US 12,486,236 B2
Electroluminescent device
Le Wang, Beijing (CN); Qiang Wang, Beijing (CN); Junfei Wang, Beijing (CN); Han Zhang, Beijing (CN); Qi Zhang, Beijing (CN); Zhihong Dai, Beijing (CN); Cuifang Zhang, Beijing (CN); Nannan Lu, Beijing (CN); Chi Yuen Raymond Kwong, Beijing (CN); and Chuanjun Xia, Beijing (CN)
Assigned to BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD., Beijing (CN)
Filed by BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD., Beijing (CN)
Filed on Jun. 4, 2021, as Appl. No. 17/339,222.
Claims priority of application No. 202010505871.4 (CN), filed on Jun. 5, 2020; and application No. 202110464966.0 (CN), filed on Apr. 28, 2021.
Prior Publication US 2022/0402877 A1, Dec. 22, 2022
Int. Cl. C07D 223/32 (2006.01); C07F 15/00 (2006.01); H10K 50/11 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01)
CPC C07D 223/32 (2013.01) [C07F 15/0086 (2013.01); H10K 85/342 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 50/11 (2023.02)] 30 Claims
OG exemplary drawing
 
1. An electroluminescent device, comprising:
an anode,
a cathode, and
an organic layer disposed between the anode and the cathode, wherein the organic layer comprises at least a first compound and a second compound;
the first compound has a structure of H-L-E;
H has a structure represented by Formula 1-a:

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in Formula 1-a, A1, A2 and A3 are, at each occurrence identically or differently, selected from CR, and F1 to F10 are, at each occurrence identically or differently, selected from CRf; and
E has a structure represented by Formula 2-d:

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in Formula 2-d, Z2 and Z4 are each independently selected from CRz;
L is selected from substituted or unsubstituted arylene having 6 to 30 carbon atoms, substituted or unsubstituted heteroarylene having 3 to 30 carbon atoms or a combination thereof;
R, Rf and Rz are, at each occurrence identically or differently, selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, a substituted or unsubstituted heterocyclic group having 3 to 20 ring atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted aryl having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl having 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl having 6 to 20 carbon atoms, substituted or unsubstituted amino having 0 to 20 carbon atoms, a cyano group, a hydroxyl group, a sulfanyl group, and combinations thereof; and
adjacent substituents R, Rf can be optionally joined to form a ring;
the second compound is a metal complex having a general formula of Ir(La)2(Lb);
wherein,
La and Lb are a first ligand and a second ligand coordinated to the Ir, respectively; La and Lb can be optionally joined to form a multidentate ligand;
the multiple La may be the same or different;
the La has a structure represented by Formula 3-1 or Formula 3-3:

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wherein,
the ring E is selected from a benzene ring;
Re represents, at each occurrence identically or differently, mono-substitution, multiple substitutions or non-substitution;
X11 to X14 are, at each occurrence identically or differently, selected from CRx1; X31 to X34 are, at each occurrence identically or differently, selected from CRx3;
Y3 and Y4 are, at each occurrence identically or differently, selected from CRd;
Rx1, Rx3, Rd and Re are, at each occurrence identically or differently, selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted aryl having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl having 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl having 6 to 20 carbon atoms, substituted or unsubstituted amino having 0 to 20 carbon atoms, a cyano group, an isocyano group, a hydroxyl group, a sulfanyl group, and combinations thereof;
adjacent substituents Rx1, Rd and Re can be optionally joined to form a ring;
when Rx3 is selected from substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted aryl having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl having 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl having 6 to 20 carbon atoms, or substituted or unsubstituted amino having 0 to 20 carbon atoms, adjacent substituents Rx3 can be optionally joined to form a ring;
Lb is selected from the following structure:

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Ra, Rb and Rc represent, at each occurrence identically or differently, mono-substitution, multiple substitutions or non-substitution;
Xc and Xd are O;
Ra, Rb and Rc, are, at each occurrence identically or differently, selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, a cyano group, and combinations thereof;
in structures of Lb, adjacent substituents Ra, Rb, Rc, can be optionally joined to form a ring; and, the following case is not comprised: the first compound is

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 while the second compound is

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