Three new chiral series with an azobenzene core have been synthesized and studied. The twist grain boundary smectic A and C phases, obtained with a cholesteric texture, were characterized by different techniques: binary diagram, racemic mixtures, helical pitch measurement and X-ray diffraction. Helical pitch measurements of the TGBA and TGBC phases were performed using Grandjean-Cano wedges and those of the S∗C phase with homeotropic drops. The pitch values are similar to those of tolane compounds previously studied. Electro-optical properties of the S∗C phase were measured with classical SSFLC geometry and the results are comparable with previous studies.
No takes yet. Share an insight, caveat, or question.
Werth et al. (1994) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: