Unusual polymorphism in new bent-shaped liquid crystals based on biphenyl as a central molecular core

• Anna Kovářová,
• Svatopluk Světlík,
• Václav Kozmík,
• Jiří Svoboda,
• Vladimíra Novotná,
• Damian Pociecha,
• Ewa Gorecka and
• Natalia Podoliak

Beilstein J. Org. Chem. 2014, 10, 794–807, doi:10.3762/bjoc.10.75

• dielectric measurements. The dielectric spectroscopy data are unique and presented for the first time in the SmCG phase providing new information about the molecular dynamics. Keywords: bent-shaped; biphenyl core; liquid crystals; mesomorphic behaviour; SmCG phase; Introduction Achiral bent-shaped liquid

• with change of the structural chirality is detected more often [39][40][41]. Bent-shaped molecules rarely form a lamellar phase with a triclinic symmetry C1 called general tilt smectics, SmCG [42][43][44][45]. The molecules in the SmCG phase are tilted in such a way that the polarization vector has its

• freedom for building the bilayer structure–polarization vectors in consecutive layers can be synleaning or antileaning. Only few experimental studies have been reported regarding the realization of the SmCG phase in bent-shaped molecules [12]. From the above mentioned it follows that bent-shaped mesogens