Patent ID: 11968894
Assignee: IDEMITSU KOSAN CO., LTD.
Field: Basic materials chemistry (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 10:
11. The organic electroluminescence device according to claim 1, wherein
the partial structure represented by formula (21) is at least one of a group represented by formula (23) and a group represented by (24) and is present in the second compound,, , where: in formulae (23) and (24), Y21, Y22, Y24 and Y26 are each independently a nitrogen atom or CR21;
R21 is a hydrogen atom or a substituent;
when R21 is a substituent, the substituent is selected from the group consisting of a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted fluoroalkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, a substituted silyl group, a substituted germanium group, a substituted phosphine oxide group, a halogen atom, a cyano group, a nitro group, and a carboxy group, the substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms in R21 being a non-fused ring.