Equimolecular Mixture of Calamitic and Bent-Core Thiobenzoates

J. Chruściel, B. Wantusiak, M.D. Ossowska-Chruściel
2012 Acta Physica Polonica. A  
This article reports on the new results on phase transitions, mesomorphic and electro-optical properties of new equimolecular mixture of calamitic and bent-core thiobenzoates. Two following liquid crystals were the components of the binary mixture: (S)-(+)-4-(1-methylheptyloxy)biphenyl 4 ′ -octylthiobenzoate (MHOBS8) having rode-like, calamitic-chiral molecules possessing among others ferroelectric smectic C (SmC * ) and bis [4-(4 ′ -octylphenylthiocarbonyl)phenyl] isophtalates from a
more » ... series of banana-shaped thioesters, referred to as IFOS8, where n = 8 denoted the number of carbon atoms in terminal alkyl chains in both mesogens, synthesized by us. The IFOS8 compound has two enantiotropic phases: B2 with antiferroelectric order and B6. The mesomorphic properties were investigated by means of three complementary methods: dierential scanning calorimetry, polarized light optical microscopy, and transmitted light intensity. Electro-optical measurements were also carried out.
doi:10.12693/aphyspola.122.375 fatcat:okocjkjzsfdohfllcfvvitxacu