US 6,982,330 B2 | ||
Carbazole based compound, coloring material, colored high molecular organic material and electroluminescent material | ||
Kiyoshi Itou, Tokyo (Japan) | ||
Assigned to Dai Nippon Printing Co., LTD, Tokyo-To (Japan) | ||
Filed on Mar. 24, 2003, as Appl. No. 10/395,528. | ||
Claims priority of application No. 2002-084570 (JP), filed on Mar. 25, 2002. | ||
Prior Publication US 2003/0214228 A1, Nov. 20, 2003 | ||
Int. Cl. C07D 251/54 (2006.01); C08K 5/34 (2006.01); H01J 63/04 (2006.01) |
U.S. Cl. 544—198 | 4 Claims |
1. A carbazole based compound represented by the following formula (1): ![]() wherein R is a substituent selected from the group consisting of a hydrogen atom, an alkyl group, an alkyl ether group, a sulfoamino group, a carbon cyclic group, a heterocyclic group and an aromatic cyclic group, “n” is integer, where at least one substituent other than the hydrogen atom are introduced and each substituent may be the same or different. |