NOVELTY - Substituted fluorene compounds (I) are new.    USE - (I) are useful: in an electronic device including organic integrated circuits, organic FETs, 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 such as organic light emitting diode; and as a hole transport material in a hole transport or hole injection layer, matrix material in an emitting layer, an electron blocking material, and an exciton-blocking material (all claimed).    ADVANTAGE - (I) provide improved performance, thermal stability, efficiency and service life to the electronic device.    DETAILED DESCRIPTION - Substituted fluorene compounds of formula (I) are new.    R1 = H, D, F, Cl, Br, I, C(=O)R4, CN, Si(R4)3, NO2, P(=O)(R4)2, S(=O)R4, S(= O)2R4, linear 1-20C-alkyl, -alkoxy, -thioalkyl, branched or cyclic 3-20C-alkyl, -alkoxy, -thioalkyl, 2-20C-alkenyl, -alkynyl, aryl or heteroaryl ring system having 6-30 aryl ring atoms, which are optionally substituted by one or more radicals R4, or aryloxy or aralkyl having 5-60 aryl ring atoms, which are substituted with one or more radicals R4, where the abovementioned groups are substituted with one or more radicals R4, one or more CH2-groups in the abovementioned groups are replaced by -R4C=CR4, -CC-, Si(R4)2, C=O, C=S, C=NR4, -C(=O)O-, -C(=O)NR4, P(=O)(R4), -O-, -S-, SO or SO2, one or more H-atoms in the abovementioned groups are replaced by D, F, Cl, Br, I, CN or NO2, the two radicals R1 are linked together and form a ring so that a spiro compound arises in position 9 of (I), and spirobifluorenes are excluded;    R2, R3 = H, D, F, Cl, Br, I, C(=O)R4, CN, Si(R4)3, NO2, P(=O)(R4)2, S(=O)R4, S(=O)2R4, linear 1-20C-alkyl, -alkoxy, -thioalkyl, branched or cyclic 3-20C-alkyl, -alkoxy, -thioalkyl, 2-20C-alkenyl, -alkynyl, aryl or heteroaryl ring system having 6-30 aryl ring atoms, which are optionally substituted by one or more radicals R4, or aryloxy or aralkyl having 5-60 aryl ring atoms, which are substituted with one or more radicals R4, where the abovementioned groups are optionally substituted with one or more radicals R4, one or more CH2-groups in the abovementioned groups are replaced by -R4C=CR4, -CC-, Si(R4)2, C=O, C=S, C=NR4, -C(=O)O-, -C(=O)NR4, P(=O)(R4), -O-, -S-, SO or SO2, one or more H-atoms in the abovementioned groups are replaced by D, F, Cl, Br, I, CN or NO2, the two or more radicals R2 or R3 are linked together and form a ring;    R5 = H, D, F, aliphatic 1-20C hydrocarbyl, aryl or heteroaryl ring system having 5-30C, in which one or more H atoms are replaced by D or F, where two or more adjacent substituents R5 together form a mono-or polycyclic, aliphatic, ring system;    Za, Zb, Zc = R3 or a monovalent group of formula (-B1a-N-(Ar1)-(Ar2)) (II);    B1a = a single bond, aryl having 6-30 ring atoms, or mono-or bicyclic heteroaryl having 5-30 ring atoms, which are optionally substituted with one or more radicals R4, where, when B1a is a single bond, the nitrogen atom is directly bound to (I);    Ar1, Ar2 = aryl or heteroaryl having 10-60 aromatic ring atoms, which are substituted with one or more radicals R6 that are same or different from each other, where both groups Ar1 or Ar2 contain at least two or more aryl or heteroaryl rings, two of the aryl or heteroaryl rings in Ar1 or Ar2 are condensed, two of the aryl or heteroaryl rings in Ar1 and Ar2 are bridged by a divalent group comprising -O-, -Si(R6)2- (both preferred), or -S-, the aryl or heteroaryl ring of Ar1 with the aryl or heteroaryl ring of Ar2 is bridged by the divalent group comprising -O-, -S-, -Si(R6)2-, -NR6 or -C(R6)2-, and unbridged groups of Ar1 and Ar2 are preferred;    R4, R6 = H, D, F, Cl, Br, I, C(=O)R5, CN, Si(R5)3, NO2, P(=O)(R5)2, S(=O)R5, S(= O)2R5, N(R5)2, linear 1-20C-alkyl, -alkoxy, -thioalkyl, branched or cyclic 3-20C-alkyl, -alkoxy, -thioalkyl, 2-20C-alkenyl, -alkynyl, aryl or heteroaryl ring system having 5-30 aryl ring atoms, which are optionally substituted by one or more radicals R5, or aryloxy or heteroaryloxy having 5-30 aryl ring atoms, which are substituted with one or more radicals R5, where the above groups are optionally substituted with one or more radicals R5, one or more CH2-groups in the above groups are replaced by -R5C=CR5, -CC-, Si(R5)2, C=O, C=S, C=NR5, -C(=O)O-, -C(=O)NR5, P(=O)(R5), -O-, -S-, SO or SO2, and one or more H-atoms in the abovementioned groups are replaced by D, F, Cl, Br, I, CN or NO2, provided that Za, Zb and Zc in (I) does not contain fluorene or carbazole groups and (I) does not contain condensed aryl or heteroaryl ring systems having more than 10 ring atoms, when (I) does not contain aryl or heteroaryl ring systems; and    p, q, r = 0-1, where the sum of the p, q and r is 1, and p is preferably 1.    INDEPENDENT CLAIMS are included for:    (1) the preparation of (I);    (2) a composition comprising (I), polymers, oligomers or dendrimers, and at least another organic functional material consisting of fluorescent emitter, phosphorescent emitter, host materials, matrix materials, electron-transporting materials, electron injection materials, hole conductor materials, hole injection materials, electron-blocking materials and hole-blocking materials; and    (3) a formulation comprising (I) or polymer, oligomer or dendrimer, and at least one solvent.