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US 2017/0288157 A1Published application
Organic Electroluminescent Materials and Devices
AssigneeUniversal Display Corporation
InventorsScott Joseph, Pierre-Luc T. Boudreault, Chuanjun Xia
Life of this patent
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Abstract
This invention discloses novel ligands for metal complexes. These ligands comprise a new side chain, namely silacycloalkane, which could increase the dopants efficiency, tune the emission color, and enhance the lifetime.
Claims31
A composition comprising a first compound;
- wherein the first compound is capable of functioning as an emitter in an organic light emitting device at room temperature;
- wherein the first compound has at least one aromatic ring and at least one substituent R;
- wherein each of the at least one substituent R is directly bonded to one of the aromatic rings;
- wherein each of the at least one substituent R has the formula
- wherein L is a direct bond or an organic linker;
- wherein ring A is a non-aromatic cyclic group containing X;
- wherein L bonds to ring A at a carbon atom C;
- wherein X is Si or Ge;
- wherein RX3 represents mono to the possible maximum number of substitution, or no substitution;
- wherein RX1, RX2 and RX3 are each 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
- wherein any adjacent substituents RX1, RX2 and RX3 are optionally joined or fused into a ring.
9 more elements
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An organic light-emitting device (OLED) comprising:
- an anode;
- a cathode;
- and
- an organic layer, disposed between the anode and the cathode, comprising a first compound;
- wherein the first compound is capable of functioning as an emitter in an organic light emitting device at room temperature;
- wherein the first compound has at least one aromatic ring and at least one substituent R;
- wherein each of the at least one substituent R is directly bonded to one of the aromatic rings;
- wherein each of the at least one substituent R has the formula
- wherein L is a direct bond or an organic linker;
- wherein ring A is a non-aromatic cyclic group containing X;
- wherein L bonds to ring A at a carbon atom C;
- wherein X is Si or Ge;
- wherein RX3 represents mono to the possible maximum number of substitution, or no substitution;
- wherein RX1, RX2 and RX3 are each 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
- wherein any adjacent substituents RX1, RX2 and RX3 are optionally joined or fused into a ring.
13 more elements
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A consumer product comprising an organic light-emitting device (OLED) comprising:
- an anode;
- a cathode;
- and
- an organic layer, disposed between the anode and the cathode, comprising a first compound;
- wherein the first compound is capable of functioning as an emitter in an organic light emitting device at room temperature;
- wherein the first compound has at least one aromatic ring and at least one substituent R;
- wherein each of the at least one substituent R is directly bonded to one of the aromatic rings;
- wherein each of the at least one substituent R has the formula
- wherein L is a direct bond or an organic linker;
- wherein ring A is a non-aromatic cyclic group containing X;
- wherein L bonds to ring A at a carbon atom C;
- wherein X is Si or Ge;
- wherein RX3 represents mono to the possible maximum number of substitution, or no substitution;
- wherein RX1, RX2 and RX3 are each 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
- wherein any adjacent substituents RX1, RX2 and RX3 are optionally joined or fused into a ring.
13 more elements
Dependencies are inferred from the claim text.