Organic electroluminescent materials and devices
A compound having a structure of Formula I: Formula I, is disclosed. In the structure of Formula I: X is selected from a group consisting of O, S and Se; G 2 and G 3 are each independently selected from benzene, biphenyl, fluorene, naphthalene, phenanthrene, triphenylene, dibenzofuran, dibenzothiophene, dibenzoselenophene, pyridine, pyrimidine, quinoline, isoquinoline, phenanthroline, aza-fluorene, and combinations thereof; L is selected from phenyl, biphenyl, terphenyl and pyridine, and combinations thereof; G 2 , G 3 and L are each optionally further substituted with one or more unfused substituents; R 1 , R 2 , and each R 3 , R 4 , R 5 and R 6 are an unfused substituent selected from hydrogen, deuterium, alkyl, alkoxyl, cycloalkyl, cycloalkoxyl, halogen, nitro, nitrile, silyl, benzene, biphenyl, terphenyl, pyridine, and combinations thereof; and R 1 and R 2 are optionally joined to form a ring. Formulations and devices, such as an OLEDs, that include the compound of Formula I, and, optionally a co-host, are also described.
1. A compound having a structure of Formula I:
wherein X is selected from a group consisting of O, S and Se;
wherein G 2 and G 3 are each independently selected from the group consisting of benzene, biphenyl, fluorene, naphthalene, phenanthrene, triphenylene, dibenzofuran, dibenzothiophene, dibenzoselenophene, pyridine, pyrimidine, quinoline, isoquinoline, phenanthroline, aza-fluorene, and combinations thereof;
wherein L is selected from the group consisting of phenyl, biphenyl, terphenyl and pyridine, and combinations thereof;
wherein G 2 , G 3 and L are each optionally further substituted with one or more unfused substituents selected from the group consisting of deuterium, alkyl, alkoxyl, cycloalkyl, cycloalkoxyl, halogen, nitro, nitrile, silyl, benzene, biphenyl, terphenyl, pyridine, and combinations thereof;
wherein R 3 represents mono, di, tri, or tetra substitution, or no substitution;
wherein R 4 , R 5 and R 6 each independently represent mono, di, or tri substitution, or no substitution;
wherein R 1 , R 2 , and each R 3 , R 4 , R 5 and R 6 are an unfused substituent selected from the group consisting of hydrogen, deuterium, alkyl, alkoxyl, cycloalkyl, cycloalkoxyl, halogen, nitro, nitrile, silyl, benzene, biphenyl, terphenyl, pyridine, and combinations thereof; and
wherein R 1 and R 2 are optionally joined to form a ring.
2. The compound of claim 1 , wherein R 1 and R 2 are not joined to form a ring.
3. The compound of claim 1 , wherein R 1 and R 2 are joined to form a ring.
4. The compound of claim 1 , wherein R 1 , R 2 , and each R 3 , R 4 , R 5 and R 6 are an unfused substituent selected from the group consisting of hydrogen, deuterium, halogen, nitro, methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, isopropyl, isobutyl, tert-butyl, tert-butylmethyl, 2-ethylhexyl, 2-ethyloctyl, cyclopentyl, cyclohexyl, benzene, biphenyl, terphenyl, pyridine, naphthalene, quinoline, and combinations thereof.
5. The compound of claim 1 , wherein the compound is selected from the group consisting of:
6. The compound of claim 1 , wherein the compound has a structure of Formula II:
7. The compound of claim 1 , wherein G 2 and G 3 are each independently a moiety selected from the group consisting of:
wherein R 1′ and R 2′ are independently selected from the group consisting of hydrogen, deuterium, methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, isopropyl, isobutyl, terbutyl, terbutylmethyl, 2-ethylhexyl, 2-ethyloctyl, cyclopentyl, cyclohexyl, benzene, biphenyl, terphenyl, and combinations thereof;
wherein R 1′ and R 2′ are optionally joined to form a ring; and
wherein X′ is selected from a group consisting of O, S and Se.
