Synthesis and Characterization of Unsymmetrically β-Substituted Porphyrin Liquid Crystals:  Influence of the Chemical Structure on the Mesophase Ordering

2005 ◽  
Vol 17 (21) ◽  
pp. 5366-5374 ◽  
Author(s):  
Antoni Segade ◽  
Mercè Castella ◽  
Francisco López-Calahorra ◽  
Dolores Velasco
Keyword(s):  
Liquid Crystals ◽  
Chemical Structure ◽  
Synthesis And Characterization

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.

Synthesis and characterization of novel sulfonated polyimide with varying chemical structure for fuel cell applications

2018 ◽  
Vol 319 ◽  
pp. 141-147 ◽  
Author(s):  
Khurram Liaqat ◽  
Wajid Rehman ◽  
Shaukat Saeed ◽  
Muhammad Waseem ◽  
Srosh Fazil ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Chemical Structure ◽  
Synthesis And Characterization ◽  
Sulfonated Polyimide

Synthesis and Characterization of Fluorinated Alkyl Substituted Disiloxane

2014 ◽  
Vol 529 ◽  
pp. 13-15
Author(s):  
Qing Chuan Xi ◽  
Ke Cao ◽  
Ya Wen Huang ◽  
Guan Jun Chang ◽  
Jun Xiao Yang
Keyword(s):  
High Performance ◽  
Chemical Structure ◽  
Rust Resistance ◽  
Condensation Reaction ◽  
Synthesis And Characterization ◽  
Silicon Oil ◽  
Temperature Performance ◽  
Diffusion Pump ◽  
Measurement Results

Alkyl substituted disiloxanes demonstrated promising applications as high performance hydraulic oil, diffusion pump oil, etc. In this study, fluorinated alkyl substituted disiloxane was synthesized via Grignard reaction followed by condensation reaction. Its chemical structure was verified by FTIR and NMR. Measurement results showed that this silicon oil exhibited good high temperature performance, oxidation resistance and rust resistance.

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
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