Room-temperature diphenyl-diacetylene liquid crystals

Shin Tson Wu*, J. D. Margerum, H. B. Meng, L. R. Dalton, Chain-Shu Hsu, S. H. Lung

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

73 Scopus citations


Thirty new asymmetric diphenyl-diacetylene (PTTP) liquid-crystal homologs are synthesized and their physical properties characterized. In addition to the observed high birefringence and relatively low viscosity, several dialkyl PTTP homologs also possess a low melting point, wide nematic range, and low heat of fusion enthalpy. These properties are highly desirable for forming eutectic mixtures with entirely PTTP components. A binary eutectic showing a nematic range from 10 to 98°C is studied. These new liquid-crystal compounds and mixtures should be particularly useful for infrared applications.

Original languageEnglish
Pages (from-to)630-632
Number of pages3
JournalApplied Physics Letters
Issue number6
StatePublished - 1 Dec 1992

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