Alignment of liquid crystals on self-assembled monolayers using ultra-thin gold films

J.T.A. Wilderbeek, F.J.A. Meer, van der, K. Feldman, D.J. Broer, C.W.M. Bastiaansen

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    Abstract

    Thin films (1-100 .ANG.) of Au were sputtered on glass substrates coated with an ITO layer, a non-rubbed polyimide planarization layer, and a Cr adhesion interlayer. Then, self-assembled monolayers (SAMs) of the thiols 1-dodecanethiol, 1-hexadecanethiol, and 11-mercapto-1-undecanol were deposited on these substrates. The samples were characterized by AFM, polarized optical microscopy, and UV-vis spectroscopy. Furthermore, display cells were constructed, filled with the liq. crystals and characterized by measurements of their electrooptical properties. For the apolar thiols, a monolithic homeotropic alignment was obsd., while, the alkanethiols with a polar end group exhibited a monolithic planar liq.-crystal alignment. The transparency of the SAMs was enhanced. [on SciFinder (R)]
    Original languageEnglish
    Pages (from-to)655-658
    Number of pages4
    JournalAdvanced Materials
    Volume14
    Issue number9
    DOIs
    Publication statusPublished - 2002

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