A series of para substituted trans-4-n-alkylcyclohexylbenzylamines was prepared and examined for mesomorphic properties. Then-pentyl derivative 5b showed monotropic smectic behavior while then-heptyl derivative 5c was an enantiotropic smectic. 5b and 5c are the first examples of low temperature liquid crystals incorporating an amino functionality. While thep-(trans-4-n-alkylcyclohexyl)anilines were not liquid crystalline,N-alkyl substituted-p-(trans-4-n-alkylcyclohexyl) anilines such asN-(n-butyl)-p-(trans-4-n-pentylcyclohexyl)aniline 12a exhibit low temperature mesophases. A strong tendency to spontaneous homeotropic alignment was found in the nematic members of this series.