The use of discotic nematic liquid crystals instead of calamitic nematic liquid crystals to improve the viewing angle of a liquid crystal display device has recently been reported. Compared to the large number of calamitic molecules showing nematic phase at room temperature, the number of disk-shaped molecules showing subambient discotic nematic phase N-D are rare. In this paper we present the design, synthesis, mesomorphic behaviour and structure-property relationship of discotic nematic liquid crystals based on benzene multiyne core.