Organic electroluminescent materials and devices
A composition of materials including a first compound having a structure according to Formula I
1. A composition of materials comprising a first compound, wherein the first compound has a formula:
wherein G 1 is selected from the group consisting of dibenzofuran, dibenzothiophene, dibenzoselenophene, and fluorene;
wherein L 1 , L 2 and L 3 are each independently selected from the group consisting of direct bond, phenyl, biphenyl, terphenyl, pyridine, pyrimidine, and combinations thereof;
wherein G 4 is selected from the group consisting of phenyl, biphenyl, terphenyl, naphthalene, phenanthrene, pyridine, pyrimidine, pyrazine, quinoline, isoquinoline, phenanthroline, and combinations thereof;
wherein G 2 , G 3 , and G 5 are each independently selected from the group consisting of phenyl, biphenyl, terphenyl, fluorene, naphthalene, phenanthrene, pyridine, pyrimidine, pyrazine, quinoline, isoquinoline, phenanthroline, aza-fluorene, and combinations thereof;
wherein G 2 , G 3 , G 4 , and G 5 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, phenyl, biphenyl, terphenyl, pyridine, and combinations thereof;
wherein m is an integer from 0 to 7,
wherein n is an integer from 0 to 4;
wherein, when m or n is larger than 1, each G 4 or G 5 can be same or different;
wherein, when n is 0, m is equal to or greater than 1 and each G 4 is selected from the group consisting of phenyl and biphenyl;
wherein when n is equal to or greater than 1, L 1 is not a direct bond;
wherein m+n is at least 1;
if L 1 is phenyl, then at least one of the following is true: (i) n is 0, (ii) n is 1 and G 5 is not biphenyl, or (iii) m+n is at least 2, and
wherein at least one of the following is true:
(a) m is at least 2;
(b) at least one G 4 is not phenyl; or
(c) at least one of L 1 , L 2 , L 3 , G 2 , G 3 , or G 4 comprises a heteroatom.
2. The composition of claim 1 , wherein n is 0.
3. The composition of claim 1 , wherein the compound is
4. The composition of claim 1 , wherein m is at least 1 and G 4 has the structure selected from the group consisting of:
5. The composition of claim 1 , wherein G 1 has the structure selected from the group consisting of:
wherein X is selected from a group consisting of O, S and Se;
wherein R B1 and R B2 are independently selected from a group consisting of hydrogen, deuterium, alkyl, cycloalkyl, alkoxyl, aryl, heteroaryl, halogen, and combinations thereof; and
wherein R B1 and R B2 are optionally joined to form a ring.
6. The composition of claim 1 , wherein L 1 is selected from the group consisting of:
7. The composition of claim 1 , wherein G 2 , G 3 and G 5 are independently selected from the group consisting of:
wherein R B1 and R B2 are independently selected from a group consisting of hydrogen, deuterium, alkyl, cycloalkyl, alkoxyl, aryl, heteroaryl, halogen, and combinations thereof; and
wherein R B1 and R B2 are optionally joined to form a ring.
8. The composition of claim 1 , wherein at least one of G 2 , G 3 , G 4 and G 5 is substituted with at least one fluorine atom.
9. The composition of claim 1 , wherein, when n is 0 and m is 1, G 4 -G 1 has a structure selected from the group consisting of:
10. The composition of claim 1 , wherein L 1 is biphenyl.
11. A composition comprising a first compound selected from the group consisting of:
12. The composition of claim 1 , wherein the composition comprises a second compound;
wherein the second compound has the formula II:
wherein Ar 1 is selected from the group consisting of triphenylene, and aza-triphenylene;
wherein Ar 2 is selected from the group consisting of a direct bond, phenyl, biphenyl, terphenyl, naphthalene, pyridine, dibenzofuran, dibenzothiophene, dibenzoselenophene, aza-dibenzofuran, aza-dibenzothiophene, aza-dibenzoselenophene, and combinations thereof;
wherein Ar 3 is selected from the group consisting of benzene, biphenyl, terphenyl, naphthalene, pyridine, dibenzofuran, dibenzothiophene, dibenzoselenophene, aza-dibenzofuran, aza-dibenzothiophene, aza-dibenzoselenophene, carbazole, aza-carbazole, and combinations thereof; and
wherein Ar 1 , Ar 2 and Ar 3 are each, independently, optionally further substituted with one or more substitutions selected from the group consisting of deuterium, halogen, alkyl, aryl, heteroaryl, and combinations thereof.
