NOVELTY - Conjugated polymer and dendrimer containing one or more triarylamine monomer (I), are new.    USE - The polymer, dendrimer, blend, solution or formulation is useful in an electronic component such as organic field-effect-transistor, organic thin film transistor, organic integrated control, organic photovoltaic cell, organic light-emitting diode (preferred), organic laser diode or organic photovoltaic element or device (claimed). The polymer and blend are also useful in polymer light-emitting diode, preferably an electro luminescence material.    ADVANTAGE - The polymer exhibits high photo stability, high lightning efficiency and high operational durability.    DETAILED DESCRIPTION - Conjugated polymer and dendrimer containing one or more triarylamine monomer (I) of formula (-(Ar1)a-(N(Ar3-Ar4))c-CY1=CY1-(Ar4)b-N(Ar3)-Ar2), are new.    Ar1 = mono or polycyclic aryl or heteroaryl (substituted by R1);    Ar2 = mono or polycyclic aryl or heteroaryl (substituted by R2);    Ar3 = mono or polycyclic aryl or heteroaryl (substituted by R3);    Ar4 = mono or polycyclic aryl or heteroaryl (substituted by R4); either    Y1 = H, F, Cl or carbon- or hydrocarbon groups with 1-40C atoms; or    2Y1, Y1+adjacent groups of R1, R4, Ar1 or Ar4 = aliphatic or aromatic, mono- or polycyclic ring system; either    R1-R3 = H, F, Cl, OH, CN, N(R)2, Si(R)3, B(R)2, a carbon- or hydrocarbon group with 1-40C atoms or a covalent bond in the polymer or dendrimer; and    R4 = H, F, Cl, OH, CN, N(R)2, Si(R)3, B(R)2, a carbon- or hydrocarbon group with 1-40C atoms; or    two or more of R1-R4 = aliphatic or aromatic, mono- or polycyclic ring system; either    R = H, linear, branched or cyclic 1-22C alkyl (where one or more non-adjacent CH2-groups can be replaced by -C(R0)=C(R0)-, -C?=C-, -N(R0)-, -Si(R0)2-, -O-, -S-, -CO-, -CO-O-, -O-CO-, -O-CO-O-, -S-CO-, -CO-S-, and that -O- and/or S atoms are indirectly connected together, where one or more H atoms are replaced by F, Cl or CN) or 5-40C aryl (where one or more C atoms can be replaced by O, S or N) substituted by one or more non-aromatic group R1; or    two or more of R, R+R1-R4 = an aromatic or aliphatic, mono- or polycyclic ring system;    R0 = H or 1-20C aliphatic or aromatic hydrocarbon;    a, b = 1-3; and    c = 0 or 1.    INDEPENDENT CLAIMS are included for:    (1) a blend or one or more polymer or dendrimer with one or more further polymer, oligomer, dendrimer or low molecular substance;    (2) a triarylamine monomer (I);    (3) a solution and formulation containing one or more polymer, dendrimer or blend in one or more solvents;    (4) an electronic component containing one or more polymer, dendrimer or blend;    (5) an electronic component such as organic field-effect-transistor, organic thin film transistor, organic integrated control, organic photovoltaic cell, organic light-emitting diode, organic laser diode or organic photovoltaic element or device; and    (6) the preparation of (I) comprising reacting an optionally substituted phenyl-4-bromophenyl-4-formyl phenylamine with optionally substituted (4-bromobenzyl)-diethylphosphonate in the presence of a base.    R1-R3 = a reactive group Z that is suitable for polymerization reaction;    Z = Cl, Br, I, O-tosylate, O-triflat, O-SO2Ra, B(OH)2, B(ORa)2 or Sn(Ra)3; and either    Ra = an optionally substituted alkyl or aryl; or    2Ra = an aromatic or aliphatic mono- or polycyclic ring system.