Effect of the Molecular Structure of Weakly Rubbed Organic Solvent Soluble Polyimides with Trifluoromethyl Moieties on Anchoring Strength of Liquid Crystals

Michinori Nishikawa, Yoshikazu Yabe, Shunsuke Kobayashi, Dae-Shik Seo

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Abstract

We have investigated the effect of molecular structure of weakly rubbed organic solvent soluble polyimides (PI) with trifluoromethyl moieties on polar (out of plane-tilt) anchoring strength and the surface ordering of nematic liquid crystal (NLC), 5CB. We have found that the polar anchoring strength of 5CB is dependent on the molecular structure of these unidirectionally rubbed PI surfaces. Also, we have clearly observed that the polar anchoring strength of 5CB strongly depends on the surface ordering of weakly rubbed PI surfaces.

Original languageEnglish
Pages (from-to)L1214-L1217
JournalJapanese Journal of Applied Physics
Volume34
Issue number9
DOIs
Publication statusPublished - 1995 Jan 1

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All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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