Back to results
US 9,067,947 B2Granted
Organic electroluminescent materials and devices
AssigneeUniversal Display Corporation
InventorsChun Lin, Bin Ma, Raymond Kwong, Alexey Borisovich Dyatkin, Wu Yonggang, Zeinab M. Elshenawy
Life of this patent
Estimating the term…
Abstract
A new class of compounds containing aza-dibenzothiophene or aza-dibenzofuran are provided. The compounds may be used in organic light emitting devices giving improved stability, improved efficiency, long lifetime and low operational voltage. In particular, the compounds may be used as the host material of an emissive layer having a host and an emissive dopant, or as a material in an enhancement layer.
Claims12
A compound having the formula:
- wherein m and n are 0, 1, 2, 3, or 4;
- wherein m+n is equal to or greater than 1;
- wherein X1, X2, X3, X4, X5, X6, X7, and X8 are independently selected from the group consisting of a carbon atom and a nitrogen atom;
- wherein at least one of X1, X2, X3, X4, X5, X6, X7, and X8 is a nitrogen atom;
- wherein Y is S or O;
- wherein R1 and R2 are independently selected from the group consisting of hydrogen, alkyl, aryl, and halide;
- and
- wherein at least one of R1 and R2 is selected from the group consisting of:
- wherein R′1, R′2, R′3, and R′4 represent mono, di, tri, tetra, or no substitutions;
- and
- wherein R′1, R′2, R′3, and R′4 are independently selected from the group consisting of hydrogen, alkyl, heteroalkyl, aryl, and heteroaryl.
8 more elements
A compound having the formula:
- wherein m and n are 0, 1, 2, 3, or 4;
- wherein m+n is equal to or greater than 1;
- wherein X1, X2, X3, X4, X5, X6, X7, and X8 are independently selected from the group consisting of a carbon atom and a nitrogen atom;
- wherein at least one of X1, X2, X3, X4, X5, X6, X7, and X8 is a nitrogen atom;
- wherein Y is S or O;
- wherein R1 and R2 are independently selected from the group consisting of hydrogen, alkyl, aryl and halide;
- and
- wherein at least one of R1 and R2 is selected from the group consisting of:
- wherein R′1, R′2, R′3, and R′4 represent mono, di, tri, tetra or no substitutions;
- and
- wherein R′1, R′2, R′3, and R′4 are independently selected from the group consisting of hydrogen, alkyl, heteroalkyl, aryl and heteroaryl.
8 more elements
A first device comprising an organic light emitting device, further comprising:
- an anode;
- a cathode;
- an organic layer disposed between the anode and the cathode, the organic layer further comprising a compound having the formula:
- wherein m and n are 0, 1, 2, 3, or 4;
- wherein m+n is equal to or greater than 1;
- wherein X1, X2, X3, X4, X5, X6, X7, and X8 are independently selected from the group consisting of a carbon atom and a nitrogen atom;
- wherein at least one of X1, X2, X3, X4, X5, X6, X7, and X8 is a nitrogen atom;
- wherein Y is S or O;
- wherein R1 and R2 are independently selected from the group consisting of hydrogen, alkyl, aryl and halide;
- and
- wherein at least one of R1 and R2 is selected from the group consisting of:
- wherein R′1, R′2, R′3, and R′4 represent mono, di, tri, tetra, or no substitutions;
- and
- wherein R′1, R′2, R′3, and R′4 are independently selected from the group consisting of hydrogen, alkyl, heteroalkyl, aryl and heteroaryl.
11 more elements
Dependencies are inferred from the claim text.