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Liquid crystal binary mixtures of 8OCB + 10OCB. Evidence for a smectic A-to-nematic tricritical point. | LitMetric
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Liquid crystal binary mixtures of 8OCB + 10OCB. Evidence for a smectic A-to-nematic tricritical point.

Mohamed B Sied Sergio Diez Josep Salud David O López Paul Cusmin Josep Ll Tamarit María Barrio

J Phys Chem B

Laboratori de Caracterització de Materials (LCM), Departament de Física i Enginyeria Nuclear, ETSEIB Universitat Politècnica de Catalunya, Diagonal 647, 08028 Barcelona, Spain.

Published: September 2005

The two-component system octyloxycyanobiphenyl (8OCB) + decyloxycyanobiphenil (10OCB) has been studied by means of modulated differential scanning calorimetry as well as optical microscopy. The general trends of the phase diagram are similar to the two-component system octylcyanobiphenyl (8CB) + decylcyanobiphenil (10CB), previously published. Evidence for the existence of a TCP have been reported, the molar composition being about 0.33 of 10OCB. Additionally, the smectic mesophase of the 8OCB + 10OCB mixtures has been unmistakably characterized through optical measurements as smectic A for the whole composition range.

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http://dx.doi.org/10.1021/jp051957xDOI Listing

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