scholarly journals Aromatic Polyesters with Flexible Side Chains. 10. Studies on Biaxiality in Nematic Liquid Crystal of BC-n Polyester

2006 ◽  
Vol 38 (5) ◽  
pp. 442-446 ◽  
Author(s):  
Kai Fu ◽  
Masato Sone ◽  
Masatoshi Tokita ◽  
Junji Watanabe
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Side Chains ◽  
Aromatic Polyesters

Polar nematic liquid crystal formed from aromatic polyesters with head-tail character

2004 ◽  
Author(s):  
Masao Koike ◽  
Liu Yuqing ◽  
Hitoshi Tsuchiya ◽  
Tatsuya Imase ◽  
Masatoshi Tokita ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Aromatic Polyesters

scholarly journals Molecular Twisting Power chiraler Azobenzole

1982 ◽  
Vol 37 (10) ◽  
pp. 1176-1184 ◽  
Author(s):  
G. Heppke ◽  
F. Oestreicher ◽  
G. Scherowsky
Keyword(s):  
Liquid Crystal ◽  
Aromatic Ring ◽  
Nematic Liquid Crystal ◽  
Ring System ◽  
Anomalous Behaviour ◽  
Chiral Center ◽  
Side Chains ◽  
Substitution Pattern ◽  
Cholesteric Phase

The Molecular Twisting Power (MTP) of the trans- and cis-azocompounds 1 - 4, each substituted either with para- or orthostanding chiral side chains, of the azoxyanalogues 5, 6 and of the chiral nitrobenzenes 7, 8 dissolved in the nematic liquid crystal NP 1132 are investigated. For all various series, althoug there is a distinct change in the geometry of the aromatic part and the substitution pattern, the helical screw sense of the induced cholesteric phase alternates with the number of bonds between the chiral center and the aromatic ring system. For the orthosubstituted azobenzenes 3, 4 a reversible inversion of the helix during the cis-trans-isomerisation is observed. Most of the compounds with the chiral center in the a-position to the aromatic ring system show anomalous behaviour of the MTP.

Unusual Nematic Liquid Crystal with PolarCsSymmetry Formed from Aromatic Polyesters with Head−Tail Character

2007 ◽  
Vol 40 (7) ◽  
pp. 2524-2531 ◽  
Author(s):  
Masao Koike ◽  
Chu-Chun Yen ◽  
Liu Yuqing ◽  
Hitoshi Tsuchiya ◽  
Masatoshi Tokita ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Aromatic Polyesters

Ising-Bloch transition in a nematic liquid crystal

1994 ◽  
Vol 4 (2) ◽  
pp. 319-331 ◽  
Author(s):  
J.M Gilli ◽  
M. Morabito ◽  
T. Frisch
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal
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