Synthesis and study of N,N‐disubstituted 4‐[(4‐aminophenyl)diazenyl]benzylidene‐4′‐alkylanilines

Abstract

A series of N,N‐disubstituted‐4‐[(4‐aminophenyl)diazenyl]benzylidene‐4′‐alkylanilines (azo dyes) were synthesized from the reaction of the corresponding benzaldehyde with alkylanilines. These azo dyes exhibit nematic and SmC phases on heating. Their order parameter, photo‐stability and miscibility were studied by investigation of a representative sample.

Acknowledgements

This work was financially supported by the National Chi Nan University and the National Science Council (NSC 93‐2113‐M‐260‐002). The National Center of High‐Performing Computing and the Institute of Chemistry, Academia Sinica are also highly appreciated for providing the most helpful Beilstein database system and library service, respectively.