Polymer, quantum dot composition and light-emitting device employing the same

A quantum dot composition, comprising:

• 25-80 parts by weight of a quantum dot material;
• 15-70 parts by weight of a polymer, wherein the polymer has a first repeating unit, wherein the first repeating unit has a structure represented by Formula (I):
• wherein A1 and A3 are hydrogen A2 is vinyl,
• R1 and R2 are independently hydrogen, halogen, or C1-2 alkyl group;
• R3 is hydrogen, phenyl group, biphenyl group, or naphthyl group;
• Z1 is
• R4, R5, R11, R12, R16, R17, R22, R23 and R24 are independently hydrogen, halogen, or C1-2 alkyl group;
• R6, R7 and R8 are independently hydrogen
• C3-10 alkyl group, or C2-10 alkenyl group, and at least one of R6, R7 and R8 is C2-10 alkenyl group or
• R9 and R10 are independently C2-10 alkenyl group;
• R13 is independently hydrogen, C3-10 alkyl group, or C2-10 alkenyl group, and at least one of R13 is C2-10 alkenyl group;
• R14 and R15 are independently hydrogen, C3-10 alkyl group, or C2-10 alkenyl group, and at least one of R14 and R15 is C2-10 alkenyl group;
• R18, R19, R20 and R21 are independently hydrogen, C3-10 alkyl group, or C2-10 alkenyl group, and at least one of R18, R19, R20 and R21 is C2-10 alkenyl group;
• and R25 is independently hydrogen, C3-10 alkyl group, or C2-10 alkenyl group, and at least one of R25 is C2-10 alkenyl group;
• and
• 2-20 parts by weight of a crosslinked-monomer, wherein the monomer has at least one C2-8 alkenyl group, at least one acrylate group, or at least one methacrylate group.