13. The composition of claim 12 , wherein the second compound is selected from the group consisting of
wherein X is selected from the group consisting of O, S and Se;
wherein R 1 and R 4 each independently represents mono, di, or tri, substitution, or no substitution;
wherein R 2 , R 3 , R 5 , and R 6 each independently represents mono, di, tri, or tetra substitution, or no substitution; and
wherein R 1 to R 6 are each independently selected from the group consisting of hydrogen, deuterium, benzene, biphenyl, terphenyl, naphthalene, fluorene, triphenylene, phenanthrene, dibenzofuran, dibenzothiophene, carbazole and combinations thereof.
14. The composition of claim 12 , wherein the second compound is selected from the group consisting of
Compound E1 through E3, each represented
by the formula
wherein in Compound E1: X = O,
in Compound E2: X = S,
in Compound E3: X = Se
Compound E4 through E6, each represented
by the formula
wherein in Compound E4: X = O,
in Compound E5: X = S,
in Compound E6: X = Se
Compound E7 through E9, each represented
by the formula
wherein in Compound E7: X = O,
in Compound E8: X = S,
in Compound E9: X = Se
Compound E10 through E12, each represented
by the formula
wherein in Compound E10: X = O,
in Compound E11: X = S,
in Compound E12: X = Se
Compound E13 through E15, each represented
by the formula
wherein in Compound E13: X = O,
in Compound E14: X = S,
in Compound E15: X = Se
Compound E16 through E18, each represented
by the formula
wherein in Compound E16: X = O,
in Compound E17: X = S,
in Compound E18: X = Se
Compound E19 through E21, each represented
by the formula
wherein in Compound E19: X = O,
in Compound E20: X = S,
in Compound E21: X = Se
Compound E22 through E24, each represented
by the formula
wherein in Compound E22: X = O,
in Compound E23: X = S,
in Compound E24: X = Se
Compound E25 through E27, each represented
by the formula
wherein in Compound E25: X = O,
in Compound E26: X = S,
in Compound E27: X = Se
Compound E28
Compound E29
Compound E30
15. A composition comprising a mixture of a first compound and a second compound is selected from the group consisting of:
16. The composition of claim 1 , wherein the composition comprises a second compound; wherein the second compound is a phosphorescent emissive Ir complex having at least one substituent selected from the group consisting of alkyl, cycloalkyl, partially or fully deuterated variants thereof, partially or fully fluorinated variants thereof, and combinations thereof.
17. The composition of claim 1 , wherein the first compound is selected from the group consisting of:
Compound C64 through C66, each represented
by the formula
wherein in Compound C64: X = O,
in Compound C65: X = S,
in Compound C66: X = Se,
Compound C67 through C69, each represented
by the formula
wherein in Compound C67: X = O,
in Compound C68: X = S,
in Compound C69: X = Se,
Compound C70 through C72, each represented
by the formula
wherein in Compound C70: X = O,
in Compound C71: X = S,
in Compound C72: X = Se,
Compound C73 through C75, each represented
by the formula
wherein in Compound C73: X = O,
in Compound C74: X = S,
in Compound C75: X = Se,
Compound C76 through C78, each represented
by the formula
wherein in Compound C76: X = O,
in Compound C77: X = S,
in Compound C78: X = Se,
Compound C79 through C81, each represented
by the formula
wherein in Compound C79: X = O,
in Compound C80: X = S,
in Compound C81: X = Se,
Compound C82 through C84, each represented
by the formula
wherein in Compound C82: X = O,
in Compound C83: X = S,
in Compound C84: X = Se,
Compound C85 through C87, each represented
by the formula
wherein in Compound C85: X = O,
in Compound C86: X = S,
in Compound C87: X = Se,
Compound C88 through C90, each represented
by the formula
wherein in Compound C88: X = O,
in Compound C89: X = S,
in Compound C90: X = Se,
Compound C91 through C93, each represented
by the formula
wherein in Compound C91: X = O,
in Compound C92: X = S,
in Compound C93: X = Se,
