NOVELTY - Polycyclic phenylpyridine metal complexes (I), are new. (I) comprises partial structure of metal complex (II).    USE - (I) or the formulation are useful in an electronic device, for producing singlet oxygen, in the photocatalysis or in oxygen sensors (claimed).    ADVANTAGE - (I): exhibits improved color purity of the emission, good solubility and high photoluminescence quantum-efficiency; and provides improved durability to the electronic device.    DETAILED DESCRIPTION - Polycyclic phenylpyridine metal complexes of formula (M(L)n (L1)m) (I), are new. (I) comprises partial structure of metal complex of formula (M(L)n) (II).    M(L)n = (IIa) or (IIb);    A = 4H,8H,12H-12c-aza-dibenzo(cd,mn)pyrene of formula (III);    M = Ir, Rh, Pt or Pd;    X = CR1 or N;    Q = R1C=CR1, R1C=N, O, S, Se or NR1;    V1 = O, S, Se or NR;    Y1 = single bond, C(R1)2, C(=O), O, S, NR1 or BR1; either    R1 = H, D, F, Cl, Br, I, N(R2)2, CN, NO2, Si(R2)3, B(OR2)2, C(=O)R2, P(=O)(R2)2, S(=O)R2, S(=O)2R2, OSO2R2, straight chain 2-40C alkyl, straight chain 2-40C alkoxy, straight chain 2-40C thio-alkoxy, straight chain 2-40C alkenyl, straight chain 2-40C alkynyl, branched or cyclic 3-40C alkyl, branched or cyclic 3-40C alkenyl, branched or cyclic 3-40C alkynyl, branched or cyclic 3-40C alkoxy, branched or cyclic 3-40C thioalkoxy (which is substituted with R2, where at least one non adjacent CH2 group is replaced R2C=CR2, C=C, Si(R2)2) Ge(R2)2, Sn(R2)2, CO, C=S, C=Se, C=NR2, P(=O)(R2), SO, SO2, NR2, O, S or CONR2 and at least one H is replaced by D, F, Cl, Br, I, CN or NO2), (hetero)aromatic ring system with 5-60 aromatic ring atoms (which is substituted with R2), (hetero)aryloxy with 5-60 aromatic ring atoms (which is substituted with R2), diarylamino, diheteroaryl-amino or arylheteroarylamino with 10-40 aromatic ring atoms (which is substituted with R2); or    2R1 = mono- or polycyclic, aliphatic aromatic and/or benzo-fused ring system; either    R2 = H, D, F, Cl, Br, I, N(R3)2, CN, NO2, Si(R3)3, B(OR3)2, C(=O)R3, P(=O)(R3)2, S(=O)R3, S(=O)2R3, OSO2R3, straight chain 1-40C alkyl, straight chain 1-40C alkoxy, straight chain 1-40C thioalkoxy, straight chain 2-40C alkenyl, straight chain 2-40C alkynyl, branched or cyclic 3-40C cyclic alkyl, branched or cyclic 3-40C alkenyl, branched or cyclic 3-40C alkynyl, branched or cyclic 3-40C alkoxy or branched or cyclic 3-40C thioalkoxy (which is substituted with R3, where at least one non adjacent CH2 is replaced by R3C=CR3, C=C, Si(R3)2, Ge(R3)2, Sn(R3)2, C=O, C=S, C=Se, C=NR3, P(=O)(R3), SO, SO2, NR3, O, S or CONR3, and at least one H is replaced by D, F, Cl, Br, I, CN or NO2), optionally (hetero)aromatic ring system with 5-60 aromatic ring atoms (which is substituted with at least one R3), (hetero)aryloxy with 5-60 aromatic ring atoms (which is substituted with at least one R3), diarylamino, diheteroarylamino or arylheteroarylamino with 10-40 aromatic ring atoms (which is substituted with at least one R3); or    2R2 = mono- or polycyclic, aliphatic, aromatic and/or benzo fused ring system; either    R3 = H, D, F or aliphatic, aromatic and/or heteroaromatic 1-20C hydrocarbon (in which at least one H is replaced by F); or    2R3 = mono- or polycyclic, aliphatic, aromatic and/or benzo fused ring system;    L1 = coligand, where at least two L are interconnected or L is connected with L1 over bridge Z and thus forms tridentate-, tetradentate-, pentadentate- or hexadentate-ligand system;    n = 1-3, where when n is 1-3, M is Ir or Rh, and when n is 1 or 2, M is Pt or Pd;    m = 0-4; either    a, b, c = 0 or 1; or    a+b+c = greater than or equal to 2.    INDEPENDENT CLAIMS are also included for:    (1) the preparation of (I);    (2) a formulation comprising (I) and at least one solvent; and    (3) an electronic device comprising (I), where the electronic device comprises organic electroluminescent devices, organic integrated circuits, organic field-effect transistors, organic thin film transistors, organic light emitting transistors, organic solar cells, organic optical detectors, organic photoreceptors, organic field-quench devices, light-emitting electrochemical cells or organic laser diodes.