NOVELTY - Polymer comprising at least an aryl structural unit (I), is new.    USE - The polymer is useful in organic electronic device and/or organic electroluminescence device, where the organic electronic device is an organic and/or polymeric organic electroluminescent device, organic integrated control, organic field-effect-transistors, organic thin film transistors, organic solar cells, organic laser diode, organic photo-voltaic elements or devices or organic photoreceptors (claimed).    ADVANTAGE - The polymer provides organic electroluminescence device with good color efficiency and high lifetime. The organic electroluminescence device requires low operating voltages. The polymers can be obtained in high yield.    DETAILED DESCRIPTION - Polymer comprising at least an aryl structural unit of formula (I), is new.    dotted line = bonding to further structural unit of the polymer;    L1, L2 = a covalent bond, 1-10C-alkylene, 2-10C-alkenylene, 2-10C-alkynylene or 1-10C Si-silylene group, where: CH2-units are optionally replaced by NR, O or S, and SiH2-units are replaced by O;    W1 = a tetravalent unit comprising C, Si, Ge, or a group of formula (II) or (III);    D1 = C(R)2, O, S or NR;    E, J = CR or N;    n = 1-3;    m = 0-2;    R = H, F or 1-6C-alkyl;    U1, V1, V2 = a covalent bond or a bivalent unit comprising CR1R2, C=O, NR1, O, SiR1R2, P=O, S or GeR1R2;    R1, R2 = H, F, 1-40C-alkyl, 2-40C-alkenyl, 2-40C-alkynyl, optionally substituted 6-40C-aryl or optionally substituted 5-25-membered heteroaryl;    Ar1, Ar2 = a 5-25-membered optionally substituted (hetero)aryl ring;    Ar3-Ar5 = 6-40C-aryl or 5-25-membered heteroaryl (both optionally substituted).    Provided that one of E, D and J is different of CR or C(R)2; and if W1 is (II) or (III), then a different atom of the unit W1 is bonded at the position 1 and 3. INDEPENDENT CLAIMS are included for:    (1) the preparation of the polymers;    (2) an aryl compound of formula (VI);    (3) a mixture of polymers with further polymer, oligomer, dendritic and/or low molecular substance;    (4) a solution of the polymer or the mixture in one or more solvents; and    (5) an organic electronic device with one or more active layers, where at least one of the active layers contains the polymer or the mixture.    Z, Z1 = halo, O-tosylate, O-triflate, O-SO2R3, B(OR3)2 or Sn(R3)3; and    R3 = H, an aliphatic 1-20C-hydrocarbon or an aromatic 5-20C-hydrocarbon atoms, preferably Br, I or B(OR3)2, where two or more R3 together forms a ring system.