NOVELTY - Substituted fluorene compounds (I) are new.    USE - (I) are useful in electronic device: including organic electroluminescence device (including organic light emitting diodes (preferred), organic light-emitting transistors, organic field-quench devices, organic light-emitting electrochemical cells, preferably organic light-emitting electrochemical cells and light-emitting electrochemical cell, organic laser diodes, organic integrated circuits, organic field-effect transistors, organic thin film transistors, organic electroluminescent devices, organic solar cells, organic optical detectors and organic photoreceptors), organic light emitting diode of emission layer (preferred), electron transport layer and hole blocking layer, for medicine for phototherapy of skin to treat and prevent psoriasis, atopic dermatitis, jaundice, neonatal jaundice, vitiligo, inflammation, Schwarzen and wound healing, in cosmetics to reduce and prevent skin aging, skin wrinkles, crow's feet, acne, blackheads and cellular damage, and in displays and for illumination (all claimed).    ADVANTAGE - (I): have low sublimation temperature, high temperature stability, oxidation stability and glass transition temperature; and provide electronic device with high efficiencincy, low operating voltage and long lifetime.    DETAILED DESCRIPTION - Substituted fluorene compounds of formula (I) are new.    R1=straight-chain alkyl, alkoxy or thioalkyl having 1-20C, branched or cyclic alkyl, alkoxy or thioalkyl having 3-20C, alkenyl or alkynyl having 2-20C (all optionally substituted with R4, or at least one CH2 group is replaced with -R4C=CR4-, -C(C)-, Si(R4)2, C=O, C=S, C=NR4, -C(=O)O-, -C(=O)NR4-, P(=O)(R4), -O-, -S-, SO or SO2, or at least one hydrogen atom is replaced with D, F, Cl, Br, I, CN or NO2), 5-30C aryl or heteroaryl, 5-60C aryloxy, 5-60C aralkyl (all optionally substituted with R4), H, D, F, Cl, Br, I, C(=O)R4, CN, Si(R4)3) NO2), P(=O) (R4)2, S (=O)R4 or S(=O)2R4;    R2, R3=straight-chain alkyl, alkoxy or thioalkyl having 1-20C, branched or cyclic alkyl, alkoxy or thioalkyl having 3-20C, alkenyl or alkynyl having 2-20C (all optionally substituted with R4, or at least one CH2 group is replaced with -R4C=CR4-, -C(C)-, Si(R4)2, C=O, C=S, C=NR4, -C(=O)O-, -C(=O)NR4-, P(=O)(R4), -O-, -S-, SO or SO2, or at least one hydrogen atom is replaced with D, F, Cl, Br, I, CN or NO2), 5-30C aryl or heteroaryl, 5-60C aryloxy, 5-60C aralkyl (all optionally substituted with R4), H, D, F, Cl, Br, I, C(=O)R4, CN, Si(R4)3) NO2), P(=O) (R4)2, S (=O)R4, S(=O)2R4 or N(R4)2;    R4=straight-chain alkyl, alkoxy or thioalkyl having 1-20C, branched or cyclic alkyl, alkoxy or thioalkyl having 3-20C, alkenyl or alkynyl group having 2-20C (all optionally substituted with R5, or at least one CH2 group is replaced with -R5C=CR5-, -C(C)-, Si(R5)2, C=O, C=S, C=NR5, -C(=O)O-, -C(=O)NR5-, P(=O)(R5), -O-, -S-, SO or SO2, or at least one hydrogen atom is replaced with D, F, Cl, Br, I, CN or NO2), 5-30C aryl or heteroaryl, 5-30C aryloxy or heteroaryloxy (both substituted with R5), H, D, F, Cl, Br, I, C(=O)R5, CN, Si(R5)3, NO2, P(=O)(R5)2, S(=O)R5, S(=O)2R5 or N(R5)2;    R5=1-20C aliphatic hydrocarby, 5-30C aryl or heteroaryl (in which at least one hydrogen is replaced with D or F), H, D or F, where at least two adjacent R5 are fused together to form mono- or poly-cyclic aliphatic ring; either    p, q, r=0 or 1; or    p+q+r=1, preferably p is 1 and r is 1; either    Z1-Z3=R3 (when p, q, r is 0); or    Z1-Z3=substituted amine moiety of formula (-B1-N-Ar1Ar2) (II) (when p, q, r is 1);    B1=6-30C arylene or 5-30C heteroarylene (both optionally substituted with R4);    Ar1, Ar2=6-60C aryl or 5-60C heteroaryl (both substituted with R6), where at least one of the two groups of Ar1 and Ar2 is fluoro group; and    R6=straight-chain alkyl, alkoxy or thioalkyl having 1-20C, branched or cyclic alkyl, alkoxy or thioalkyl having 3-20C, alkenyl or alkynyl group having 2-20C (all optionally substituted with R5, or at least one CH2 group is replaced with -R5C=CR5-, -C(C)-, Si(R5)2, C=O, C=S, C=N54, -C(=O)O-, -C(=O)NR5-, P(=O)(R5), -O-, -S-, SO or SO2, or at least one hydrogen atom is replaced with D, F, Cl, Br, I, CN or NO2), 5-30C aryl or heteroaryl, 5-30C aryloxy or heteroaryloxy (both substituted with R5), H, D, F, Cl, Br, I, C(=O)R5, CN, Si(R5)3, NO2, P(=O)(R5)2, S(=O)R5 or S(=O)2R5.    Provided that: two R1 groups are fused together to form spiro compound, which is formed in position 9 of fluorene, and spirobifluorenes are excluded; and at least two R2 groups or at least two R3 groups are fused together to form ring (optionally). INDEPENDENT CLAIMS are also included for:    (1) preparation of (I);    (2) oligomer, polymer or dendrimer comprising (I), where the bonds in (I) having R1-R6 substituted positions may be located at polymer, oligomer or dendrimer;    (3) composition comprising (I) or the oligomer, polymer or dendrimer, and at least one an additional material including fluorescent emitter, phosphorescent emitter, host material, matrix material, electron transport material, electron injection material, hole conductor material, hole injection material, electron blocking material, hole blocking material and p-dopant;    (4) formulation comprising (I), or the polymer, oligomer or dendrimer, or the composition and at least one solvent;    (5) an electronic device, comprising (I), or the polymer, oligomer or dendrimer, or the composition; and    (6) manufacturing the electronic device, comprising at least one organic layer is applied by vapor deposition or from solution.