Organic electroluminescent materials and devices
A novel emitter compound having the formula Os(L 1 )(L 2 )(L 3 ) and a novel method of making such compounds are disclosed. In the formula Os(L 1 )(L 2 )(L 3 ), each of L 1 , L 2 , and L 3 is independently a bidentate ligand. The method includes (a) reacting a precursor of ligand L 1 with an osmium precursor to form a first intermediate product that has the ligand L 1 coordinated to the osmium, wherein the osmium precursor has the formula OsH x (PR 3 ) y , wherein x is an integer from 2 to 6 and y is an integer from 2 to 5, and R is selected from the group consisting of aryl, alkyl and cycloalkyl; (b) reacting the first intermediate product with a reducing agent to form a Os(II) second intermediate product; (c) reacting the second intermediate product with a coordinating solvent to form a third intermediate product; and (d) reacting a mixture of ligands L 2 and L 3 with said third intermediate product.
1. A method of making a compound having the formula Os(L 1 )(L 2 )(L 3 ), wherein each of L 1 , L 2 , and L 3 is independently a bidentate ligand, said method comprising:
(a) reacting a precursor of ligand L 1 with an osmium precursor to form a first intermediate product that has the ligand L 1 coordinated to the osmium, wherein the osmium precursor has the formula OsH x (PR 3 ) y , wherein x is an integer from 2 to 6 and y is an integer from 2 to 5, and R is selected from the group consisting of aryl, alkyl and cycloalkyl;
(b) reacting the first intermediate product with a reducing agent to form a Os(II) second intermediate product;
(c) reacting the second intermediate product with a coordinating solvent to form a third intermediate product; and
(d) reacting a mixture of precursors of ligands L 2 and L 3 with said third intermediate product;
wherein L 1 is
wherein one of L 2 and L 3 is
wherein the other of L 2 and L 3 is
and
wherein C is a monoanionic carbon coordinating atom, C′ is a neutral carbene coordinating atom, P and P′ are each a neutral phosphorus coordinating atom, O is a monoanionic oxygen coordinating atom, and O′ is a neutral oxygen coordinating atom.
2. A compound having the formula Os(L 1 )(L 2 )(L 3 ):
wherein L 1 , L 2 and L 3 are independently a bidentate ligand;
wherein L 1 is
wherein one of L 2 and L 3 is
wherein the other of L 2 and L 3 is
and
wherein C is a monoanionic carbon coordinating atom, C′ is a neutral carbene coordinating atom, P and P′ are each a neutral phosphorus coordinating atom, O is a monoanionic oxygen coordinating atom, and O′ is a neutral oxygen coordinating atom.
3. A first device comprising a first organic light emitting device, the first organic light emitting device comprising:
an anode;
a cathode; and
an organic layer, disposed between the anode and the cathode, comprising a compound having the formula Os(L 1 )(L 2 )(L 3 ),
wherein L 1 , L 2 and L 3 are independently a bidentate ligand,
wherein L 1 is
wherein one of L 2 and L 3 is
wherein the other of L 2 and L 3 is
and
wherein C is a monoanionic carbon coordinating atom, C′ is a neutral carbene coordinating atom, P and P′ are each a neutral phosphorus coordinating atom, O is a monoanionic oxygen coordinating atom, and O′ is a neutral oxygen coordinating atom.
4. The first device of claim 3 , wherein the first device is a consumer product.
5. The first device of claim 3 , wherein the first device is an organic light emitting device.
6. The first device of claim 3 , wherein the first device comprises a light panel.
7. The first device of claim 3 , wherein the organic layer is an emissive layer and the compound is an emissive dopant.
8. The first device of claim 3 , wherein the organic layer is an emissive layer and the compound is a non-emissive dopant.
9. The first device of claim 3 , wherein the organic layer further comprises a host material.
10. The compound of claim 2 , wherein L 1 is
wherein L 3 is
wherein R a , R b and R c are each independently no substitutions, up to the maximum possible substitutions;
wherein R a , R b , and R c , 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;
wherein two adjacent substituents of R a , R b , and R c are optionally joined to form a fused ring and may be further substituted; and
wherein the dash lines show the connection points to osmium.
11. The compound of claim 2 , wherein L 1 is selected from the group consisting of:
wherein the dash lines show the connection points to osmium.
12. The compound of claim 11 , wherein the compound is selected from the group consisting of:
Compound
number
L 1
L 2
L 3
26.
L 101
L 159
L 144
53.
L 101
L 159
L 145
80.
L 101
L 159
L 147
376.
L 102
L 159
L 144
402.
L 102
L 159
L 145
428.
L 102
L 159
L 147
713.
L 103
L 159
L 144
738.
L 103
L 159
L 145
763.
L 103
L 159
L 147
1037.
L 104
L 159
L 144
1061.
L 104
L 159
L 145
1085.
L 104
L 159
L 147
1348.
L 105
L 159
L 144
1371.
L 105
L 159
L 145
1394.
L 105
L 159
L 147
1646.
