COSMIN-CONSTANTIN HUZUM, IRINA CARLESCU, GABRIELA LISA, DAN SCUTARU NONSYMMETRIC LIQUID CRYSTALLINE CHOLESTERIC DIMERS DERIVED FROM RESORCINOL
Two new series of cholesterol based dimers were designed and synthesized. The final compounds were obtained by a two steps reaction: first, mono esterification of a resorcinol unit with cholesteryl hydroxysuccinate and second, the remaining phenolic unit was linked with two mesogenic groups containing an acid function. The molecular structure was confirmed by 1H-NMR, 13C-NMR, mass spectrometry and FT-IR investigations. The liquid crystalline behaviour of the synthesized dimers was investigated by differential scanning calorimetry (DSC) coupled with polarizing optical microscopy (POM). All of the dimers showed liquid crystal properties with smectic textures and cholesteric & smectic mesophases, respectively.