Thermal activation delayed fluorescence material and application thereof

• Main Authors: SAUVAGE KUMAR PATHAK, LIU HE, YANG CHULUO
• Format: Patent
• Language: Chinese; English
• Published: 10.07.2020
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMISTRY; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; HETEROCYCLIC COMPOUNDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC CHEMISTRY; PAINTS; POLISHES; SEMICONDUCTOR DEVICES

The invention provides a thermal activation delayed fluorescence material and an application thereof. The thermal activation delayed fluorescence material has the following structure: a compound taking tris([1, 2, 4] triazole)[4, 3-a: 4', 3'-c: 4'', 3''-e][1, 3, 5] triazine as a receptor core has the property of thermally activated delayed fluorescence, and the receptor has a rigid planar structure, so that the thermal stability of the material is effectively improved; a large torsion angle between a donor unit and an acceptor unit can inhibit intermolecular accumulation; the solubility and the film-forming property are improved; meanwhile, the larger torsion angle can reduce overlapping of molecular front line orbits, so that the lowest excited singlet state-triplet state energy level difference is reduced, triplet state excitons can return to the singlet state through reverse intersystem crossing and finally return to the ground state in a radiation transition mode to emit fluorescence, the exciton utilizat