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US 2008/0138654 A1Published application
Electroluminescent Materials and Devices
AssigneeOled-T Limited
InventorsPoopathy Kathirgamanathan, Alexander Kit Lay, Muttulingam Kumaraverl, Subramaniam Ganeshamurugan
Life of this patent
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Abstract
A hole transporting or hole conducting material for use in electroluminescent devices is a diamino dianthracene.
Claims19
1-28. (canceled)
A hole transport compound which is a diamino dianthracene of formula
- where Ar1, Ar2, Ar3 and Ar4 are the same or different substituted or unsubstituted aromatic groups or together form a heterocyclic ring with the nitrogen atom.
Any of the following compounds:
- N*10*,N*10′*Bis-biphenyl-4-yl-N*10*,N*10′*-di-m-toly-[9,9′]bianthracenyl-10,10′-diamine;
- N*10*,N*10′*-Di-naphthen-yl-N*10*,N*10*-di-m-toly-[9,9′]bianthracenyl-10,10′-diamine;
- N*10*,N*10′*-Bis-(3-methoxy-phenyl)-N*10*,N*10′*-diphenyl[9,9′]bianthracenyl-10,10′-diamine;
- N*10*,N*10′*-Di-naphthen-2-yl-N*10*,N*10′*-di-phenyl-[9,9′ ]bianthracenyl-10,10′-diamine;
- and
2 more elements
A method for making a diamino dianthracene which comprises aminating 10,10′-dibromo-[9,9′]-bianthracene of formula
- with an amine of formula Ar1NHAr2 where Ar1 and Ar2 are the same or different substituted or unsubstituted aromatic groups or together with the nitrogen atom to which they are attached form a heterocyclic ring.
Dependencies are inferred from the claim text.