Synthesis of Diindolocarbazoles by Ullmann Reaction: A Rapid Route to Ladder Oligo(p-aniline)s
摘要:
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.
A substituted indolocarbazole comprising at least one optionally substituted thienyl.
一种含有至少一个可选择取代的噻吩基团的取代吲哚吡喃。
Organic Electroluminescent Device
申请人:Kai Takahiro
公开号:US20120305904A1
公开(公告)日:2012-12-06
Disclosed is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, sufficiently secures driving stability, and has a simple configuration. This organic EL device has a light-emitting layer between an anode and a cathode piled one upon another on a substrate and the said light-emitting layer contains a fused polycyclic compound in which seven or more rings are fused together as a host material. The aforementioned fused polycyclic compound has a structure formed by fusing two or more indole rings to a carbazole ring. A specific example thereof is the compound represented by the following formula.