Enhancing birefringence by doping fluorinated phenyltolanes

Sebastian Gauza, Yang Zhao, Tatiana Le Cor, Shin Tson Wu, Jerzy Dziaduszek, Genadz Sasnouski, Roman Dabrowski, Liang Chy Chien

Research output: Contribution to journalArticlepeer-review


We have designed, synthesized, and evaluated the physical properties of some high birefringence (Δn) isothiocyanato phenyltolane and quaterphenyl liquid crystals. These compounds exhibit Δn ∼ 0.48 - 0.52 at room temperature and wavelength λ = 633 nm. Laterally substituted short alkyl chains and fluorine atom eliminate smectic phase and lower the melting temperature. The moderate melting temperature and very high clearing temperature make those compounds attractive for eutectic mixture formulation. These compounds can be used as dopants for color-sequential liquid crystal displays or eutectic mixtures for laser beam steering.

Original languageEnglish (US)
Pages (from-to)327-331
Number of pages5
JournalIEEE/OSA Journal of Display Technology
Issue number4
StatePublished - Dec 2006
Externally publishedYes


  • Eutectic mixtures
  • High birefringence
  • Liquid crystals
  • Phenyltolane isothiocyanates
  • Quaterphenyl isothiocyanates

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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