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

A polymer comprising:

• a first structural unit represented by Chemical Formula 1 and a second structural unit represented by Chemical Formula 2,
• wherein, in Chemical Formula 1,
• R11 and R12 are each independently hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C30 alkoxy group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, —CORa, —OC(═O)Rb, —C(═O)ORc, —OC(═O)ORd, a halogen, a cyano group, or any combination thereof, wherein Ra to Rd are each independently hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C30 alkoxy group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, a halogen, a cyano group, or any combination thereof,
• L1 and L2 are each independently a single bond, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted divalent C3 to C30 heterocyclic group, a fused ring thereof, or any combination thereof,
• D1 is a substituted or unsubstituted C6 to C30 arylene group;
• a substituted or unsubstituted divalent C3 to C30 heterocyclic group including at least one of N, O, S, Se, Te, and Si;
• a fused ring thereof;
• or any combination thereof,
• wherein, in Chemical Formula 2,
• R11 and R12 are each independently hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C30 alkoxy group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, —CORa, —OC(═O)Rb, —C(═O)ORb, —OC(═O)ORd, a halogen, a cyano group, or any combination thereof, wherein Ra to Rd are each independently hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C30 alkoxy group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, a halogen, a cyano group, or any combination thereof,
• L1 and L2 are each independently a single bond, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted divalent C3 to C30 heterocyclic group, a fused ring thereof, or any combination thereof,
• c is 0 or 1,
• Y is O, C(═O), —OC(═O), —C(═O)O, or —OC(═O)O, R21 is a substituted or unsubstituted C1 to C30 linear or branched alkyl group, a C3 to C30 linear or branched alkyl group in which at least one of non-adjacent methylene groups is replaced by oxygen (O), a substituted or unsubstituted C3 to C30 cycloalkyl group, or a substituted or unsubstituted C3 to C30 heterocycloalkyl group,
• R22 is a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C7 to C30 aralkyl group, a substituted or unsubstituted C2 to C30 heteroaryl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, or a substituted or unsubstituted C3 to C30 heterocycloalkyl group,
• R23 and R24 are each independently hydrogen, a substituted or unsubstituted
• C1 to C30 linear or branched alkyl group, a substituted or unsubstituted C1 to C30 linear or branched alkoxy group, —CORa, —OC(═O)Rb, —C(═O)ORc, —OC(═O)ORd, a halogen, or a cyano group, wherein R a to R d are each independently hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C30 alkoxy group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, a halogen, or a cyano group, and X2 and X3 are each independently O, S, Se or Te.