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1. A composition comprising:
a first monomer including at least three thiol groups, each located at a terminal end of the first monomer, wherein the first monomer is represented by the following Chemical Formula 1-1: wherein, in Chemical Formula 1-1, L1′ is carbon, a substituted or unsubstituted C6 to C30 arylene group, a substituted or a unsubstituted C3 to C30 heteroarylene group, a substituted or unsubstituted C3 to C30 cycloalkylene group, or a substituted or unsubstituted C3 to C30 heterocycloalkylene group; each of Ya to Yd is independently a direct bond, a substituted or unsubstituted C1 to C30 alkylene group; a substituted or unsubstituted C2 to C30 alkenylene group; or a C1 to C30 alkylene group or a C2 to C30 alkenylene group wherein at least one methylene group is replaced by sulfonyl, carbonyl, ether, sulfide, sulfoxide, ester, amide of formula —C(═O)NR— wherein R is hydrogen or a C1 to C10 alkyl group, imine of formula —NR— wherein R is hydrogen or a C1 to C10 alkyl group, or a combination thereof; and Ra to Rd are R1 or —SH, provided that at least three of Ra to Rd are —SH and R1 is hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C3 to C30 heteroaryl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C3 to C30 heterocycloalkyl group, a hydroxyl group, —NH2, a substituted or unsubstituted C1 to C30 amine group of formula —NRR′ wherein R and R′ are each independently hydrogen or a C1 to C30 alkyl group, an isocyanate group, an isocyanurate group, a (meth)acrylate group, a halogen, —ROR′ wherein R is a substituted or unsubstituted C1 to C20 alkylene group and R′ is hydrogen or a C1 to C20 alkyl group, an acyl halide of formula —RC(O)X wherein R is a substituted or unsubstituted alkylene group and X is a halogen, —C(═O)OR′ wherein R′ is hydrogen or a C1 to C20 alkyl group, —CN, or —C(═O)ONRR′ wherein R and R′ are each independently hydrogen or a C1 to C20 alkyl group; a second monomer including at least two unsaturated carbon-carbon bonds, each located at a terminal end of the second monomer, wherein the second monomer is represented by the following Chemical Formula 2: wherein, in Chemical Formula 2, X is an acrylate group, a methacrylate group, a C2 to C30 alkenyl group, a C2 to C30 alkynyl group, a substituted or unsubstituted C3 to C30 alicyclic group including a ring having a double bond or a triple bond in the ring, a substituted or unsubstituted C3 to C30 heterocycloalkyl group including a ring having a double bond or a triple bond in the ring, a C3 to C30 alicyclic group substituted with a C2 to C30 alkenyl group or a C2 to C30 alkynyl group, a C3 to C30 heterocycloalkyl group substituted with a C2 to C30 alkenyl group or a C2 to C30 alkynyl group, or a combination thereof; R2 is hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C3 to C30 heteroaryl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C3 to C30 heterocycloalkyl group, a hydroxy group, —NH2, a substituted or unsubstituted C1 to C30 amine group of formula —NRR′ wherein R and R′ are each independently hydrogen or a C1 to C30 alkyl group, an isocyanate group, an isocyanurate group, a (meth)acrylate group, a halogen, —ROR′ wherein R is a substituted or unsubstituted C1 to C20 alkylene group and R′ is hydrogen or a C1 to C20 alkyl group, an acyl halide of formula —RC(O)X wherein R is a substituted or unsubstituted alkylene group and X is a halogen, —C(═O)OR′ wherein R′ is hydrogen or a C1 to C20 alkyl group, —CN, or —C(═O)ONRR′ wherein R and R′ are each independently hydrogen or a C1 to C20 alkyl group; L2 is a single bond, a substituted or unsubstituted C1 to C30 alkylene group, a substituted or unsubstituted C6 to C30 arylene group, or a substituted or unsubstituted C3 to C30 heteroarylene group; Y2 is a single bond; or a substituted or unsubstituted C1 to C30 alkylene group; or a C1 to C30 alkylene group wherein at least one methylene group is replaced by a sulfonyl, a carbonyl, an ether, a sulfide, a sulfoxide, an ester, an amide of formula —C(═O)NR— wherein R is hydrogen or a C1 to C10 alkyl group, an imine of formula —NR— wherein R is hydrogen or a C1 to C10 alkyl group, or a combination thereof; n is an integer of 1 or more; k3 is an integer of 0 or 1 or more; k4 is an integer of 1 or more; the sum of n and k4 is an integer of 3 or more; n does not exceed the valance of Y2; and k3 and k4 does not exceed the valence of the L2; and a light emitting particle, wherein the first light emitting particle comprises a semiconductor nanocrystal comprising a Group II-VI compound, a Group III-V compound, or a combination thereof, wherein the light emitting particle has a core/shell structure having a first semiconductor nanocrystal being surrounded by a second semiconductor nanocrystal, and the first semiconductor nanocrystal being different from the second semiconductor nanocrystal. wherein the Group II-VI compound comprises a binary compound selected from CdSe, CdTe, ZnS, ZnSe, ZnTe, HgS, HgSe, HgTe, MgSe, MgS, and a combination thereof, or a ternary compound selected from CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS, and a combination thereof, or wherein the Group III-V compound comprises a binary compound selected from GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and a combination thereof, or a ternary compound selected from GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InZnP, InNAs, InNSb, InPAs, InPSb, and a combination thereof. |
