Spectral Variations in Selective Reflection in Cholesteric Liquid Crystals Containing Opposite-Handed Chiral Dopants

2014 ◽  
Vol 596 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Yu-Jen Liu ◽  
Po-Chang Wu ◽  
Wei Lee
Keyword(s):  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Selective Reflection ◽  
Chiral Dopants

scholarly journals Synthesis and Characterization of Novel Bio-Chiral Dopants Obtained from Bio-Betulin Produced by a Fermentation Process

Crystals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 785
Author(s):  
Veridiana G. Guimarães ◽  
Anastasiia Svanidze ◽  
Tianyi Guo ◽  
Pawan Nepal ◽  
Robert J. Twieg ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Natural Product ◽  
Fermentation Process ◽  
Synthesis And Characterization ◽  
Cholesteric Liquid Crystals ◽  
And Performance ◽  
Chiral Dopants

Cholesteric liquid crystals are frequently produced by the addition of chiral dopants to achiral nematic hosts. We report here the synthesis and performance of chiral dopants obtained from bio-betulin produced by a fermentation process. An important aspect of this work is to point out that the fermentation process used to obtain the starting materials is much easier and cheaper when carried out in large volumes than isolating it from the natural product. The performance of the dopants obtained from bio-betulin is indistinguishable from those obtained from commercially available synthetic betulin.

scholarly journals Glycomacrocycle-Based Azobenzene Derivatives as Chiral Dopants for Photoresponsive Cholesteric Liquid Crystals

2020 ◽  
Vol 12 (46) ◽  
pp. 52146-52155
Author(s):  
Yuna Kim ◽  
Noushaba Nusrat Mafy ◽  
Stéphane Maisonneuve ◽  
Chaoqi Lin ◽  
Nobuyuki Tamaoki ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Chiral Dopants ◽  
Azobenzene Derivatives

Study on Planar Orientation and Selective Reflection of Cholesteric Liquid Crystals

Polymer Korea ◽  
2010 ◽  
Vol 34 (3) ◽  
pp. 242-246 ◽  
Author(s):  
Gap Ha Jung ◽  
In n Seo ◽  
Mong Ryong Lee ◽  
Suk Won Choi ◽  
Ki Gook Song
Keyword(s):  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Selective Reflection ◽  
Planar Orientation

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.

scholarly journals Electrically Induced Splitting of the Selective Reflection in Polymer Stabilized Cholesteric Liquid Crystals

2020 ◽  
Vol 8 (19) ◽  
pp. 2000914 ◽  
Author(s):  
Brian P. Radka ◽  
Brent E. King ◽  
Michael E. McConney ◽  
Timothy J. White
Keyword(s):  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Selective Reflection ◽  
Polymer Stabilized
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