ChemInform Abstract: Synthesis and Helical Twisting Power of Optically Active 2-Methylchroman-2-carboxylic Acid Derivatives as New Chiral Dopants for Nematic Liquid Crystals.

ChemInform ◽  
2010 ◽  
Vol 29 (29) ◽  
pp. no-no
Author(s):  
H. SHITARA ◽  
Y. AOKI ◽  
T. HIROSE ◽  
H. NOHIRA
Keyword(s):  
Liquid Crystals ◽  
Carboxylic Acid ◽  
Nematic Liquid Crystals ◽  
Optically Active ◽  
Chiral Dopants ◽  
Helical Twisting Power

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

Tris(β-diketonato) Ru(III) Complexes as Chiral Dopants for Nematic Liquid Crystals: the Effect of the Molecular Structure on the Helical Twisting Power

2013 ◽  
Vol 52 (19) ◽  
pp. 11042-11050 ◽  
Author(s):  
Jun Yoshida ◽  
Go Watanabe ◽  
Kaori Kakizawa ◽  
Yasuhiro Kawabata ◽  
Hidetaka Yuge
Keyword(s):  
Molecular Structure ◽  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Chiral Dopants ◽  
Helical Twisting Power
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