Photoalignment Studies on Azo Containing Thiophene Based Acrylates

Photoalignment Studies on Azo Containing Thiophene Based Acrylates

The photoalignment properties of thin films made from several azo-containing thiophene-based acrylate with respect to the commercially available nematic liquid crystal (MLC 6873-100; Δε>o) is reported. As observed, the photoalignment ability of these films is influenced by the number and disposit...

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Bibliographic Details
Main Authors: Hegde, Gurumurthy, Alla, Rasha Ata, Asman, D. Chambers, M. M., Yusoff, Matharu, A. S., Komitov, Lachezar
Format: Article
Published: Trans Tech Publications, Switzerland 2014
Subjects:
QC Physics
Description
Summary:The photoalignment properties of thin films made from several azo-containing thiophene-based acrylate with respect to the commercially available nematic liquid crystal (MLC 6873-100; Δε>o) is reported. As observed, the photoalignment ability of these films is influenced by the number and disposition of fluoro-substituents and the position of attachment of the terminal thiophene moiety. Inclusion of a lateral fluoro-substituent(s) provides excellent photo alignment ability whereas the non-fluorinated counterpart tends to give unsatisfactory alignment quality. The performed study showed also that 2-substituted thiophenes give better photoalignment quality.

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