Synthesis and mesomorphic properties of fluoro and isothiocyanato biphenyl tolane liquid crystals

Four series of high birefringence biphenyl tolane liquid crystals having a terminal isothiocyanato or fluoro group were synthesized; their mesomorphic properties were studied by optical polarizing microscopy and DSC. These biphenyl tolane compounds exhibit reasonably low melting points and high bire...

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Bibliographic Details
Published in:Liquid crystals 2006-10, Vol.33 (10), p.1199-1206
Main Authors: Liao, Yung-Ming, Janarthanan, Narayanasamy, Hsu, Chain-Shu, Gauza, Sebastian, Wu, Shin-Tson
Format: Article
Language:English
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Summary:Four series of high birefringence biphenyl tolane liquid crystals having a terminal isothiocyanato or fluoro group were synthesized; their mesomorphic properties were studied by optical polarizing microscopy and DSC. These biphenyl tolane compounds exhibit reasonably low melting points and high birefringence of 0.37-0.49. By using these compounds a eutectic mixture was formulated exhibiting a wide nematic range, high figure-of-merit and low viscosity.
ISSN:0267-8292
1366-5855
DOI:10.1080/02678290601008497