8. The compound of claim 1 , wherein L is a moiety selected from the group consisting of:
9. The compound of claim 1 , wherein the compound is selected from the group consisting of:
Compounds 1 through 3, each represented
the formula:
where in Compound 1: X = O,
in Compound 2, X = S, and
in Compound 3, X = Se,
Compounds 4 through 6, each represented
by the formula:
where in Compound 4: X = O,
in Compound 5, X = S, and
in Compound 6, X = Se,
Compounds 7 through 9, each represented
by the formula:
where in Compound 7: X = O,
in Compound 8, X = S, and
in Compound 9, X = Se,
Compounds 10 through 12, each represented
by the formula:
where in Compound 10: X = O,
in Compound 11, X = S, and
in Compound 12, X = Se,
Compounds 13 through 15, each represented
by the formula:
where in Compound 13: X = O,
in Compound 14, X = S, and
in Compound 15, X = Se,
Compounds 16 through 18, each represented
by the formula:
where in Compound 16: X = O,
in Compound 17, X = S, and
in Compound 18, X = Se,
Compounds 19 through 21, each represented
by the formula:
where in Compound 19: X = O,
in Compound 20, X = S, and
in Compound 21, X = Se,
Compounds 22 through 24, each represented
by the formula:
where in Compound 22: X = O,
in Compound 23, X = S, and
in Compound 24, X = Se,
Compounds 25 through 27, each represented
by the formula:
where in Compound 25: X = O,
in Compound 26, X = S, and
in Compound 27, X = Se,
Compounds 28 through 30, each represented
by the formula:
where in Compound 28: X = O,
in Compound 29, X = S, and
in Compound 30, X = Se,
Compounds 31 through 33, each represented
by the formula:
where in Compound 31: X
in Compound 32, X = S, and
in Compound 33, X = Se,
Compounds 34 through 36, each represented
by the formula:
where in Compound 34: X = O,
in Compound 35, X = S, and
in Compound 36, X = Se,
Compounds 37 through 39, each represented
by the formula:
where in Compound 37: X = O,
in Compound 38, X = S, and
in Compound 39, X = Se,
Compounds 40 through 42, each represented
by the formula:
where in Compound 40: X = O,
in Compound 41, X = S, and
in Compound 42, X = Se,
Compounds 43 through 45, each represented
by the formula:
where in Compound 43: X = O,
in Compound 44, X = S, and
in Compound 45, X = Se,
Compounds 46 through 48, each represented
by the formula:
where in Compound 46: X = O,
in Compound 47, X = S, and
in Compound 48, X = Se,
Compounds 49 through 51, each represented
by the formula:
where in Compound 49: X = O,
in Compound 50, X = S, and
in Compound 51, X = Se,
Compounds 52 through 54, each represented
by the formula:
where in Compound 52: X = O,
in Compound 53, X = S, and
in Compound 54, X = Se,
Compounds 55 through 57, each represented
by the formula:
where in Compound 55: X = O,
in Compound 56, X = S, and
in Compound 57, X = Se,
Compounds 58 through 60, each representedby the formula:
by the formula:
where in Compound 58: X = O,
in Compound 59, X = S, and
in Compound 60, X = Se,
Compounds 61 through 63, each represented
by the formula:
where in Compound 61: X = O,
in Compound 62, X = S, and
in Compound 63, X = Se,
Compounds 64 through 66, each represented
by the formula:
where in Compound 64: X = O,
in Compound 65, X = S, and
in Compound 66, X = Se,
Compounds 67 through 69, each represented
by the formula:
where in Compound 67: X = O,
in Compound 68, X = S, and
in Compound 69, X = Se,
Compounds 70 through 72, each represented
by the formula:
where in Compound 70: X = O,
in Compound 71, X = S, and
in Compound 72, X = Se,
Compounds 73 through 75, each represented
by the formula:
where in Compound 73: X = O
in Compound 74, X = S, and
in Compound 75, X = Se,
Compounds 76 through 78, each represented
by the formula:
where in Compound 76: X = O,
in Compound 77, X = S, and
in Compound 78, X = Se,
Compounds 79 through 81, each represented
by the formula:
where in Compound 79: X = O,
in Compound 80, X = S, and
in Compound 81, X = Se,
Compounds 79 through 81, each represented
by the formula:
where in Compound 79: X = O,
in Compound 80, X = S, and
in Compound 81, X = Se,
Compounds 82 through 84, each represented
by the formula:
where in Compound 82: X = O,
in Compound 83, X = S, and
in Compound 84, X = Se,
Compounds 85 through 87, each represented
by the formula:
where in Compound 85: X = O,
in Compound 86, X = S, and
in Compound 87, X = Se,
Compounds 88 through 90 each represented
by the formula:
where in Compound 88: X = O,
in Compound 89, X = S, and
in Compound 90, X = Se,
Compounds 91 through 93 eachrepresented
by the formula:
where in Compound 91: X = O,
in Compound 92, X = S, and
in Compound 93, X = Se,
Compounds 94 through 96, each represented
by the formula:
where in Compound 94: X = O,
in Compound 95, X = S, and
in Compound 96, X = Se, and
Compounds 97 through 99, each represented
by the formula:
where in Compound 97: X = O,
in Compound 98, X = S, and
in Compound 99, X = Se.
