| abstract |
A carbazole compound represented by the following formula: n n n n n n n n n n n n wherein, when m=1, n=0, Ar 1 , Ar 2 , Ar 3 and X 2 are C 6-50 aryl or C 4-50 heteroaryl, provided that Ar 1 and Ar 2 , or Ar 3 and X 2 may form together a ring; X 1 ═C 6-50 arylene; R 1 , R 2 , R 4 , R 5 and R 7 are H, halogen, amino, C 1-18 alkyl, C 1-18 alkoxy, C 6-50 aryl or C 4-50 heteroaryl, R 3 and R 6 are H, halogen, C 1-18 alkyl, C 1-18 alkoxy, C 6-50 aryl or C 4-50 heteroaryl; n when m=0, n=1-3, Ar 3 , Ar 4 and Ar 5 are C 6-50 aryl or C 4-50 heteroaryl, Ar 4 and Ar 5 may form together a ring; X 1 ═C 1-18 alkyl, C 6-50 aryl or C 4-50 heteroaryl; X 2 ═C 6-50 arylene; R 1 -R 7 are H, halogen, C 1-18 alkyl, C 1-18 alkoxy, C 6-50 aryl or C 4-50 heteroaryl; n when m=0, n=0, X 1 ═C 1-18 alkyl, C 6-50 aryl or C 4-50 heteroaryl; Ar 3 and X 2 are C 6-50 aryl or C 4-50 heteroaryl; R 2 ═H, halogen, C 1-18 alkyl, C 1-18 alkoxy; R 1 and R 3 -R 7 are H, halogen, C 1-18 alkyl, C 1-18 alkoxy, C 6-50 aryl or C 4-50 heteroaryl. The carbazole compound is suitable for an organic EL device. |