TECHNOLOGY FOCUS - POLYMERS - Preparation (Disclosed): Preparing (C1) comprises linking one of indenofluorene, triarylamine, phenanthrene or vinyltriarylamine monomers to form a substituted 6,12-dihydro-indeno(1,2-b)fluorene monomer of formula (p1) and polymerizing (p1) via Suzuki polymerization to form (C1).P1 = Cl, Br, I, O-tosylate, O-triflate, O-mesylate, O-nonaflate, SiCH3(3-z)Fz, O-SO2Z2, B(OZ1a)2 , -CZ2=C(Z2)2, -CCH or Sn(Z2)3; eitherZ2, Z1a = alkyl or aryl (both optionally substituted; orZ1aZ1a = cyclyl; andz = 1 or 2.Preferred Components: Both Ar1 and at least one Ar2 has electron transport property or hole transport property, and the difference between the lowest unoccupied molecular orbital of the Ar2 and main chain is less than 0.2 eV, preferably less than 0.1 eV. Ar1 has electron transport property, and highest unoccupied molecular orbital of the Ar2 is at least 0.3 eV higher, preferably 0.4 eV higher that that of the main chain. There are at least two adjacent single bonds along the main chain of A1. The electronic device comprises a conductive polymer layer and/or a hole transporting layer, and organic compound is coated directly onto the conductive polymer and/or hole transport layer. Preferred Definitions:    A1 = alkyl, alkylsilyl, silyl, alkyloxyalkyl or alkylthioalkyl with 1-12C (all optionally substituted with H, halo, alkyl, heteroalkyl or cycloalkyl) or fluorinated 1-12C alkylene or alkyleneoxy;    Ar2 = electron transporting groups comprising imidazoles, pyridines, pyrimidines, pyridazines, pyrazines, chinolines, chinoxalines, anthracenes, benzanthracenes, pyrenes, perylenes, benzimidazoles, triazines, ketones, phosphinoxides, phenazines, phenanthrolines, triarylboranes, phenanthrenes, fluorenes, indenofluorenes, isomers or their derivatives, hole transport group comprising amines, triarylamines, thiophenes, carbazoles, indolocarbazoles, phthalocyanines, porphyrins or their isomers and derivatives, fused cyclic moiety of formula (d1), substituted aryl compounds of formula ((-AR11-Y1(Ar13)-Ar12-)o) (d2), substituted phenanthrene moiety of formula (d3), substituted spiro moiety of formula (d4), substituted aryl containing amide moiety of formula (-(Ar16)i-(N(Ar18)(Ar19))r-CY2=CY2-(Ar19)k-N(Ar18)(Ar17) (d6) or substituted thiophene containing aryl moiety of formula (d5);    Ar1 = (d1-d6);    D1, E, E1 = divalent group comprising -CR1R2-, -NR1-, -PR1-, -O-, -S-, -SO-, -SO2-, -CO-, -CS-, -CSe-, -P(=O)R1-, -P(=S)R1- or -SiR1R2-;    T1 = carbyl or hydrocarbyl (both optionally substituted with 1-40C that is optionally substituted and optionally comprising at least one hetero atom), H, halo, -CN, -NC, -NCO, -NCS, -OCN, -SCN, -C(=O)NR3R4, -C(=O)X, -C(=O)R3, -NH2, -NR3R4, -SH, -SR3, -SO3H, -SO2R3, -OH, -NO2, -CF3, -SF5 or silyl; either    R1, R2 = T1; or    fluoreneR1R2 = spiro group;    X = halo;    R3, R4 = carbyl or hydrocarbyl (both optionally substituted and optionally comprising at least one hetero atom) or H;    g, h, a, b = 0-1;    m = greater than or equal to 1;    Ar4, Ar5 = mono- or polynuclear aryl (optionally substituted and optionally fused to 7,8-positions or 8,9-positions of the indenofluorene);    Y1 = N, P, B, P=O, PF2, P=S, As, As=O, As=S, Sb, Sb=O, Sb=S, Si-R1 or Ge-R1;    Ar12 = mononuclear or polynuclear aryl (optionally substituted);    Ar13 = optionally substituted mononuclear or polynuclear aryl (optionally substituted by a bridging group linking different chain residues of (C1));    o = 1-3;    X1, X2 = -CR1=CR1-, -CC- or -N-Ar8-;    Ar6-Ar8 = 2-40C bivalent aromatic or heteroaromatic ring (optionally substituted by at least one R1);    p = 0-2;    X3 = CH, CR1 or N;    Z1 = single bond, CR5R6, CR5R6-CR5R6, CR5CR6, O, S, NR5, C=O, R1-P=O, SO2, S=O, C=CR5R6 or SiR5R6;    R5, R6 = R1;    q = 0-4;    Ar16 = mono- or polycyclic aryl or heteroaryl (optionally substituted by at least one R21);    Ar17 = mono- or polycyclic aryl or heteroaryl (optionally substituted by at least one R22);    Ar18 = mono- or polycyclic aryl or heteroaryl (optionally substituted by at least one R23);    Ar19 = mono- or polycyclic aryl or heteroaryl (optionally substituted by at least one R24); either    Ar11 = mononuclear or polynuclear aryl (optionally substituted) or single bond; and    Ar14 = mononuclear or polynuclear aryl or heteroaryl (optionally substituted and optionally fused to the 2,3-positions of thiophene and/or selenophene); and    Y2 = 1-40C carbyl or hydrocarbyl (optionally substituted and optionally consisting at least one hetero atom); or    Y2Y2, Y2R21, Y2R24, Y2Ar11 or Y2Ar14 = aromatic, mono- or polycyclic ring system; either    R21-R24 = T1; or    R21R24 = aliphatic or aromatic, mono- or polycyclic ring system, where R21-R23 denotes a covalent bond in a polymer;    i, k = 1-3; and    r = 0-1.    EXAMPLE - Mixture of dibromo indenofluorenone (6.5 g), 4,4'-tetraphenylbenzenediamine (20.6 g) and methanesulfonic acid (1.3 ml) were heated under nitrogen at 140 degrees C. The resulting mixture was cooled and dissolved in chloroform. The resulting solution was washed and dried. The solvent was partly removed and acetone was added to give a precipitate. The precipitate was filtrated and recrystallized to obtain a N1,N1'-(4,4'-(2,8-dibromo-12,12-dioctyl-6,12-dihydroindeno(1,2-b)fluorene-6,6-diyl)bis(4,1-phenylene))bis(N1,N4,N4-triphenylbenzene-1,4-diamine) (e1). Monomer composition (containing (in mole%) (e1) (2), 2,2'-(9,10-dioctylphenanthrene-2,7-diyl)bis(1,3,2-dioxaborolane) (50), (4-bromo-phenyl)-(4-((E)-2-(4-bromo-phenyl)-vinyl)-phenyl)-(4-tert-butyl-phenyl)-amine (2) and 2,8-dibromo-6,6-bis-(4-tert-butyl-phenyl)-12,12-dioctyl-6,12-dihydro-indeno(1,2-b)fluorene (46)) was polymerized via Suzuki coupling to obtain polymer.