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

Claim 3:
4. The organic electroluminescence device according to claim 1, wherein
R2 is a group represented by a formula (11) below,, , where: Y1 to Y5 are each independently a nitrogen atom or CR14;
R14 is a hydrogen atom or a substituent;
when R14 is a substituent, the substituent is selected from the group consisting of a fluorine atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 carbon atoms, a substituted silyl group, a substituted phosphine oxide group, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms and a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
a plurality of R14 are optionally mutually the same or different; and
when at least two of the plurality of R14 are substituents, the substituents R14 are optionally mutually bonded to form a cyclic structure.