Blue luminescent compounds

US9711731B2 · kind B2 · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Norman Herron · Newark, US
• Weishi Wu · Landenberg, US
• Weiying Gao · Landenberg, US
• Kalindi Dogra · Wilmington, US
• Samuel R. Diamond · Wilmington, US
• Juergen Weber · Erlangen, DE
• Mark A. Guidry · Wilmington, US

Key dates

• Filing date: Oct 20, 2014
• Grant date: Jul 18, 2017
• Expiry date: Oct 20, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K85/626
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

There is provided a compound having Formula I:In the formula: R1, R1a, R2, and R2a are the same or different and are H, D, F, CN, alkyl, fluoroalkyl, aryl, heteroaryl, silyl, deuterated alkyl, deuterated partially-fluorinated alkyl, deuterated aryl, deuterated heteroaryl, deuterated silyl, alkoxy, aryloxy, fluoroalkoxy, siloxane, siloxy, deuteroalkoxy, deuteroaryloxy, deuterofluoroalkoxy, deuterosiloxane, or deuterosiloxy, with the proviso that at least one of R1 and R1a is heteroaryl or deuterated heteroaryl; R3, R3a, R4, R4a, R5, and R6 are the same or different at each occurrence and are D, F, CN, alkyl, fluoroalkyl, aryl, heteroaryl, silyl, deuterated alkyl, deuterated partially-fluorinated alkyl, deuterated aryl, deuterated heteroaryl, deuterated silyl, alkoxy, aryloxy, fluoroalkoxy, siloxane, siloxy, deuteroalkoxy, deuteroaryloxy, deuterofluoroalkoxy, deuterosiloxane, or deuterosiloxy, where adjacent groups selected from R3, R3a, R4, and R4a can be joined together to form a fused ring; R7 is the same or different at each occurrence and is alkyl, aryl, or deuterated analogs thereof, where two alkyl R7 groups can be joined together to make a cycloalkyl spiro ring, and where two…