Aryl-substituted poly-p-arylenevinylenes

摘要

Aryl-substituted poly-p-arylenevinylenes comprising a repeating unit of the formula (C1), in which one or more of the unsubstituted aromatic carbon atoms may be replaced by nitrogen atoms, -OC_m and -OC_n are alkoxy groups, m and n are integers from 2 to 6 with m+n=8, p is 0, 1, 2 or 3 and in which R is CN, Cl, F, CF₃, NO₂, or SO₃Z wherein Z is a monovalent cation such as Na⁺, or in which R is -XR¹ wherein the unit -X- represents a single bond, -O-, -S-, -CO-, -COO-, -OCO-, -SO-, -SO₂-, -N(R²)- or -N(R²)CO-, and wherein R¹ and R² are the same or different and constitute a straight-chain branched or cyclic C₁-C₂₀ alkyl group or together an C₁-C₂₀ alkylene group, in which C₁-C₂₀ alkyl or C₁-C₂₀ alkylene group one or more hydrogens are optionally substituted by F or a C₄-C₁₂ aryl group and/or one or more non-adjacent -CH₂- units are optionally substituted by C₄-C₁₂ arylene, -O-, -S-, -CO-, -COO-, -OCO-, -SO-, -SO₂-, -N(R³)- or -N(R³)CO- where R³ is C₁-C₂₀ alkyl, or in which R is a C₄-C₁₂ aryl group which may or may not be substituted, polymers having viscosities at least equal to the viscosity of said aryl-substituted poly-p-arylenevinylenes and organic electroluminescent devices comprising such polymers.