RESEARCH NOTE On the helical twisting power of chiral dopants in liquid crystals

1997 ◽  
Vol 91 (2) ◽  
pp. 381-384 ◽  
Author(s):  
By PHILIP J. CAMP
Keyword(s):  
Liquid Crystals ◽  
Research Note ◽  
Chiral Dopants ◽  
Helical Twisting Power

Bis-Chelated Imine-Alkoxytitanium Complexes: Novel Chiral Dopants with High Helical Twisting Power in Liquid Crystals

2005 ◽  
Vol 11 (11) ◽  
pp. 3405-3412 ◽  
Author(s):  
Manfred Braun ◽  
Antje Hahn ◽  
Marco Engelmann ◽  
Ralf Fleischer ◽  
Walter Frank ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Chiral Dopants ◽  
Helical Twisting Power

Novel planar chiral dopants with high helical twisting power and structure-dependent functions

2016 ◽  
Vol 4 (40) ◽  
pp. 9576-9580 ◽  
Author(s):  
Jinjie Lu ◽  
Wei Gu ◽  
Jia Wei ◽  
Wei Zhang ◽  
Zhengbiao Zhang ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Chiral Dopants ◽  
Helical Twisting Power

Three kinds of novel planar chiral azobenzenophane with high HTP values were synthesized. Then, cholesteric liquid crystals with different screw directions were induced by them successfully. And reversible tuning between orange and green reflection colors was achieved.

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

scholarly journals Substituent effects of bridged binaphthyl-type chiral dopants on the helical twisting power in dopant-induced chiral liquid crystals

RSC Advances ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 971-979 ◽  
Author(s):  
Yu Narazaki ◽  
Hiroya Nishikawa ◽  
Hiroki Higuchi ◽  
Yasushi Okumura ◽  
Hirotsugu Kikuchi
Keyword(s):  
Liquid Crystals ◽  
Systematic Study ◽  
Substituent Effects ◽  
Chiral Dopants ◽  
Chiral Liquid Crystals ◽  
Helical Twisting Power

A systematic study of the induced helical twisting power by the 6,6′-substituted bridged binaphthyl-type chiral dopants.

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