Room‐Temperature Columnar Liquid‐Crystalline Perylene Imido‐Diesters by a Homogeneous One‐Pot Imidification–Esterification of Perylene‐3,4,9,10‐tetracarboxylic Dianhydride

摘要: The reaction of PTCDA (perylene-3,4,9,10-tetracarboxylic dianhydride) with an alcohol, a bromoalkane, and alkylamine in the presence DBU DMF yields imido-diestersubstituted perylenes. is limited to polar alcohols such as propanol, but longer alkyl chains are efficiently introduced second step by group exchange using selective acidic ester hydrolysis that leaves imide intact. This amine-efficient approach imidodiesters used obtain acceptor-type self-assembling dyes form hexagonal columnar liquid crystalline phase at room temperature.