Photoalignment Studies on Azo Containing Thiophene Based Acrylates

Gurumurthy Hegde; Rasha Ata Alla; D. Chambers-Asman; M.M. Yusoff; A.S. Matharu; Lachezar Komitov

doi:10.4028/www.scientific.net/AMR.895.125

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 895Photoalignment Studies on Azo Containing Thiophene...

Photoalignment Studies on Azo Containing Thiophene Based Acrylates

Abstract:

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; ε>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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Periodical:

Advanced Materials Research (Volume 895)

Pages:

125-129

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.895.125

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Online since:

February 2014

Authors:

Gurumurthy Hegde, Rasha Ata Alla, D. Chambers-Asman, M.M. Yusoff, A.S. Matharu, Lachezar Komitov

Keywords:

Acrylates, AZO Dye, Liquid Crystals, Photoalignment, Thiophenes

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