L 106
L 159
L 144
1668.
L 106
L 159
L 145
1690.
L 106
L 159
L 147
1931.
L 107
L 159
L 144
1952.
L 107
L 159
L 145
1973.
L 107
L 159
L 147
2203.
L 108
L 159
L 144
2223.
L 108
L 159
L 145
2243.
L 108
L 159
L 147
2462.
L 109
L 159
L 144
2481.
L 109
L 159
L 145
2500.
L 109
L 159
L 147
2708.
L 110
L 159
L 144
2726.
L 110
L 159
L 145
2744.
L 110
L 159
L 147
2941.
L 111
L 159
L 144
2958.
L 111
L 159
L 145
2705.
L 111
L 159
L 147
2891.
L 112
L 159
L 144
2907.
L 112
L 159
L 145
2923.
L 112
L 159
L 147
3098.
L 113
L 159
L 144
3113.
L 113
L 159
L 145
3128.
L 113
L 159
L 147
3292.
L 114
L 159
L 144
3306.
L 114
L 159
L 145
3320.
L 114
L 159
L 147
3473.
L 115
L 159
L 144
3486.
L 115
L 159
L 145
3499.
L 115
L 159
L 147
3653.
L 116
L 159
L 145
3665.
L 116
L 159
L 147
3796.
L 117
L 159
L 144
3807.
L 117
L 159
L 145
3818.
L 117
L 159
L 147
3938.
L 118
L 159
L 144
3948.
L 118
L 159
L 145
3958.
L 118
L 159
L 147
4067.
L 119
L 159
L 144
4076.
L 119
L 159
L 145
4085.
L 119
L 159
L 147
wherein L 144 to L 145 , L 147 , and L 159 have the following meanings:
wherein the dash lines show the connection points to osmium.
13. The compound of claim 2 , wherein L 2 s elected from the group consisting of:
wherein the dash lines show the connection points to osmium.
14. The first device of claim 3 , wherein L 1 is
and
wherein L 3 is
wherein R a , R b and R c are each independently no substitutions, up to the maximum possible substitutions;
wherein R a , R b , and R c , 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;
wherein two adjacent substituents of R a , R b , and R c are optionally joined to form a fused ring and may be further substituted; and
wherein the dash lines show the connection points to osmium.
15. The first device of claim 3 , wherein L 1 is selected from the group consisting of:
wherein the dash lines show the connection points to osmium.
16. The first device of claim 15 , wherein the compound is selected from the group consisting of:
Compound
number
L 1
L 2
L 3
26.
L 101
L 159
L 144
53.
L 101
L 159
L 145
80.
L 101
L 159
L 147
376.
L 102
L 159
L 144
402.
L 102
L 159
L 145
428.
L 102
L 159
L 147
713.
L 103
L 159
L 144
738.
L 103
L 159
L 145
763.
L 103
L 159
L 147
1037.
L 104
L 159
L 144
1061.
L 104
L 159
L 145
1085.
L 104
L 159
L 147
1348.
L 105
L 159
L 144
1371.
L 105
L 159
L 145
1394.
L 105
L 159
L 147
1646.
L 106
L 159
L 144
1668.
L 106
L 159
L 145
1690.
L 106
L 159
L 147
1931.
L 107
L 159
L 144
1952.
L 107
L 159
L 145
1973.
L 107
L 159
L 147
2203.
L 108
L 159
L 144
2223.
L 108
L 159
L 145
2243.
L 108
L 159
L 147
2462.
L 109
L 159
L 144
2481.
L 109
L 159
L 145
2500.
L 109
L 159
L 147
2708.
L 110
L 159
L 144
2726.
L 110
L 159
L 145
2744.
L 110
L 159
L 147
2941.
L 111
L 159
L 144
2958.
L 111
L 159
L 145
2705.
L 111
L 159
L 147
2891.
L 112
L 159
L 144
2907.
L 112
L 159
L 145
2923.
L 112
L 159
L 147
3098.
L 113
L 159
L 144
3113.
L 113
L 159
L 145
3128.
L 113
L 159
L 147
3292.
L 114
L 159
L 144
3306.
L 114
L 159
L 145
3320.
L 114
L 159
L 147
3473.
L 115
L 159
L 144
3486.
L 115
L 159
L 145
3499.
L 115
L 159
L 147
3653.
L 116
L 159
L 145
3665.
L 116
L 159
L 147
3796.
L 117
L 159
L 144
3807.
L 117
L 159
L 145
3818.
L 117
L 159
L 147
3938.
L 118
L 159
L 144
3948.
L 118
L 159
L 145
3958.
L 118
L 159
L 147
4067.
L 119
L 159
L 144
4076.
L 119
L 159
L 145
4085.
L 119
L 159
L 147
wherein L 144 to L 145 , L 147 , and L 159 have the following meanings:
wherein the dash lines show the connection points to osmium.
17. The first device of claim 3 , wherein L 2 is selected from the group consisting of:
wherein the dash lines show the connection points to osmium.