High birefringence phenyl tolane positive compounds for dual frequency liquid crystals

High birefringence lateral difluoro phenyl tolane liquid crystals

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High birefringence and large negative dielectric anisotropy phenyl-tolane liquid crystals

Dopant-Enhanced Vertical Alignment of Negative Liquid Crystals

A simple method for achieving high-contrast vertical alignment of high birefringence (Dn 0.28) negative dielectric anisotropic liquid crystal mixture using buffed polyimide substrates is demonstrated. By doping a positive, or non-polar dielectric anisotropic compound or mixture to the laterally difluorinated tolane liquid crystal host, an excellent vertical alignment was obtained. This alignmen...

Low mid-infrared absorption tolane liquid crystals terminated by 2,2-difluorovinyloxyl: synthesis, characterization and properties

The synthesis and characterization of new 2,2-difluorovinyloxyl terminated tolane liquid crystals are reported. The mesomorphic properties, mid-wave infrared (MWIR) absorption and birefringence were investigated. The results show that these materials exhibit low absorption loss, a wide nematic phase range, a low melting point and high birefringence. The influences of fluorine substitution and t...

Physical properties of laterally fluorinated isothiocyanato phenyl-tolane liquid crystals

Liquid Crystals Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t713926090 Physical properties of laterally fluorinated isothiocyanato phenyl-tolane liquid crystals S. Gauza a; A. Parish a; S. -T. Wu a; A. Spadło b; R. Dabrowski b a College of Optics and Photonics, University of Central Florida, Orlando, Florid...