Phosphorescent organic metal complex and use thereof

A metal complex, having a general formula of M(La)m(Lb)n(Lc)q, wherein

• M is, at each occurrence identically or differently, selected from the group consisting of Cu, Ag, Au, Ru, Rh, Pd, Os, Ir, and Pt;
• m is 1, 2, or 3, n is 0, 1, or 2, q is 0, 1, or 2, and m+n+q equals the oxidation state of the metal M;
• wherein when m is greater than or equal to 2, the multiple La are the same or different;
• when n is equal to 2, the two Lb are the same or different;
• when q is equal to 2, the two Lc are the same or different;
• La, Lb, and Lc are a first ligand, a second ligand, and a third ligand coordinated to the metal M, respectively;
• La, Lb, and Lc can be optionally joined to form a multidentate ligand;
• La has a structure represented by Formula 1:
• wherein,
• Z is selected from the group consisting of O, S, Se, NR, CRR, and SiRR, wherein when two R are present, the two R are the same or different;
• X1 to X8 are, at each occurrence identically or differently, selected from C, CRx, or N;
• Y1 to Y4 are, at each occurrence identically or differently, selected from CRy or N;
• at least one of X1 to X8 is selected from CRx, and the Rx is cyano;
• at least two of Y1 to Y4 are selected from CRy, and wherein at least one of the Ry is deuterium, and at least one of the Ry has a structure of -L-Rd;
• L is, at each occurrence identically or differently, selected from a single bond, substituted or unsubstituted alkylene having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkylene having 3 to 20 carbon atoms, substituted or unsubstituted arylene having 6 to 20 carbon atoms, substituted or unsubstituted heteroarylene having 3 to 20 carbon atoms, or combinations thereof;
• Rd is, at each occurrence identically or differently, selected from substituted alkyl having 1 to 20 carbon atoms, substituted cycloalkyl having 3 to 20 ring carbon atoms, substituted heteroalkyl having 1 to 20 carbon atoms, a substituted heterocyclic group having 3 to 20 ring atoms, substituted arylalkyl having 7 to 30 carbon atoms, substituted alkoxy having 1 to 20 carbon atoms, substituted aryloxy having 6 to 30 carbon atoms, substituted alkenyl having 2 to 20 carbon atoms, substituted aryl having 6 to 30 carbon atoms, substituted heteroaryl having 3 to 30 carbon atoms, substituted alkylsilyl having 3 to 20 carbon atoms, substituted arylsilyl having 6 to 20 carbon atoms, substituted amino having 0 to 20 carbon atoms, or combinations thereof;
• the substitution in the above-mentioned group of Rd contains at least one deuterium atom;
• R, Rx, and Ry 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 arylalkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 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, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a sulfanyl group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof, and
• adjacent substituents R, Rx, Ry, L, and Rd can be optionally joined to form a ring;
• and
• Lb and Lc are, at each occurrence identically or differently, selected from the group consisting of:
• wherein,
• Ra, Rb, and Rc are, at each occurrence identically or differently, represent mono-substitution, multi-substitution, or non-substitution;
• Xb is, at each occurrence identically or differently, selected from the group consisting of:
• O, S, Se, NRN1, and CRC1RC2;
• Xc and Xd are, at each occurrence identically or differently, selected from the group consisting of:
• O, S, Se, and NRN2;
• Ra, Rb, Rc, RN1, RN2, RC1, and RC2 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 arylalkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 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, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a sulfanyl group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof;
• and
• in structures of Lb and Lc, adjacent substituents Ra, Rb, Rc, RN1, RN2, RC1, and RC2 can be optionally joined to form a ring.