Nematic liquid crystals are advantageous for microwave communication due to their tunable dielectric properties and broad frequency range. However, the relationship between the lateral substituents of liquid crystal compounds and their dielectric behaviour, especially dielectric loss, requires further investigation. In this study, two series of new high birefringent isothiocyanate phenyl tolane (A1-A5) and isothiocyanate terphenyl (B1-B5) liquid crystals with lateral methyl or fluorine substitutions were synthesised and characterised. Dielectric properties in the 9-31 GHz frequency range, as w...
