Bias field influence on dielectric spectra of B phases of bent-core thioesters

Unusual physical properties inBphase of polar bent-core thioester compound

“…One can see that the saturation electric field is rather high for the material studied and similar to that obtained for the members of nOSOR homologous series [10,14,15].…”

“…A general symbol of B 2 phase is as follows: SmC SA P FA , where index ''S'' stands for synclinic, A for anti-clinic order of molecules in the layers, and F for ferroelectric, A for anti-ferroelectric order of polarization vectors. Recent studies [3,7,10,14,15] performed on a few homologous series show that compounds with shorter side chains (C 5 -C 9 ) exhibit only a frustrated B 1 phase, whereas those having longer chains (C 10 -C 14 ) generally display anti-ferroelectric B 2 phase. The main objective of this article is to present dielectric and electro-optic behavior of 4-chloro-1,3-phenylene bis{4-[(n-undecyloxybenzoyl)-sulfanyl]benzoate} (11OSORCl), which exhibits enantiotropic ferroelectric B F phase.…”

“…As known, banana-shaped compounds may form lamellar smectic mesophases that in the last decades have become a subject of intensive experimental [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] and theoretical [16,17] studies. The most fascinating feature of such systems is that they are non-chiral on molecular level but they show chirality on macroscopic level, which leads to interesting ferroelectric and/or anti-ferroelectric properties.…”