NOVELTY - Substituted dibenzonaphtacene derivative (I), is new.    USE - (I), the formulation or the composition is useful in an an electronic device comprising 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. (I), the formulation, the composition or the device is useful for therapy, prophylaxis and/or diagnosis of diseases and/or cosmetic conditions (all claimed).    ADVANTAGE - (I) exhibits improved solubility and high thermal stability and provides durability, improved efficiency and steep current-voltage curves with low threshold voltages to the electronic devices.    DETAILED DESCRIPTION - Substituted dibenzonaphtacene derivative of formula (I), is new.    T, U1, V1, W1 = CR1, N, P or PR1, where at least three of eight groups T and U1 comprises R1 comprising at latest one optionally (hetero)aromatic with 5-60 ring atoms;    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 1-40C alkyl, 1-40C alkoxy, 1-40C thioalkoxy, straight chain 2-40C alkenyl, 2-40C alkynyl, branched or cyclic 3-40C alkyl, 3-40C alkenyl, 3-40C alkynyl, 3-40C alkoxy, 3-40C alkylalkoxy, 3-40C thioalkoxy, which are respectively substituted by at least one R2 (where at least one non-adjacent CH2 is replaced by R2C=CR2, CC, Si(R2)2, Ge(R2)2, Sn(R2)2, C=O, 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), optionally (hetero)aromatic ring system with 5-60 aromatic ring atoms, which are respectively substituted by at least one R2, aryloxy, optionally (hetero)aryloxy with 5-60 aromatic ring atoms, which are respectively substituted by at least one R2, optionally di(hetero)arylamino with 10-40 aromatic ring atoms, arylheteroarylamino with 10-40 aromatic ring atoms, which are respectively substituted by at least one R2, combination of at least two of groups or crosslinkable group Q;    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, 1-40C alkoxy, 1-40C thioalkoxy, straight chain 2-40C alkenyl, 2-40C alkynyl, branched or cyclic 3-40C alkyl, 3-40C alkenyl, 3-40C alkynyl, 3-40C alkoxy, 3-40C alkylalkoxy or 3-40C thioalkoxy, which are respectively substituted with at least one R3 (where at least one non-adjacent CH2 is replaced by R3C=CR3, CC, 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 heteroaromatic ring system with 5 bis 60 aromatic ring atoms, which are respectively substituted with at least one R3, aryloxy, optionally heteroaryloxy with 5-60 aromatic ring atoms, which are respectively substituted with at least one R3, optionally di(hetero)arylamino with 10-40 aromatic ring atoms, arylheteroarylamino with 10-40 aromatic ring atoms, which are respectively substituted with at least one R3, combination of at least two groups;    2R2 = mono- or polycyclic, aliphatic or aromatic ring system;    R3 = H, D, F, aliphatic, optionally (hetero)aromatic 1-40C hydrocarbon, where at least one H is replaced by F; and    2R3 = mono- or polycyclic, aliphatic or aromatic ring system.    INDEPENDENT CLAIMS are also included for:    (1) a formulation comprising at least one (I) and at least one solvent;    (2) a composition comprising (I) and at least a further organic functional material comprising emitter, host materials, matrix materials, electron transport material, electron injection material, hole transport materials, hole injection material, electron-blocking materials, hole blocking materials or exciton blocking material, preferably emitter or phosphorescent emitters;    (3) an electronic device comprising (I) or the composition, 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; and    (4) the organic electroluminescent device comprising (I), which is used as a host or matrix material in at least one emitting layer, preferably in combination with the emitter, where the emitter comprises fluorescent or phosphorescent emitter.