Polymer, organic semiconductor material, thin film, and electronic device

A polymer, comprising:

• a structural unit represented by Chemical Formula 1;
• a structural unit represented by Chemical Formula 2;
• and
• a structural unit represented by Chemical Formula 3,
• wherein, in Chemical Formula 1,
• R1 and R2 are, each independently, a substituted or unsubstituted C1 to C40 linear alkyl group,
• L1 and L2 are, each independently, a single bond, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C20 heteroarylene group, or a combination thereof, and
• * indicates a linking portion;
• wherein, in Chemical Formula 2,
• R3 and R4 are, each independently, a substituted or unsubstituted C3 to C40 branched alkyl group,
• L3 and L4 are, each independently, a single bond, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C20 heteroarylene group, or a combination thereof, and
• * indicates a linking portion;
• wherein, in Chemical Formula 3,
• R5 and R6 are, each independently, hydrogen, deuterium, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C2 to C30 alkenyl group, a substituted or unsubstituted C2 to C30 alkynyl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C3 to C30 cycloalkenyl group, a substituted or unsubstituted C1 to C30 alkoxy group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C7 to C30 arylalkyl group, a substituted or unsubstituted C6 to C30 aryloxy group, a substituted or unsubstituted C3 to C30 heterocyclic group, a halogen, or a cyano group,
• L5 and L6 are, each independently, a single bond, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C20 heteroarylene group, or a combination thereof, and
• * indicates linking portion.