Compound C94 through C96, each represented
by the formula
wherein in Compound C94: X = O,
in Compound C95: X = S,
in Compound C96: X = Se,
Compound C97 through C99, each represented
by the formula
wherein in Compound C97: X = O,
in Compound C98: X = S,
in Compound C99: X = Se,
Compound C100 through C102, each represented
by the formula
wherein in Compound C100: X = O,
in Compound C101: X = S,
in Compound C102: X = Se,
Compound C103 through C105, each represented
by the formula
wherein in Compound C103: X = O,
in Compound C104: X = S,
in Compound C105: X = Se,
Compound C106 through C108, each represented
by the formula
wherein in Compound C106: X = O,
in Compound C107: X = S,
in Compound C108: X = Se,
Compound C109 through C111, each represented
by the formula
wherein in Compound C109: X = O,
in Compound C110: X = S,
in Compound C111: X = Se,
Compound C112 through C114, each represented
by the formula
wherein in Compound C112: X = O,
in Compound C113: X = S,
in Compound C114: X = Se,
Compound C115 through C117, each represented
by the formula
wherein in Compound C115: X = O,
in Compound C116: X = S,
in Compound C117: X = Se,
Compound C133 through C135, each represented
by the formula
wherein in Compound C133: X = O,
in Compound C134: X = S,
in Compound C135: X = Se,
Compound C136 through C138, each represented
by the formula
wherein in Compound C136: X = O,
in Compound C137: X = S,
in Compound C138: X = Se,
Compound C139 through C141, each represented
by the formula
wherein in Compound C139: X = O,
in Compound C140: X = S,
in Compound C141: X = Se,
Compound C142 through C144, each represented
by the formula
wherein in Compound C142: X = O,
in Compound C143: X = S,
in Compound C144: X = Se,
Compound C151 through C153, each represented
by the formula
wherein in Compound C151: X = O,
in Compound C152: X = S,
in Compound C152: X = Se,
Compound C154 through C156, each represented
by the formula
wherein in Compound C154: X = O,
in Compound C155: X = S,
in Compound C156: X = Se,
Compound C169 through C171, each represented
by the formula
wherein in Compound C169: X = O,
in Compound C170: X = S,
in Compound C171: X = Se,
Compound C172 through C174, each represented
by the formula
wherein in Compound C172: X = O,
in Compound C173: X = S,
in Compound C174: X = Se,
Compound C178 through C180, each represented
by the formula
wherein in Compound C178: X = O,
in Compound C179: X = S,
in Compound C180: X = Se,
Compound C181 through C183, each represented
by the formula
wherein in Compound C181: X = O,
in Compound C182: X = S,
in Compound C183: X = Se,
Compound C184 through C186, each represented
by the formula
wherein in Compound C184: X = O,
in Compound C185: X = S,
in Compound C186: X = Se,
Compound C187 through C189, each represented
by the formula
wherein in Compound C187: X = O,
in Compound C188: X = S,
in Compound C189: X = Se,
Compound C199 through C201, each represented
by the formula
wherein in Compound C199: X = O,
in Compound C200: X = S,
in Compound C201: X = Se,
Compound C202 through C204, each represented
by the formula
wherein in Compound C202: X = O,
in Compound C203: X = S,
in Compound C204: X = Se,
Compound C217 through C219, each represented
by the formula
wherein in Compound C217: X = O,
in Compound C218: X = S,
in Compound C219: X = Se,
Compound C238 through C240, each represented
by the formula
wherein in Compound C238: X = O,
in Compound C239: X = S,
in Compound C240: X = Se,
Compound C244 through C246, each represented
by the formula
wherein in Compound C244: X = O,
in Compound C245: X = S,
in Compound C246: X = Se,
Compound C247 through C249, each represented
by the formula
wherein in Compound C247: X = O,
in Compound C248: X = S,
in Compound C249: X = Se,
Compound C250 through C252, each represented
by the formula
wherein in Compound C250: X = O,
in Compound C251: X = S,
in Compound C252: X = Se,
and
Compound C253 through C255, each represented
by the formula
wherein in Compound C253: X = O,
in Compound C254: X = S,
in Compound C255: X = Se.