| 主权项 |
1. A composition comprising one or more compounds of the formulas:wherein, for each of the one or more compounds:
(L1̂L2) represents an emitting portion of the compound, (L3̂L4) represents an ancillary portion of the compound, L1, L2 and L3 each independently represents a substituted or unsubstituted aromatic ring, heterocyclic group, carbene group, or N-heterocyclic carbene, L4 represents a substituted or unsubstituted aromatic ring, heterocyclic group, carbene group, N-heterocyclic carbene, chlorine (Cl), fluorine (F), nitrile, substituted alkyl, substituted alkenyl, or C3-C6 alkynyl, L1 and L2 are linked directly, L2 and L3 are linked directly or through a linking atom A1, wherein A1 represents oxygen (O), sulfur (S), nitrogen (N), carbon (C), phosphorous (P), silicon (Si), or boron (B), L3 and L4 are unlinked, linked directly, or, when L4 represents a substituted or unsubstituted aromatic ring, heterocyclic group, carbene group, or N-heterocyclic carbene, linked through a linking atom A2, wherein A2 represents oxygen (O), sulfur (S), nitrogen (N), carbon (C), phosphorous (P), silicon (Si), or boron (B), V1, V2, V3 and V4 represent coordinated atoms of L1, L2, L3 or L4, respectively, wherein V1, V2, V3 and V4 each independently represents nitrogen (N), carbon (C), phosphorous (P), boron (B), or silicon (Si), M represents platinum (Pt), gold (Au), iridium (Ir), rhodium (Rh), ruthenium (Ru), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), silver (Ag), mercury (Hg), cadmium (Cd), or zirconium (Zr), and Ra, Rb, Rc and Rd each independently represents mono-, di-, tri, or tetra-substitution, and each independently represents one or more of deuterium, a halogen atom, a hydroxyl group, a thiol group, a nitro group, a cyano group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted haloalkyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted amino group, a substituted or unsubstituted mono- or dialkylamino group, a substituted or unsubstituted mono- or diarylamino group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted heteroaryl group, an alkoxycarbonyl group, an acyloxy group, an acylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfonylamino group, a sulfamoyl group, a carbamoyl group, an alkylthio group, a sulfinyl group, a ureido group, a phosphoramide group, a mercapto group, a sulfo group, a carboxyl group, a hydrazino group, a substituted silyl group, a polymeric group, or a combination thereof. |
