抄録
Thermal behaviors of α-disubstituted oligothiophenes having thiophene rings as the rigid core were investigated. The influence of the substituent at the α-position on the thermal behavior is discussed. 5,5"-dicyanoterthiophene exhibited a nematic liquid crystalline phase at 205℃ on cooling. It should be emphasized that this molecule Jacks in a flexible substituent such as a long alkyl chain.