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US 7,655,322 B2Granted
OLEDs utilizing macrocyclic ligand systems
AssigneesUniversity of Southern California, The Trustees of Princeton University
InventorsStephen R. Forrest, Mark E. Thompson
Life of this patent
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Abstract
The present invention relates to efficient organic light emitting devices (OLEDs), and more specifically to organic materials used in such devices. More specifically, the present invention relates to materials with improved stability and efficiency when incorporated into an OLED.
Claims2
An organic light emitting device comprising:
- a) an anode;
- b) a cathode;
- and
- c) an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a compound having the structure III:
- wherein
- M is Pt or Pd;
- Z2 is a linking group selected from bivalent alkyl groups and silanes, and the two phenyl groups are linked by one carbon atom or one silicon atom of the linking group;
- the phenyl groups may be optionally substituted with one or more substituents J;
- each substituent J is independently R′, O—R′, N(R′)2, SR′, C(O)R′, C(O)OR′, C(O)NR′2, CN, CF3, NO2, SO2, SOR′, SO3R′, or halo, and any two J groups on adjacent ring atoms can optionally form a 5- or 6-member cyclic group;
- and
- each R′ is independently H, alkyl, alkenyl, alkynyl, heteroalkyl, aralkyl, aryl or heteroaryl.
8 more elements
An organometallic tetradentate compound having a structure III:
- wherein
- M is Pt or Pd;
- Z2 is a linking group selected from bivalent alkyl groups and silanes, and the two phenyl groups are linked by one carbon atom or one silicon atom of the linking group;
- the phenyl groups may be optionally substituted with one or more substituents J;
- each substituent J is independently R′, O—R′, N(R′)2, SR′, C(O)R′, C(O)OR′, C(O)NR′2, CN, CF3, NO2, SO2, SOR′, SO3R′, or halo, and any two J groups on adjacent ring atoms can optionally form a 5- or 6-member cyclic group;
- and
- each R′ is independently H, alkyl, alkenyl, alkynyl, heteroalkyl, aralkyl, aryl or heteroaryl.
4 more elements
Dependencies are inferred from the claim text.