| 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, -OCm and -OCn 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.
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