NOVELTY - Substituted phenanthrene compounds (I) are new.    USE - (I) are useful: in oligomer, dendrimer and polymer; in formulation; and as hole transport material in a hole transport layer, an electron blocking layer and a hole injection layer, as emitting compound in an emitting layer, and as matrix compound together with at least one emissive compound in an emitting layer in electronic device, preferably organic electroluminescent devices (preferred), 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, organic light-emitting electrochemical cells and organic laser diodes (all claimed).    ADVANTAGE - The polymers, oligomers and dendrimers have long life time, high efficiencies and good color coordinate.    DETAILED DESCRIPTION - Substituted phenanthrene compounds of formula (I) are new.    R1 = 6-40C aromatic ring, 5-40C heteroaromatic ring (both optionally substituted by R6), straight-chain alkyl or alkoxy having 1-20C, branched or cyclic alkyl or alkoxy having 3-20C, alkenyl or alkynyl having 2-20C (all optionally substituted by R6, and at least one CH2 in the alkyl, alkoxy, alkenyl and alkynyl are optionally replaced by -R6C=CR6-, -C(C)-, Si(R6)2, C=O, C=NR6, -C(=O)O-, -C(=O)NR6, NR6, P(=O)(R6), -O-, -S-, SO or SO2), diarylamino moiety of formula (II), preferably diarylamino moiety of formula (-N(Ar1)2) (IIa), carbazol-9-yl moiety of formula (IIb) 9,10-dihydroacridin-10-yl moiety of formula (IIc), 5,10-dihydrophenazin-5-yl moiety of formula (IId), 10H-phenoxazin-10-yl moiety of formula (IIe), 10H-phenothiazin-10-yl moiety of formula (IIf) or 9H-tribenzo(b,d,f)azepin-9-yl moiety of formula (IIg), or fused heteroaromatic moiety of formula (III), preferably diarylamino-aryl moiety of formula (-Ar2-N(Ar1)2) (IIIa), carbazol-9-aryl moiety of formula (IIIb), 9,10-dihydroacridin-10-aryl moiety of formula (IIIc), 5,10-dihydrophenazin-5-aryl moiety of formula (IIId), 10H-phenoxazin-10-aryl moiety of formula (IIIe), 10H-phenothiazin-10-aryl moiety of formula (IIIf) or 9H-tribenzo(b,d,f)azepin-9-aryl moiety of formula (IIIg), nitrogen containing heteroaromatic moieties of formulae (IIIh)-(IIIo), H, D, F, C(=O)R6, CN, Si(R6)3, N(R6)2, P(=O)(R6)2, OR6, S(=O)R6 or S(=O)2R6;    R2, R3 = 6-40C aromatic ring, 5-40C heteroaromatic ring (both optionally substituted by R6), straight-chain alkyl or alkoxy having 1-20C, branched or cyclic alkyl or alkoxy having 3-20C, alkenyl or alkynyl having 2-20C (all optionally substituted by R6, and at least one CH2 group in the alkyl, alkoxy, alkenyl and alkynyl are optionally replaced by -R6C=CR6-, -C(C)-, Si(R6)2, C=O, C=NR6, -C(=O)O-, -C(=O)-NR6, NR6, P(=O)(R6), -O-, -S-, SO or SO2), H, D, F, C(=O)R6, CN, Si(R6)3, P(=O)(R6)2, OR6, S(=O)R6 or S(=O)2-R6;    R6 = 6-40C aromatic ring, 5-40C heteroaromatic ring (both optionally substituted by R7), straight-chain alkyl or alkoxy having 1-20C, branched or cyclic alkyl or alkoxy having 3-20C, alkenyl or alkynyl having 2-20C, (all optionally substituted by R7, at least one CH2 in the alkyl, alkenyl and alkynyl are optionally replaced by -R7C=CR7-, -C(C)-, Si(R7)2, C=O, C=NR7, -C(=O)O-, -C(=O)-NR7-, NR7, P(=O)(R7), -O-, -S-, SO or SO2), H, D, F, C(=O)-R7, CN, Si-(R7)3, N(R7)2, P(=O)(R7)2, OR7, S(=O)R7 or S(=O)2-R7, where at least two substituent's of R6 are fused together to form to ring;    R7 = aliphatic, aromatic or heteroaromatic organic group having 1-20C (at least one H atom is optionally replaced by D, F or CN), H, D, F or CN;    Ar1, Ar2 = 6-40C aromatic ring or 5-40C heteroaromatic ring (both optionally substituted by R4);    X = o-phenylene (optionally substituted by R5), single bond, B(R5), C(R5)2, -C(R5)2-C(R5)2-, -C(R5)=C(R5)-, -C(R5)2-O-, -C(R5)2-NR5-, Si (R5)2, C=O, NR5, PR5, P(=O)-R5, O, S, S=O or SO2;    R4 = straight-chain alkyl or alkoxy having 1-20C, branched or cyclic alkyl or alkoxy having 3-20C, alkenyl or alkynyl having 2-20C, 6-40C aromatic ring, 5-40C heteroaromatic ring (all optionally substituted by R6, and at least one CH2 in the alkyl, alkoxy, alkenyl and alkynyl are optionally replaced by -R6C=CR6-, -C(C)-, Si(R6)2, C=O, C=NR6, -C(=O)O-, -C(=O)-NR6, NR6, P(=O)(R6), -O-, -S-, SO or SO2), H, D, F, C(=O)-R6, CN, Si(R6)3, N(R6)2, P(=O)(R6)2, OR6, S(=O)-R6 or S(=O)2-R6, where at least two substituent's of R4 and R5 are fused together to form a ring; and    i = 0 or 1.    Provided that at least one of R1 is selected in (I) is (II) and/or (III), at least one R1 is bonded at 1-position on the phenanthrene and 4-position on the phenanthrene. INDEPENDENT CLAIMS are also included for:    (1) preparation of (I);    (2) an oligomer, dendrimer or polymer, comprising (I);    (3) formulation, comprising (I) or the polymer, oigomer or dendrimer and at least one solvent; and    (4) an electronic device, preferably 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, organic light-emitting electrochemical cells, organic laser diodes and organic electroluminescent devices, comprising (I).