Photosensitive compositions, preparation methods thereof, quantum dot polymer composite prepared therefrom

A quantum dot-polymer composite pattern comprising:

• a first quantum dot polymer composite, wherein the first quantum dot polymer composite is configured to emit a first light,
• wherein the first quantum dot polymer composite comprises a matrix comprising an acid group-containing polymer and a polymerization product of a photopolymerizable monomer comprising a carbon-carbon double bond;
• a plurality of quantum dots dispersed in the matrix;
• wherein the acid group-containing polymer has an acid value of greater than or equal to about 80 milligrams of KOH per gram of acid group-containing polymer as measured by a titration with a solution of potassium hydroxide,
• wherein the quantum dots comprise an organic ligand, and wherein the organic ligand comprises RCOOH, RNH2, R2NH, R3N, RSH, R3P, ROH, RCOOR′, RPO(OH)2, R2POOH (wherein R and R′ are independently a C5 to C24 aliphatic hydrocarbon group, a C5 to C20 alicyclic hydrocarbon group, or a C6 to C20 aromatic hydrocarbon group), or a combination thereof,
• wherein the acid group-containing polymer is a copolymer consisting of a first repeating unit, a second repeating unit, and a third repeating unit,
• wherein the first repeating unit is 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)n1—COOH (wherein n1 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 C6 to C30 alicyclic hydrocarbon group, or a C1 to C15 aliphatic hydrocarbon group substituted with a C6 to C30 aromatic hydrocarbon group or a C6 to C30 alicyclic hydrocarbon group, and
• * indicates a portion connected 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 C6 to C30 alicyclic hydrocarbon group, or a C1 to C15 aliphatic hydrocarbon group substituted with a C6 to C30 aromatic hydrocarbon group or a C6 to C30 alicyclic hydrocarbon group,
• n is an integer of 1 to 3, and
• * indicates a portion connected to an adjacent atom;
• wherein the second repeating unit is a repeating unit represented by Chemical Formula 2, a repeating unit represented by Chemical Formula 4, a repeating unit represented by Chemical Formula 5, a repeating unit represented by Chemical Formula A, 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 C6 to C30 alicyclic hydrocarbon group, or a C1 to C15 aliphatic hydrocarbon group substituted with a C6 to C30 aromatic hydrocarbon group or a C6 to C30 alicyclic hydrocarbon group,
• R3 is hydrogen or a C1 to C3 alkyl group, and
• * indicates a portion connected 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 C6 to C30 alicyclic hydrocarbon group, or a C1 to C15 aliphatic hydrocarbon group substituted with a C6 to C30 aromatic hydrocarbon group or a C6 to C30 alicyclic hydrocarbon group,
• R2 is a C1 to C15 aliphatic hydrocarbon group, a C6 to C30 aromatic hydrocarbon group, a C6 to C30 alicyclic hydrocarbon group, or a C1 to C15 aliphatic hydrocarbon group substituted with a C6 to C30 aromatic hydrocarbon group or a C6 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 connected 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 C6 to C30 alicyclic hydrocarbon group, and
• * indicates a portion connected 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 C6 to C30 alicyclic hydrocarbon group, or a C1 to C15 aliphatic hydrocarbon group substituted with a C6 to C30 aromatic hydrocarbon group or a C6 to C30 alicyclic hydrocarbon group,
• R3 is hydrogen or a C1 to C3 alkyl group, and
• * indicates a portion connected to an adjacent atom,
• wherein the third repeating unit is a repeating unit represented by Chemical Formula 3:
• wherein
• each of R1 and R2 is independently 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 C6 to C30 alicyclic hydrocarbon group, or a C1 to C15 aliphatic hydrocarbon group substituted with a C6 to C30 aromatic hydrocarbon group or a C6 to C30 alicyclic hydrocarbon group,
• Z is a hydroxyl group (—OH), a mercapto group (—SH), or an amino group (—NHR, wherein R is hydrogen or a C1 to C5 alkyl group), and
• * indicates a portion connected to an adjacent atom,
• wherein in the composite, the plurality of quantum dots are configured to emit the first light with a quantum yield of greater than or equal to about 60% when being irradiated with an excitation light, and
• wherein an amount of the plurality of quantum dots comprising the organic ligand is greater than about 5 weight percent based on a total amount of the composite.