Discotic liquid crystalline hydrazone compounds: synthesis and mesomorphic properties.
[reaction: see text] 1,3,5-Trisacetoacetamidobenzene with three 1,3-diketo groups was synthesized by the reaction of 1,3,5-triaminobenzene with diketene. Discotic hydrazone compounds were prepared by the diazo coupling reaction between 1,3,5-trisacetoacetamidobenzene and diazonium salts of 4-alkyloxyphenylamines. The compounds existed in hydrazone forms exclusively, being stabilized by the intramolecular hydrogen bonds, and showed discotic nematic or columnar hexagonal mesophases.
Jeong
Min Ju
MJ
School of Materials Science and Engineering and Hyperstructured Organic Materials Research Center, Seoul National University, Korea.
Park
Jun Ha
JH
Lee
Changjin
C
Chang
Ji Young
JY