Mesomeric Effects of Azobenzene Bearing Natural Product-Based Molecules for Liquid Crystal Materials: An Overview

Author(s): Saba Farooq*, Zainab Ngaini*

Journal Name: Current Organic Synthesis

Volume 18 , Issue 4 , 2021


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Abstract:

Latest progress in the liquid crystal (LC) field related to azo molecules incorporated into natural product- based moieties for the improvement of LC texture and mesomeric phases has received great interest among researchers. A LC containing natural product-based moieties i.e. menthol, kojic acid, cholesterol and chalcone with stable azo and azobenzene scaffolds with specific optical tunability, has been widely used in photo-active materials such as Liquid Crystal Display (LCD), LC films, smart windows and other devices. This review discusses the influence of azobenzene, a renowned photo-responsive and stable LC scaffold, in mesogenic phases due to photo-isomerization and optical switching. The incorporation of mesomeric phases of natural product moieties to azo molecules has improved the properties of LC, i.e, from the nematic phase to the smectic phase with proper magnetic field alignment. Natural product-based LC can be useful in numerous applications, especially practical electronic or optic devices such as optical image storage, display devices, solar cells, optical switching.

Keywords: Liquid crystal, coumarin, chalcone, catalyst, menthol, nematic phase.

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Article Details

VOLUME: 18
ISSUE: 4
Year: 2021
Published on: 06 June, 2021
Page: [318 - 332]
Pages: 15
DOI: 10.2174/1570179417666200810142857
Price: $65

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