Liquid crystal alignment and pretilt angle generation on a photopolymer layer based on N-(phenyl)maleimide

Jeoung Yeon Hwang, Dae Shik Seo, Jun Young Kim, Tae Ho Kim

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Abstract

A photopolymer based on N-(phenyl)maleimide was synthesized and the liquid crystal (LC) alignment effects of the photopolymer layer on homeotropic alignment were studied. Good LC alignment with UV exposure of PMI5CA (N-(phenyl)maleimide with a 5-carbon chain cinnamoyl group) was obtained. However, defective LC alignment was observed for PMI3CA (N-(phenyl)maleimide with a 3-carbon chain cinnamoyl group) and PMIF (N-(phenyl)maleimide including a fluoro-cinnamoyl group). Good LC alignment with UV exposure on the PMI5CA surface was observed with annealing temperature up to 150°C. It seems that the LC aligning ability of the photopolymer layers based on N-(phenyl)maleimide depends on the side chain length of the photopolymer.

Original languageEnglish
Pages (from-to)1047-1050
Number of pages4
JournalLiquid Crystals
Volume29
Issue number8
DOIs
Publication statusPublished - 2002 Aug 1

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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