Preparation and properties of novel mesogenic spin system

Series of biphenyl derivatives bearing TEMPO (2,2,6,6-tetramethyl-1-piperid inyloxy)-substituents on one hand and long alkyl- or alkoxy-substituent on the other hand have been prepared. Among them a mesogenic property has been found in a biphenyl derivative with N-methyl-amino-TEMPO-carboxamide-subst ituent having lamellar structure of the molecular arrangement to show local antiferromagnetic spin interactions.