Cholesteryl and diosgenyl glycosteroids: synthesis and characterization of new smectic liquid crystals

2015 ◽  
Vol 404 ◽  
pp. 70-78 ◽  
Author(s):  
Rémi Beaulieu ◽  
Sébastien Gottis ◽  
Claire Meyer ◽  
Eric Grand ◽  
Virginie Deveaux ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Synthesis And Characterization ◽  
Smectic Liquid Crystals

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.

Azo-containing asymmetric bent-core liquid crystals with modulated smectic phases

RSC Advances ◽  
2015 ◽  
Vol 5 (80) ◽  
pp. 64886-64891 ◽  
Author(s):  
Nemanja Trišović ◽  
Jelena Antanasijević ◽  
Tibor Tóth-Katona ◽  
Michal Kohout ◽  
Miroslaw Salamonczyk ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Synthesis And Characterization ◽  
Temperature Range ◽  
Smectic Phases ◽  
Potential Applications

We present the synthesis and characterization of ten asymmetric bent-core liquid crystals with enantiotropic modulated smectic (B7 type) phases. Their relatively low and wide photosensitive mesomorphic temperature range offers potential applications.

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