10. A device comprising one or more organic light emitting devices, at least one of the one or more organic light emitting devices comprising:
an anode;
a cathode; and
an organic layer, disposed between the anode and the cathode, comprising a compound having Formula I:
wherein X is selected from a group consisting of 0, S and Se;
wherein G 2 and G 3 are each independently selected from the group consisting of benzene, biphenyl, fluorene, naphthalene, phenanthrene, triphenylene, dibenzofuran, dibenzothiophene, dibenzoselenophene, pyridine, pyrimidine, quinoline, isoquinoline, phenanthroline, aza-fluorene, and combinations thereof;
wherein L is selected from the group consisting of phenyl, biphenyl, terphenyl and pyridine, and combinations thereof;
wherein G 2 , G 3 and L are each optionally further substituted with one or more unfused substituents selected from the group consisting of deuterium, alkyl, alkoxyl, cycloalkyl, cycloalkoxyl, halogen, nitro, nitrile, silyl, benzene, biphenyl, terphenyl, pyridine, and combinations thereof;
wherein R 3 represents mono, di, tri, or tetra substitution, or no substitution;
wherein R 4 , R 5 and R 6 each independently represent mono, di, or tri substitution, or no substitution;
wherein R 1 , R 2 , and each R 3 , R 4 , R 5 and R 6 are an unfused substituent selected from the group consisting of hydrogen, deuterium, alkyl, alkoxyl, cycloalkyl, cycloalkoxyl, halogen, nitro, nitrile, silyl, benzene, biphenyl, terphenyl, pyridine, and combinations thereof; and
wherein R 1 and R 2 are optionally joined to form a ring.
11. The device of claim 10 , wherein the organic layer is an emissive layer and the compound of Formula I is a host.
12. The device of claim 10 , wherein the organic layer further comprises an emissive dopant, wherein the emissive dopant is a transition metal complex having at least one ligand selected from the group consisting of:
wherein R a , R b , R c , and R d may represent mono, di, tri, or tetra substitution, or no substitution;
wherein R a , R b , R c , and R d are 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 two adjacent substituents of R a , R b , R c , and R d are optionally joined to form a fused ring or form a multidentate ligand.
13. The device of claim 10 , wherein the organic layer is a blocking layer and the compound having Formula I is a blocking material in the organic layer, or wherein the organic layer is an electron transporting layer and the compound having Formula I is an electron transporting material in the organic layer.
14. The device of claim 10 , wherein the device is selected from the group consisting of a consumer product, an electronic component module, an organic light-emitting device, and a lighting panel.
15. The device according to claim 10 ,
wherein the organic layer comprises a first composition comprising a mixture of the first compound and a second compound;
wherein the second compound has a structure of Formula III:
wherein X is selected from the group consisting of S, O, Se, and NR′,
wherein L 2 is selected from a group consisting of direct bond, phenyl, biphenyl, terphenyl, fluorene, triphenylene, dibenzofuran, dibenzothiophene, dibenzoselenophene, carbazole and pyridine, and combinations thereof,
wherein L 2 is optionally further substituted with one or more substituents selected from a group consisting of hydrogen, deuterium, alkyl, alkoxyl, cycloalkyl, cycloalkoxyl, halogen, nitro, nitrile, silyl, aryl, heteroaryl, and combinations thereof,
wherein R′, R 7 , R 8 , R 9 , R 10 and R 11 are each an unfused substituent selected from the group consisting of hydrogen, deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acid, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof,
wherein R 7 , R 8 and R 11 each independently represent mono, di, tri, or tetra substitution, or no substitution, and
wherein R 9 and R 10 each independently represent mono, di, or tri substitution, or no substitution.
