Synthesis and Mesomorphic Properties of Biphenyl Derivatives with Central Unit Based on 1,6-Hexamethylene Diisocyanate Oligomers

A number of compounds with biphenyl as a mesogenic fragment and structure simulating LC dimers, polymers side chain groups star-shaped have been synthesized. An approach for the synthesis such under mild conditions without complex purification procedure quantitative yield, has developed. The is implementation “click chemistry” methods compounds. It shown that state observed only if there are three biphenyls in one molecule, i.e., appear to be similar polyesters moiety. determining factor formation particularly smectic mesomorphism potentially “weak” mesogen intermolecular hydrogen bonds.