Fabrication of photoluminescent liquid crystal device using an in situ self-assembled molecular layer of a pyrene derivative

Intae Son, Byungsun Lee, Chunho Kim, Seung Woo Cho, Kyu Hyun, Jun Hyup Lee

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

An in situ self-assembled molecular layer of 1-pyrenesulfonic acid sodium salt as an alignment agent was formed on indium tin oxide substrates for vertically aligning liquid crystals (LCs). The thus-aligned LCs exhibited uniform vertical alignment under crossed polarisers. The electro-optical characteristic of the LC cell fabricated using this method exhibited better performance than those of conventional LC cells with a polyimide alignment layer. Because the proposed alignment method is a simple one and involves low concentrations of the alignment agent (0.05 wt%), it is highly cost-effective. Further, the pyrene derivative, when mixed with LCs, exhibited photoluminescence (PL) under ultraviolet light. Given that the proposed method resulted in highly vertically aligned LCs and the alignment agent exhibited PL, the method should find wide use in the fabrication of colour-filter-free LC displays.

Original languageEnglish
Pages (from-to)1076-1082
Number of pages7
JournalLiquid Crystals
Volume42
Issue number8
DOIs
Publication statusPublished - 2015 Aug 3

Bibliographical note

Publisher Copyright:
© 2015 Taylor & Francis.

All Science Journal Classification (ASJC) codes

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

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