Multidentate dinuclear cyclometallated platinum complexes containing N-(pyrimidin-2-yl)-carbazole and its analogues

A compound of Formula I:

• wherein each of L1 and L2 is independently a six-membered carbocyclic, heterocyclic, heteroaryl ring;
• wherein each of Y1, Y2, Y3 independently comprises N and C;
• wherein V1, V2, V3, V4, V5, V6, V7 and V8 are coordinated with M1 or M2 and each independently comprises N and C;
• and at least two of V1, V2, V3 and V4 are N, at least two of V5, V6, V7 and V8 are N;
• wherein each of A1 and A2 is independently selected from the group consisting O, S, CH2, CD2, CRaRb, C═O, SiRaRb, GeH2, GeRaRb, NH, NRc, PH, PRc, RcP═O, AsRc, RcAs═O, S═O, SO2, Se, Se═O, SeO2, BH, BRc, RcBi═O, BiH, or BiRc;
• wherein each of X, X1 and X2 is independently selected from the group consisting N, B, CH, CD, CRa, SiH, SiD, SiRa, GeH, GeD, GeRd, P, P═O, As, As═O, Bi or Bi═O;
• wherein R1, R2, R3, R4, R5, R6, R7, R8 and R9 may represent mono-, di, tri, tetra-substitutions, or no substitution, and R1, R2, R3, R4, R5, R6, R7, R8, R9, Ra, Rb, Rc and Rd are independently selected from the group consisting hydrogen, deuterium, aryl, cycloalkyl, cycloalkenyl, heterocyclyl, heteroaryl, alkyl, alkenyl, alkynyl, halogen, hydroxyl, thiol, nitro, cyano, amino, a mono- or di-alkylamino, a mono- or diaryl amino, alkoxy, aryloxy, haloalkyl, aralkyl, ester, nitrile, isonitrile, heteroary, alkoxycarbonyl, acylamino, alkoxycarbonylamino, aryloxycarbonylamino, sulfonylamino, sulfamoyl, carbamoyl, alkylthio, sulfinyl, ureido, phosphoramide, amercapto, sulfo, carboxyl, hydrzino, substituted silyl, or any conjugate or combination thereof;
• Two or more adjacent R1, R2, R3, R4, R5, R6, R7, R8 and R9 are optionally joined to form a fused ring;
• wherein Ra, Rb, Rc and Rd may represent mono-, di, tri, tetra-substitutions, or no substitution, and Ra, Rb, Rc and Rd are independently selected from the group consisting hydrogen, deuterium, aryl, cycloalkyl, cycloalkenyl, heterocyclyl, heteroaryl, alkyl, alkenyl, alkynyl, halogen, hydroxyl, thiol, nitro, cyano, amino, a mono- or di-alkylamino, a mono- or diaryl amino, alkoxy, aryloxy, haloalkyl, aralkyl, ester, nitrile, isonitrile, heteroary, alkoxycarbonyl, acylamino, alkoxycarbonylamino, aryloxycarbonylamino, sulfonylamino, sulfamoyl, carbamoyl, alkylthio, sulfinyl, ureido, phosphorannide, annercapto, sulfo, carboxyl, hydrzino, substituted silyl, or any conjugate or combination thereof.