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New Para-substituted Non-symmetric Isoflavones for Their Fast Photo-switching Ability: Synthesis and Their Liquid Crystal Characterization

Hegde, Gurumurthy and A. R., Yuvaraj and Wan, Sinn Yam and Tze, Nee Chan and Yit, Peng Goh (2015) New Para-substituted Non-symmetric Isoflavones for Their Fast Photo-switching Ability: Synthesis and Their Liquid Crystal Characterization. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 135. pp. 1115-1122. ISSN 1386-1425 (print); 1873-3557 (online)

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Abstract

The first example of non-symmetric isoflavone-based fast photo-switchable liquid crystals with different functional groups at theterminalposition were synthesized and characterized. Polarizing optical microscopy study revealed that the compounds showed least ordered nematic phase. Optical photo switching study exhibited very fast photoisomerization effect in solution. TheE–ZandZ–Econversion occurred around 3–5 s and 40–700 s respectively. This is also the first example ofpara-substituted non-symmetric isoflavone liquid crystals exhibiting very fast photo switching property in solution. Argument based on non-symmetrical behaviour might be the reason for the observed behaviour.

Item Type: Article
Subjects: Q Science > QD Chemistry
Q Science > QC Physics
Faculty/Division: Faculty of Industrial Sciences And Technology
Depositing User: Dr. Gurumurthy Hegde
Date Deposited: 08 Jan 2015 08:27
Last Modified: 17 May 2018 05:24
URI: http://umpir.ump.edu.my/id/eprint/8071
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