Phenothiazines, S-oxides, and S,S-dioxides as well as phenoxazines as emitters for OLEDs

US8029919B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Thomas Gessner · Ypsilanti, US
• Hans-Werner Schmidt · Bayreuth, DE
• Mukundan Thelakkat · Bayreuth, DE
• Markus Baete · Kulmain, DE

Key dates

• Filing date: Nov 25, 2005
• Grant date: Oct 4, 2011
• Expiry date: May 8, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S428/917
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The use of phenoxazine, phenothiazine, phenothiazine S-oxide or phenothiazine S,S-dioxide derivatives as emitter substances in organic light-emitting diodes, an organic light-emitting diode comprising a light-emitting layer, the light-emitting layer comprising at least one phenoxazine, phenothiazine, phenothiazine S-oxide or phenothiazine S,S-dioxide derivative as an emitter substance, and a light-emitting layer comprising or consisting of the aforementioned phenoxazine, phenothiazine-phenothiazine, phenothiazine S-oxide or phenothiazine S,S-dioxide derivative as an emitter substance, a hole- and exciton-blocking layer comprising or consisting of the aforementioned phenoxazine derivative, phenothiazine derivative, phenothiazine S-oxide derivative or phenothiazine S,S-dioxide derivative, and a device which comprises an inventive organic light-emitting diode. The present invention further relates to specific phenothiazine S,S-dioxide derivatives, phenothiazine S-oxide derivatives and phenothiazine derivatives and production processes thereof, and to their use in organic light-emitting diodes.