16. A composition of materials comprising a first compound and a second compound,
wherein the first compound has a structure of Formula I:
wherein X is selected from a group consisting of O, S and Se,
wherein G 2 and G 3 are each independently selected from the group consisting of benzene, biphenyl, fluorene, naphthalene, phenanthrene, triphenylene, dibenzofuran, dibenzothiophene, dibenzoselenophene, pyridine, pyrimidine, quinoline, isoquinoline, phenanthroline, aza-fluorene, and combinations thereof,
wherein L is selected from the group consisting of phenyl, biphenyl, terphenyl and pyridine, and combinations thereof,
wherein G 2 , G 3 and L are each optionally further substituted with one or more unfused substituents selected from the group consisting of deuterium, alkyl, alkoxyl, cycloalkyl, cycloalkoxyl, halogen, nitro, nitrile, silyl, benzene, biphenyl, terphenyl, pyridine, and combinations thereof,
wherein R 3 represents mono, di, tri, or tetra substitution, or no substitution,
wherein R 4 , R 5 and R 6 each independently represent mono, di, or tri substitution, or no substitution,
wherein R 1 , R 2 , and each R 3 , R 4 , R 5 and R 6 are an unfused substituent selected from the group consisting of hydrogen, deuterium, alkyl, alkoxyl, cycloalkyl, cycloalkoxyl, halogen, nitro, nitrile, silyl, benzene, biphenyl, terphenyl, pyridine, and combinations thereof, and
wherein R 1 and R 2 are optionally joined to form a ring; and
wherein the second compound has a structure of Formula III:
wherein X is selected from the group consisting of S, O, Se, and NR′,
wherein L 2 is selected from a group consisting of direct bond, phenyl, biphenyl, terphenyl, fluorene, triphenylene, dibenzofuran, dibenzothiophene, dibenzoselenophene, carbazole and pyridine, and combinations thereof,
wherein L 2 is optionally further substituted with one or more substituents selected from a group consisting of hydrogen, deuterium, alkyl, alkoxyl, cycloalkyl, cycloalkoxyl, halogen, nitro, nitrile, silyl, aryl, heteroaryl, and combinations thereof,
wherein R′, R 7 , R 8 , R 9 , R 10 and R 11 are each an unfused substituent selected from the group consisting of hydrogen, deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acid, ester, nitrile, isonitrile, sulfanyl, sulfanyl, sulfonyl, phosphino, and combinations thereof,
wherein R 7 , R 8 and R 11 each independently represent mono, di, tri, or tetra substitution, or no substitution, and
wherein R 9 and R 10 each independently represent mono, di, or tri substitution, or no substitution.
17. The composition of claim 16 , wherein the second compound is selected from the group consisting of:
Compounds H1 through H3, each represented
by the formula:
where in Compound H1: X = O,
in Compound H2, X = S, and
in Compound H3, X = Se,
Compounds H4 through H6, each represented
by the formula:
where in Compound H4: X = O,
in Compound H5, X = S, and
in Compound H6, X = Se,
Compounds H7 through H9, each represented
by the formula:
where in Compound H7: X = O,
in Compound H8, X = S, and
in Compound H9, X = Se,
Compounds H10 through H12, each represented
by the formula:
where in Compound H10: X = O,
in Compound H11, X = S, and
in Compound H12, X = Se,
Compounds H13 through H15, each represented
by the formula:
where in Compound H13: X = O,
in Compound H14, X = S, and
in Compound H15, X = Se,
Compounds H16 through H18, each represented
by the formula:
where in Compound H16: X = O,
in Compound H17, X = S, and
in Compound H18, X = Se,
Compounds H19 through H21, each represented
by the formula:
where in Compound H19: X = O,
in Compound H20, X = S, and
in Compound H21, X = Se,
Compounds H22 through H24, each represented
by the formula:
where in Compound H22: X = O,
in Compound H23, X = S, and
in Compound H24, X = Se,
Compounds H25 through H27, each represented
by the formula:
where in Compound H25: X = O,
in Compound H26, X = S, and
in Compound H27, X = Se, and
Compounds H28 through H30, each represented
by the formula:
where in Compound H28: X = O,
in Compound H29, X = S, and
in Compound H30, X = Se.
18. The composition of claim 16 , wherein the composition is selected from the group consisting of:
Compositions
First compound
Second compound
CP1
Compound 2
Compound H2
CP2
Compound 2
Compound H5
CP3
Compound 2
Compound H8
CP4
Compound 2
Compound H17
CP5
Compound 2
Compound H26
CP6
Compound 5
Compound H11
CP7
Compound 5
Compound H14
CP8
Compound 5
Compound H29
CP9
Compound 65
Compound H2
CP10
Compound 65
Compound H5.
19. The composition of claim 16 , wherein the first compound has an evaporation temperature T1 of 150 to 350° C.;
wherein the second compound has an evaporation temperature T2 of 150 to 350° C.;
wherein absolute value of T1-T2 is less than 20° C.;
wherein the first compound has a concentration C1 in said mixture and a concentration C2 in a film formed by evaporating the mixture in a vacuum deposition tool at a constant pressure between 1×10 −6 Torr to 1×10 −9 Torr, at a 2 Å/sec deposition rate on a surface positioned at a predefined distance away from the mixture being evaporated; and
wherein absolute value of (C1−C2)/C1 is less than 5%.
20. The composition of claim 16 , wherein the first compound has a first mass loss rate and the second compound has a second mass loss rate, wherein the ratio between the first mass loss rate and the second mass loss rate is within the range of 0.90 to 1.10.