DICYANO N-HETEROCYCLIC COMPOUND, LIGHT-EMITTING MATERIAL, AND LIGHT-EMITTING ELEMENT IN WHICH SAME IS USED

• US 20190330162A1
• Filed: 01/09/2018
• Published: 10/31/2019
• Est. Priority Date: 01/13/2017
• Status: Active Grant

• Current Assignee: Kyushu University, Nippon Soda Company Limited
• Original Assignee: Kyushu University
• Inventors: YASUDA, Takuma, FURUE, Ryuhei, ISHIHARA, Hiroyuki, FUKUSHIMA, Yukio
• Granted Patent: US 11,279,680 B2
• Time in Patent Office: Days
• CPC Class Codes: C07D 241/36 condensed with carbocyclic rings or ring systems
• CPC Class Codes: C07D 401/10 linked by a carbon chain containing aromatic rings
• CPC Class Codes: C07D 401/14 containing three or more hetero rings
• CPC Class Codes: C07D 403/10 linked by a carbon chain containing aromatic rings
• CPC Class Codes: C07D 413/10 linked by a carbon chain containing aromatic rings
• CPC Class Codes: H10K 2101/20 Delayed fluorescence emission
• CPC Class Codes: H10K 2101/30 Highest occupied molecular orbital [HOMO], lowest unoccupied molecular orbital [LUMO] or Fermi energy values
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/631 Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
• CPC Class Codes: H10K 85/636 comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom
• CPC Class Codes: H10K 85/657 Polycyclic condensed heteroaromatic hydrocarbons
• CPC Class Codes: H10K 85/6572 comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
• CPC Class Codes: H10K 85/6574 comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes
• CPC Class Codes: Y02E 10/549 Organic PV cells

Abstract

Provided are: a dicyano N-heterocyclic compound represented by formula (I) (in the formula, R³ represents an electron-donating group, and n represents the number of repetitions of the content in brackets and is 0 or 1), the compound having exceptional heat resistance and light emission characteristics; a light-emitting material; and a light-emitting element in which the same is used.

Claims

1. A compound of formula (I):

2. The compound according to claim 1, wherein the electron-donating group is a phenyl group having a substituent, and the substituent is a hetero ring in which at least two substituted or unsubstituted aromatic rings are condensed, or a substituted or unsubstituted diarylamino group.

3. The compound according to claim 2, wherein R³ is at least one selected from the group consisting of groups of formula (d1) to formula (d4):

4. A light-emitting material comprising a compound of claim 1.

5. A light-emitting element comprising a light-emitting material of claim 4.