Patent ID: 11917907
Assignee: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 7:
8. The organic electroluminescent device according to claim 1, wherein in formula 3, A4 and A5, each independently, is selected from the group consisting of a substituted or unsubstituted phenyl, a substituted or unsubstituted biphenyl, a substituted or unsubstituted terphenyl, a substituted or unsubstituted naphthyl, a substituted or unsubstituted phenanthrenyl, a substituted or unsubstituted anthracenyl, a substituted or unsubstituted pyrenyl, a substituted or unsubstituted tetracenyl, a substituted or unsubstituted chrysenyl, a substituted or unsubstituted fluorenyl, a substituted or unsubstituted benzofluorenyl, a substituted or unsubstituted fluoranthenyl, a substituted or unsubstituted triphenylenyl, and a substituted or unsubstituted spirobifluorenyl; and t represents an integer of 1 or 2.