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

Claim 11:
12. The organic electroluminescence device according to claim 1, wherein
the partial structure represented by formula (22) is at least one of a group represented by formula (25), a group represented by formula (26), a group represented by formula (27), a group represented by formula (28), a group represented by formula (29) and a group represented by formula (20a), and is present in the second compound,, , where: in the formulae (25) to (29) and (20a), Y31 to Y38 are each independently a nitrogen atom or CR22;
R22 is a hydrogen atom or a substituent;
when R22 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 R22 being a non-fused ring;
X2 in the formulae (25) and (26) is a nitrogen atom;
X2 in the formulae (27) to (29) and (20a) is NR23, an oxygen atom or a sulfur atom; and
R23 is a substituent 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 fluorine 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 R23 being a non-fused ring.