Electroluminescent polymers and use thereof in light-emitting devices

A conjugated copolymer containing at least one first monomer unit having the structure of formula (VII), (VIII), (IX) and/or (X)

• and at least one second monomer unit comprised of a monocyclic, bicyclic, or polycyclic arylene, heteroarylene, substituted arylene or substituted heteroarylene unit, wherein:
• L is alkylene, alkenylene, substituted alkylene, substituted alkenylene, heteroalkylene, heteroalkenylene, substituted heteroalkylene, substituted heteroalkenylene, arylene, heteroarylene, substituted arylene or substituted heteroarylene;
• m is zero or 1;
• Q1 and Q2 are independently selected from the group consisting of H, aryl, heteroaryl, substituted aryl, substituted heteroaryl, alkyl, and substituted alkyl, and Q3 is selected from the group consisting of alkyl and substituted alkyl, with the proviso that when m is 1, Q1 and Q2 are other than H;
• and
• A is a negatively charged counterion;
• and
• W, X, Y, Z, X1, Y1, and Z1 are independently selected from the group consisting of N, CH, and CR1, wherein R1 is selected from the group consisting of —(L)n—N(Q1Q2), wherein n is zero or 1, C1-C20 hydrocarbyl, substituted C1-C20 hydrocarbyl, heteroatom-containing C1-C20 hydrocarbyl, substituted heteroatom-containing C1-C20 hydrocarbyl, halo, cyano, nitro, —SO3H, —COOH, —O(PO)(OH)2, and organic and inorganic sulfonate, carboxylate and phosphonate salts, and further wherein Z and Z1 may be linked to form a cyclic group.

A conjugated copolymer containing at least one first monomer unit having the structure of formula (VIIa), (VIIIa), (IXa), and/or (Xa)

• and at least one second monomer unit comprised of a monocyclic, bicyclic, or polycyclic arylene, heteroarylene, substituted arylene or substituted heteroarylene unit, wherein:
• Ar3 is arylene, heteroarylene, substituted arylene or substituted heteroarylene containing one to three aromatic rings;
• Ar4 and Ar5 are independently selected from the group consisting of aryl, heteroaryl, substituted aryl and substituted heteroaryl containing one or two aromatic rings;
• and
• W, X, Y, Z, X1, Y1, and Z1 are independently selected from the group consisting of N, CH, and CR1, wherein R1 is selected from the group consisting of —(Ar3)n—NAr4Ar5, wherein n is zero or 1, C1-C12 alkyl, fluorinated C1-C12 alkyl, C1-C12 alkoxy, fluoro, cyano, nitro, —SO3H, —COOH, —O(PO)(OH)2, and organic and inorganic salts of sulfonic acid, carboxylic acid and phosphonic acid groups, or wherein Z and Z1 are linked to form cyclic group so as to form a three-ring compound having the structure of formula (VIa)
• in which R2 and R3 are independently selected from the group consisting of hydrogen, alkyl, substituted alkyl, heteroatom-containing alkyl, and substituted heteroatom-containing alkyl.

A conjugated copolymer having the structure of formula (XIII)

• wherein R4 and R5 are selected from the group consisting of:
• hydrogen;
• linear or branched alkyl substituents containing 4 to 12 carbon atoms;
• cyano-substituted alkyl substituents containing 1 or 2 cyano groups on a 4 to 10 carbon atom linear or branched alkyl group;
• and polyether substituents containing 2 to 5 ether oxygen atoms separated from one another 1, 2 or 3 carbon alkylene bridges.