title: Synthesis of diindolocarbazoles by Ullmann reaction: a rapid route to ladder oligo(p-aniline)s.
abstract: [structure: see text] New and facile synthesis of symmetric diindolocarbazoles was developed using the copper-catalyzed Ullmann reaction. The key step is a double-intramolecular cyclization reaction realized on N-alkyl-3,6-dibromo-2,7-bis(2'aminophenyl)carbazole derivatives which offers the desired symmetric ladder oligo(p-aniline)s. Depending upon the nature of the side- and/or end-groups, well-defined thin films and/or semiladder polymers could be obtained. These electroactive ladder oligomers may have great potential in organic electronics.
authors.affiliation: Department of Chemistry, Université Laval, Quebec City, QC, Canada G1K 7P4.
authors.forename: Salem
authors.initials: S
authors.lastname: Wakim
authors.forename: Jimmy
authors.initials: J
authors.lastname: Bouchard
authors.forename: Nicolas
authors.initials: N
authors.lastname: Blouin
authors.forename: Alexandre
authors.initials: A
authors.lastname: Michaud
authors.forename: Mario
authors.initials: M
authors.lastname: Leclerc