Abstract
Two homologous series of quinoline-containing liquid crystalline compounds were synthesised. Preparation of these compounds was completed in a short two-step reaction. Fair to good two-step overall yields of 63%–68% and 50%–60% were obtained respectively for the liquid crystalline compounds of 2-(4-alkylphenyl)-6-methylquinolines (nPQMe, n = 4–8) and 2-(4-alkoxyphenyl)-6-methylquinolines (mOPQMe, m = 3–7). Spectral analyses were in accordance with the expected structures. Polarising optical microscopy showed both series of compounds only display a nematic phase. Their thermotropic behaviours were further confirmed by differential scanning calorimetry.
Acknowledgement
Financial support of our work by the office of research and development of Fu Jen Catholic University is gratefully acknowledged.