Vol 30 (4) ◽  
pp. 515-518 ◽  
Author(s):  
M. Greulich ◽  
G. Heppke ◽  
F. Schneider
Keyword(s):  
Magnetic Susceptibility ◽  
Liquid Crystals ◽  
Temperature Dependence ◽  
Electric Conductivity ◽  
Elastic Constants ◽  
Nematic Liquid Crystals ◽  
Elastic Behaviour ◽  
Conductivity Measurements

Abstract Several methods of studying the elastic behaviour of nematic liquid crystals by means of measuring the electric conductivity are discussed. The temperature dependence of the ratio of the splay and bend elastic constants to the anisotropy of the magnetic susceptibility is determined for N-(p-methoxybenzylidene) -p-n-butylaniline (MBBA), N-(p-ethoxybenzylidene) -p-n-butylaniline (EBBA) and mixtures of both.

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