Organic electroluminescent materials and devices
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Abstract
Donor-acceptor compounds with nitrogen containing polyaromatics as the acceptor with emission originated from the charge transfer (CT) state is disclosed. The donor-acceptor compound is provided that has the structure of Formula 1 shown below:
wherein X1 to X12 is independently selected from the group consisting of C—R and N, wherein at least one of X1 to X12 is N, wherein each R is independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and at least one of the R comprises a donor group with at least two electron-donating nitrogens.
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Citations
25 Claims
- 1. A compound having the formula:
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7. A first device comprising a first organic light emitting device,
further comprising: -
an anode; a cathode; and an organic emissive layer, disposed between the anode and the cathode; wherein the organic emissive layer comprises a first emitting compound having a structure according to Formula 1 - View Dependent Claims (8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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12. The first device of 11, wherein S1 to S6 and A1-A2 are H.
Specification