Synthesis, liquid crystal characterization and photo-switching studies on fluorine substituted azobenzene based esters

@article{Gan2015SynthesisLC,
  title={Synthesis, liquid crystal characterization and photo-switching studies on fluorine substituted azobenzene based esters},
  author={Siew Mei Gan and A. R. Yuvaraj and M. R. Lutfor and Mohd. Yusoff Mashitah and Hegde Gurumurthy},
  journal={RSC Advances},
  year={2015},
  volume={5},
  pages={6279-6285}
}
A series of fluorinated azobenzene esters have been synthesized and studied by polarized optical microscopy (POM) and UV-Vis spectrophotometry. The –CO2C2H5 group with monofluoro-substituted azobenzene exhibited nematic and smectic phases whereas difluoro-substituted azobenzene showed only the nematic phase. The addition of the electronegative fluorine atom plays an important role in photoisomerization of the azobenzene molecules. The monofluoro-substituted azobenzene gave strong… 
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References

SHOWING 1-10 OF 25 REFERENCES

Synthesis and characterization of liquid crystalline azobenzene chromophores with fluorobenzene terminal

Synthesis and Characterization of Bent-shaped Azobenzene Monomers: Guest-host Effects in Liquid Crystals With Azo Dyes for Optical Image Storage Devices

Thermal and photo reversible gel–sol transition of azobenzene based liquid crystalline organogel

Photo-induced and thermal reactions in thin films of an azobenzene derivative on Bi(111)

Azobenzene is a prototypical molecular switch which can be interconverted with UV and visible light between a trans and a cis isomer in solution. While the ability to control their conformation with…

Preparation and thermo-optic switch properties based on chiral azobenzene-containing polyurethane

Aliphatic/aromatic spacers based azo dye dimers: synthesis and application for optical storage devices

The photoisomerization effect of new bent-shaped azo dyes in the presence of aliphatic and aromatic spacers is reported for the first time. The synthesized compounds with n-hexane and benzene as…

Photoisomerization in different classes of azobenzene.

This critical review details the studies completed to date on the 3 main classes of azobenzene derivatives and explains the mechanism behind the isomerization mechanism.

Using light to control physical properties of polymers and surfaces with azobenzene chromophores

Abstract Azobenzene chromophores can be switched between two geometric isomers using visible light. This photoisomerization is rapid, reversible, and of high quantum yield, and the wavelengths…

Preparation of a photoresponsive molecularly imprinted polymer containing fluorine-substituted azobenzene chromophores

Synthesis and mesophase behaviour of ionic liquid crystals

N-Alkyl-pyridinium derivatives 1–3 and N-alkyl-stilbazolium halides 4–6 with hydroxy, methoxy and hydrogen 4′-substituents and long non-branched alkyl chains (n = 14, 16, 18, 20, 22) were synthesized…