Back to results
US 2019/0198767 A1Published application
Phosphorescent OLED and Hole Transporting Materials for Phosphorescent OLEDS
AssigneeNovaled GmbH
InventorsMike Zöllner, Jens Wutke, Martin Burkhardt
Life of this patent
Estimating the term…
Abstract
The present invention relates to phosphorescent organic light-emitting diodes (OLEDs) including a hole-transporting or a hole-transporting and an electron-blocking layer including an N,N,N′,N′-tetraaryl-phenylene-3,5-diamine or an N,N,N′,N′-tetraaryl-1,1′-biphenyl-3,3′-diamine matrix compound and to new N,N,N′,N′-tetraarylsubstituted m-arylene diamine compounds useful as hole-transporting and electron-blocking layer matrices in phosphorescent OLEDs.
Claims6
A compound represented by general formula (I)
- wherein R1-R20 are independently selected from hydrogen, C1-C20 alkyl, C3-C20 cycloalkyl, C1-C20 alkoxy, C3-C20 cycloalkyloxy, C7-C20 arylalkyl, C6-C20 aryl, or C2-C20 heteroaryl;
- i) at least one of R1-R5 and at least one of R11-R15 is C6-C20 aryl or C2-C20 heteroaryl,
- ii) R1 with R2 as well as R11 with R12 form an aromatic ring, or
- iii) R2 with R3 as well as R12 with R13 form an aromatic ring;
- at least two of R6-R10 and at least two of R16-R20 are methyl, or at least one of R6-R10 and at least one of R16-R20 is selected from C2-C20 alkyl, C3-C20 cycloalkyl, C1-C20 alkoxy, C3-C20 cycloalkyloxy, C7-C20 arylalkyl, C6-C20 aryl, or C2-C20 heteroaryl,
- and
- x is an integer selected from 0 or 1, wherein when x is 0, R22 has the same meaning as R1-R20 wherein when x is 1, R21 and R22 are independently selected from hydrogen, C1-C10 alkyl, C3-C10 cycloalkyl, C1-C10 alkoxy, or C3-C10 cycloalkyloxy.
4 more elements
Dependencies are inferred from the claim text.