Charaterization of cyanobiphenyl-cyanoterphenyl mixtures in Langmuir films

Tomasz Martynski; Danuta Bauman

doi:10.1117/12.385686

12 May 2000 Charaterization of cyanobiphenyl-cyanoterphenyl mixtures in Langmuir films

Tomasz Martynski, Danuta Bauman

Proceedings Volume 4147, Liquid Crystals: Chemistry, Physics, and Applications; (2000) https://doi.org/10.1117/12.385686
Event: XIII International Conference on Liquid Crystals: Chemistry, Physics, and Applications, 1999, Krynica Zdroj, Poland

Abstract

Results of the thermodynamic study of the molecular interaction in Langmuir films of mixtures of 4-n-octyl-4'- cyanobiphenyl (8CB) and 4-pentyl-4'-cyanoterphenyl (5CT) are presented. Both mixed materials are thermotropic liquid crystals and as a single component material is able to form a monolayer at the air-water interface. We demonstrate the effect of interaction of two similar liquid crystal molecules and how the surface pressure is affected by mixing the components in different mole fractions. The surface pressure-area isotherms indicate that 8CB and 5CT are immiscible in whole mole fraction range.

Citation Download Citation

Tomasz Martynski and Danuta Bauman "Charaterization of cyanobiphenyl-cyanoterphenyl mixtures in Langmuir films", Proc. SPIE 4147, Liquid Crystals: Chemistry, Physics, and Applications, (12 May 2000); https://doi.org/10.1117/12.385686

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