NOVELTY - Silyl substituted anthracene compound (I) is new.    USE - (I) is useful in organic electronic device such as organic electro luminescence device (preferred), organic field effect transistor, organic thin film transistor, organic light emitting transistor, optical integrated circuit, organic solar cell, organic field quenching device, organic photoreceptor, light emitting electrochemical cell or organic laser diode. The organic electro luminescence device is useful as host material for fluorescence emitter, as electron transport material and/or as hole blocking material (when R is (hetero)aromatic ring system); and as emitting compound and/or as hole transport material (when R is N(Ar1)2) (all claimed).    ADVANTAGE - (I) exhibits high thermal stability, high glass transition temperature, high redox stability and good solubility in organic solvent.    DETAILED DESCRIPTION - Silyl substituted anthracene compound of formula (I) is new.    Ar = 1-naphthyl or 9-anthryl group, in which one or two carbon atoms can be replaced by N and substituted with one or more of R1 and/or N(Ar1)2, where both remainders Ar1 are connected by a single bond, O, S, N(R1) or C(R1)2;    R = (hetero)aromatic ring with 5-40C atoms, substituted with one or more of R1 or N(Ar1)2, where both remainders Ar1 are connected by a single bond, O, S, N(R1) or C(R1)2;    Ar1 = (hetero)aromatic ring with 5-40C atoms, substituted with one or more of R1;    Y1 = a bivalent group with 1-40C atoms, -O-, -S-, -NR1-, -P(=O)R1- or a single bond;    R1 = alkyl-, alkoxy- or thioalkoxy with 1-40C atoms or branched or cyclic alkyl-, alkoxy- or thioalkoxy with 3-40C atoms (both substituted with one or more of R3, where one or more non-adjacent CH2 groups are replaced by -R3C=CR3-, -C=C-, Si(R3)2, Ge(R3)2, Sn(R3)2, C=O, C=S, C=Se, C=NR3, -O-, -S-, -N(R3)- or -CONR3-, where one or more hydrogen atoms are replaced by F, Cl, Br, I, CN or NO2), (hetero)aryl with 5-24C aromatic ring atoms (substituted with one or more of R3), (hetero)aryloxy with 5-24C aromatic ring atoms (substituted with one or more of R3), a combination out of two, three, four or five of these systems, Si(R2)3 (preferred), F, Cl, Br, I, CN, N(R3)2 or NO2; either    R2 = 1-40C-alkyl, 3-40C-cyclic alkyl (where one or more adjacent CH2 group can be bonded directly to the silicon, which can be replaced by -R3C=CR3-, -C?=C-, Si(R3)2, Ge(R3)2, Sn(R3)2, C=O, C=S, C=Se, C=NR3, -O-, -S-, -N(R3)- or -CONR3 and where one or more H atom can be replaced by F, Cl, Br, I, CN or NO2), (hetero)aryl with 5-24 aromatic ring or (hetero)aryloxy (both are substituted by one or more R3); or    two or more R2 = a mono or polycyclic ring system;    R3 = H or 1-20C-hydrocarbon, which aliphatic or aromatic can be replaced by F; or    R3 (two or more) = mono-, polycyclic-, aliphatic- or aromatic ring system;    n = 0-4; and    m = 0-5.    At least one variable of R1 represents Si(R2)3.    INDEPENDENT CLAIMS are included for:    (1) the preparation of (I);    (2) an organic electronic device comprising (I); and    (3) an organic electroluminescence device comprising at least an emitting layer, at least an hole transport layer, hole injection layer, a hole blocking layer and/or electron transport layer, and (I).