Nano-Engineering of New Photoreactive Materials Having Fluorine Units: Synthesis and Photoalignment of Liquid Crystals

DOI: 10.4236/snl.2013.31001   PDF   HTML   XML   3,953 Downloads   6,797 Views   Citations


In order to investigate the photoalignment mechanism of nematic liquid crystals on an oxadiazoles, new 1,3,4-oxadiazole having fluorine atoms as terminal, as well as sideways was synthesized. Linearly polarized UV light shined in these nano-layered films causes the preferential direction of the liquid crystal molecules either perpendicular (in the case of terminal fluoro substitution) or parallel (in the case of sideways fluorine substitution) to the polarized direction. A powerful indication about the relationship between molecular structure and alignment properties where just by changing fluorine atom can change the entire alignment direction is proposed. Such information is indispensable for the design and synthesis of photoalignment materials for liquid crystal displays of high quality.

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R. Alaa, G. Hegde, A. Isloor, B. Chandrakantha, S. Malladi, M. Yusoff and L. Komitov, "Nano-engineering of New Photoreactive Materials Having Fluorine Units: Synthesis and Photoalignment of Liquid Crystals," Soft Nanoscience Letters, Vol. 3 No. 1, 2013, pp. 1-6. doi: 10.4236/snl.2013.31001.

Conflicts of Interest

The authors declare no conflicts of interest.


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