Compositions, quantum dot polymer composites prepared therefrom, and devices including the same

A composition comprising:

• a plurality of quantum dots;
• a polymer;
• a thiol compound comprising at least two thiol groups at its end terminals;
• a polyvalent metal compound;
• a polymerizable monomer comprising a carbon-carbon double bond;
• a photoinitiator;
• and
• a solvent,
• wherein the polymer comprises
• a copolymer of a monomer combination comprising a first monomer comprising a carboxylic acid group, a second monomer not comprising a carboxylic acid group, and optionally, a third monomer comprising a carbon-carbon double bond and a hydrophilic moiety and not comprising a carboxylic acid group;
• a multiple aromatic ring-containing polymer comprising a carboxylic acid group (—COOH) and a main chain comprising a backbone structure incorporated in the main chain, wherein the backbone structure comprises a quaternary carbon atom, which is a part of a cyclic group, and two aromatic rings bound to the quaternary carbon atom;
• or
• a combination thereof,
• wherein the polyvalent metal compound comprises a metal chloride, an alkylated metal, a metal acetate, a metal (meth)acrylate, a metal dialkyldithiocarbamate, or a combination thereof, and
• wherein the copolymer comprises a first repeating unit derived from the first monomer and a second repeating unit derived from the second monomer,
• wherein the first repeating unit comprises a repeating unit represented by Chemical Formula 1-1, a repeating unit represented by Chemical Formula 1-2, or a combination thereof:
• wherein
• R1 is hydrogen, a C1 to C3 alkyl group, or —(CH2)n—COOH (wherein n is 0 to 2),
• R2 is hydrogen, a C1 to C3 alkyl group, or —COOH,
• L is a single bond, a C1 to C15 aliphatic hydrocarbon group, a C6 to C30 aromatic hydrocarbon group, a C3 to C30 alicyclic hydrocarbon group, or a C1 to C15 aliphatic hydrocarbon group substituted with a C6 to C30 aromatic hydrocarbon group or a C3 to C30 alicyclic hydrocarbon group, and
• * indicates a portion linked to an adjacent atom;
• wherein
• R1 is hydrogen, a C1 to C3 alkyl group, or —(CH2)n1—COOH (wherein n1 is 0 to 2),
• R2 is hydrogen or a C1 to C3 alkyl group,
• L is a C1 to C15 alkylene group, a C1 to C15 alkylene group wherein at least one methylene group is substituted with —C(═O)—, —O—, or —C(═O)O—, a C6 to C30 aromatic hydrocarbon group, a C3 to C30 alicyclic hydrocarbon group, or a C1 to C15 aliphatic hydrocarbon group substituted with a C6 to C30 aromatic hydrocarbon group or a C3 to C30 alicyclic hydrocarbon group,
• n is an integer of 1 to 3, and
• * indicates a portion linked to an adjacent atom;
• wherein the second repeating unit comprises a repeating unit represented by Chemical Formula 2-1, a repeating unit represented by Chemical Formula 2-2, a repeating unit represented by Chemical Formula 2-3, a repeating unit represented by Chemical Formula 2-4, or a combination thereof:
• wherein
• R1 is hydrogen or a C1 to C3 alkyl group,
• R2 is a C1 to C15 aliphatic hydrocarbon group, a C6 to C30 aromatic hydrocarbon group, a C3 to C30 alicyclic hydrocarbon group, or a C1 to C15 aliphatic hydrocarbon group substituted with a C6 to C30 aromatic hydrocarbon group or a C3 to C30 alicyclic hydrocarbon group,
• R3 is hydrogen or a C1 to C3 alkyl group,
• * indicates a portion linked to an adjacent atom;
• wherein
• R1 is hydrogen or a C1 to C3 alkyl group,
• L is a C1 to C15 alkylene group, a C1 to C15 alkylene group wherein at least one methylene group is substituted with —C(═O)—, —O—, or —C(═O)O—, a C6 to C30 aromatic hydrocarbon group, a C3 to C30 alicyclic hydrocarbon group, or a C1 to C15 aliphatic hydrocarbon group substituted with a C6 to C30 aromatic hydrocarbon group or a C3 to C30 alicyclic hydrocarbon group,
• R2 is a C1 to C15 aliphatic hydrocarbon group, a C6 to C30 aromatic hydrocarbon group, a C3 to C30 alicyclic hydrocarbon group, or a C1 to C15 aliphatic hydrocarbon group substituted with a C6 to C30 aromatic hydrocarbon group or a C3 to C30 alicyclic hydrocarbon group,
• R3 is hydrogen or a C1 to C3 alkyl group,
• n is an integer of 1 to 3, and
• * indicates a portion linked to an adjacent atom;
• wherein
• each of R1 and R2 is independently hydrogen or a C1 to C3 alkyl group,
• Ar is a substituted or unsubstituted C6 to C30 aromatic hydrocarbon group or a substituted or unsubstituted C3 to C30 alicyclic hydrocarbon group, and
• * indicates a portion linked to an adjacent atom;
• wherein
• R1 is hydrogen or a C1 to C3 alkyl group,
• R2 is a C1 to C15 aliphatic hydrocarbon group, a C6 to C30 aromatic hydrocarbon group, a C3 to C30 alicyclic hydrocarbon group, or a C1 to C15 aliphatic hydrocarbon group substituted with a C6 to C30 aromatic hydrocarbon group or a C3 to C30 alicyclic hydrocarbon group,
• R3 is hydrogen or a C1 to C3 alkyl group, and
• * indicates a portion linked to an adjacent atom.