NOVELTY - Spirobifluorene complex (I) is new, where (I) excludes N,N'-Diphenyl-N,N'-bis-(5,6,7,8-tetrahydro-naphthalen-1-yl)-tetraphenylene-2,7-diamine.    USE - (I) is useful in 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, organic laser diodes and organic electroluminescent devices; as a hole transport material, a matrix material as a emitter material, as electron-blocking material, a hole injection material and/or a hole blocking material in an organic electroluminescent device (all claimed).    ADVANTAGE - (I) has comparable charge carrier mobility and a high tendency to form amorphous films and a good solubility in organic solvents. (I) has a high glass transition temperature, which is preferably above 100 degrees C, a high glass transition temperature typically correlate with good film forming properties, which are highly desirable for materials for use in organic light emitting diodes. (I) readily sublimes and show no or only slight decomposition during sublimation.    DETAILED DESCRIPTION - Spirobifluorene complex of formula (I) is new, where (I) excludes N,N'-diphenyl-N,N'-bis-(5,6,7,8-tetrahydro-naphthalen-1-yl)-tetraphenylene-2,7-diamine.    X = CH, CR1 or C;    Y1 = single bond, O, S, C(R4)2 or NR4; either    R = H, D, CHO, C(=O)R3, P(=O)(R3)2, S(=O)R3, S(=O)2R3, CN, NO2, Si(R3)3, B(OR3)2, OSO2R3, OH, COOR3, CON(R3)2, 1-40C linear alkyl or 3-40C branched or cyclic alkyl or 2-40C alkenyl or alkynyl, where in the alkyl, alkenyl and alkynyl, at least one CH2 group can be replaced by Si(R3)2, C=O, C=S, Se=C, C=NR3, P(=O)(R3), SO, SO2, NR3, -O-, -S-, -COO- or -CONR3, and alkyl, alkenyl and alkynyl are substituted with at least R3, or an aromatic or heteroaromatic ring system having 5-60 aromatic ring atoms, which are respectively substituted by at least one non-aromatic R3, and/or an aryloxy or heteroaryloxy group having 5-60 aromatic ring atoms, which are respectively substituted by at least one non-aromatic R3; or    two joines R's = an aliphatic or aromatic ring system; either    R1 = 1-40C linear alkyl or 3-40C branched or cyclic alkyl or 2-40C alkenyl or alkynyl, where in the alkyl, alkenyl or alkynyl, at least one CH2 group can be replaced by Si(R3)2, C=O, C=S, Se=C, C=NR3, P(=O)(R3)SO, SO2, NR3, -O-, -S-, -COO- or -CONR3 and alkyl, alkenyl or alkynyl can be substituted with at least one R3; or    two or more R1 together = ring system;    R2 = H, D, F, Cl, Br, I, CHO, N(Ar1)2, N(R3)2, C(=O)R3, P(=O)(R3)2 , S(=O) R3, S(=O)2R3, CR3=C(R3)2, CN, NO2, Si(R3)3, B(OR3)2, OSO2R3, OH, COOR3, CON(R3)2 , 1-40C straight chain alkyl, alkoxy or thioalkyl or 3-40C branched or cyclic alkyl, or 2-40C of alkenyl or alkynyl substituted with at least one R3 (where at least one adjacent CH2 groups are replaced by Si(R3)2, C=O, C=S, Se=C, C=NR3, P(=O)(R3), SO, SO2, NR3, -O-, -S-, -COO- or -CONR3) and at least one H can be replaced by D, F, Cl, Br, I, CN or NO2, or aromatic or heteroaromatic ring system or aryloxy or heteroaryloxy group, which has 5-60 aromatic ring atoms and is substituted by at least one non-aromatic R3; either    R3 = H, D, F, Cl, Br, I, CHO, N(R4)2, C(=O)R4, P(=O)(R4)2, S(=O)R4, S(=O)2R4, CR4=C(R4)2, ON, NO2, Si(R4)3, B(OR4)2, OSO2R4, OH, COOR 4, CON(R4)2, 1-40C straight chain alkyl, alkoxy or thioalkyl or 3-40C branched or cyclic alkyl, alkoxy or thioalkyl group or 2-40C alkenyl or alkynyl, which is substituted with at least one R4, where at least one nonadjacent CH2 groups can be replaced by Si(R4)2, C=O, C=S, Se=C, C=NR4, P(=O)(R4), SO, SO2, NR4, -O-, -S-, -COO- or -CONR4 and at least one H can be replaced by D, F, Cl, Br, I, NO2 or ON, or an aromatic or hetero aromatic ring system and/or an aryloxy or heteroaryloxy group, which has 5-60 aromatic ring atoms and is substituted by at least one non-aromatic R4; or    two or more R3 together = aliphatic or aromatic ring system; either    R4 = H, D, F or aliphatic, aromatic and/or heterocyclic aromatic organic radical having 1-20C, in which at least one H can be replaced by D or F; or    two or more R4 together = aliphatic or aromatic ring system;    Ar1 = aryl or heteroaryl group with 5-60 aromatic carbon atoms, which is substituted with at least one R3; and    n = 0 or 1.    Provided that: at least one X is CR1; exactly one X is CR1at each of the both aryl amino groups, where the CR1 is not in meta-position to bind with nitrogen atom; X is C, when Y1 is bonded to X; when n is 0, then the group Y1 is absent. INDEPENDENT CLAIMS are also included for:    (1) a mixture comprising (I) and at least one phosphorescent dopant and/or other matrix materials;    (2) a formulation comprising (I) and at least one solvent;    (3) preparing (I);    (4) electronic device comprising (I), the mixture or the formulation; and    (5) an organic electroluminescent device, where (I) is used as a hole transport material in a hole transport layer or hole injection layer and/or as a matrix material in an emitting layer.