New Nematogenic β-Diketones for Synthesis of Lanthanidomesogens

A series of new beta-diketones containing in their structure cyclohexane and benzene ring was obtained. The effect of the terminal substituents in the molecules of beta-diketones on their liquid crystal and optical properties was studied. The absorption spectra of all beta-diketones practically do not overlap with the emission spectrum of polymer PFO but have good overlapping with that of PVC. The obtained compounds are promising ligands for synthesis of liquid crystal adducts of lanthanide beta-diketonates with the Lewis bases, polyfunctional luminescent materials.