Organic electroluminescent materials and devices
A compound that has the structure according to Formula M(L A ) x (L B ) y (L C ) z : wherein ligand L A is ligand L B is and ligand L C is and devices and formulations containing these compounds are disclosed. In Formula M(L A ) x (L B ) y (L C ) z : M is a metal having an atomic number greater than 40; x is 1 or 2; x+y+z is the oxidation state of the metal M; X 1 -X 4 and A 1 -A 8 are C or N; at least one of A 1 -A 8 is N; X is O, S, or Se; two adjacent R B form a six-member aromatic ring E fused to ring B; wherein ring E can be substituted by R E ; each R A -R E and R 1 -R 4 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.
1. A compound having a formula M(L A ) n (L B ) 3-n selected from the group consisting of:
wherein n is 1 or 2;
wherein X 2 , X 3 , X 4 are independently CH or N;
wherein X 5 , X 6 , X 7 , and X 8 are C or N;
wherein R F , R I , and R J each independently represent mono, di, tri, or tetra-substitution, or no substitution;
wherein R is selected from the group consisting of alkyl, partially or fully deuterated alkyl, cycloalkyl, partially or fully deuterated cycloalkyl, and combinations thereof;
wherein R 5 , R 6 , R 7 , and R 8 are independently selected from group consisting of alkyl, cycloalkyl, aryl, and heteroaryl;
wherein at least one of R 5 , R 6 , R 7 , and R 8 has at least two C atoms;
wherein each of R A , R F , R I , R J , R 1 , R 2 , and R 3 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.
2. The compound of claim 1 , wherein X 2 , X 3 , and X 4 are CH; and wherein X 5 , X 6 , X 7 , and X 8 are C.
3. The compound of claim 1 , wherein (a) at least one of X 2 , X 3 , and X 4 is N in the compound, (b) wherein at least one of X 5 , X 6 , X 7 , and X 8 is N, or (c) both.
4. The compound of claim 1 , wherein L B is selected from the group consisting of:
5. The compound of claim 1 , wherein L A is selected from the group consisting of:
and
6. The compound of claim 1 , wherein at least one R F , R I , or R J present in the compound is selected from the group consisting of alkyl, cycloalkyl, heteroalkyl, arylalkyl, partially and fully deuterated variants thereof, and combinations thereof.
7. The compound of claim 1 , selected from the group consisting of
8. The compound of claim 1 , wherein the compound is selected from the group consisting of:
9. The compound of claim 1 , wherein the compound is selected from the group consisting of:
10. 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 M(L A ) n (L B ) 3-n selected from the group consisting of:
wherein n is 1 or 2;
wherein X 2 , X 3 , X 4 are independently CH or N;
wherein X 5 , X 6 , X 7 , and X 8 are C or N;
wherein R F , R I , and R J each independently represent mono, di, tri, or tetra-substitution, or no substitution;
wherein R is selected from the group consisting of alkyl, partially or fully deuterated alkyl, cycloalkyl, partially or fully deuterated cycloalkyl, and combinations thereof;
wherein R 5 , R 6 , R 7 , and R 8 are independently selected from group consisting of alkyl, cycloalkyl, aryl, and heteroaryl;
wherein at least one of R 5 , R 6 , R 7 , and R 8 has at least two C atoms;
wherein each of R A , R F , R I , R J , R 1 , R 2 , and R 3 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.
11. The first device of claim 10 , wherein the first device is selected from a consumer product, an organic light emitting device, and a light panel.
12. The first device of claim 10 , wherein the organic layer is an emissive layer and the compound is an emissive dopant.
13. The first device of claim 10 , wherein the organic layer is an emissive layer and the compound is a non-emissive dopant.
14. The first device of claim 10 , wherein the organic layer further comprises a host material.
15. The first device of claim 14 , wherein the host material comprises a triphenylene containing benzo-fused thiophene or benzo-fused furan;
wherein any substituent in the host material is an unfused substituent independently selected from the group consisting of C n H 2n+1 , OC n H 2n+1 , OAr 1 , N(C n H 2n+1 ) 2 , N(Ar 1 )(Ar 2 ), CH═CH—C n H 2n+1 , C≡C—C n H 2n+1 , Ar 1 , Ar 1 —Ar 2 , C n H 2n —Ar 1 ;
wherein n is from 1 to 10; and
wherein Ar 1 and Ar 2 are independently selected from the group consisting of benzene, biphenyl, naphthalene, triphenylene, carbazole, and heteroaromatic analogs thereof.
16. The first device of claim 14 , wherein the host material comprises at least one chemical group selected from the group consisting of carbazole, dibenzothiophene, dibenzofuran, dibenzoselenophene, azacarbazole, aza-dibenzothiophene, aza-dibenzofuran, and aza-dibenzoselenophene.
17. The first device of claim 14 , wherein the host material is selected from the group consisting of:
and combinations thereof.
18. The first device of claim 14 , wherein the host material comprises a metal complex.
19. A formulation comprising a compound M(L A ) n (L B ) 3-n selected from the group consisting of:
wherein n is 1 or 2;
wherein X 2 , X 3 , X 4 are independently CH or N;
wherein X 5 , X 6 , X 7 , and X 8 are C or N;
wherein R F , R I , and R J each independently represent mono, di, tri, or tetra-substitution, or no substitution;
wherein R is selected from the group consisting of alkyl, partially or fully deuterated alkyl, cycloalkyl, partially or fully deuterated cycloalkyl, and combinations thereof;
wherein R 5 , R 6 , R 7 , and R 8 are independently selected from group consisting of alkyl, cycloalkyl, aryl, and heteroaryl;
wherein at least one of R 5 , R 6 , R 7 , and R 8 has at least two C atoms;
wherein each of R A , R F , R I , R J , R 1 , R 2 , and R 3 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.