A polymer material comprising a structural unit represented by Chemical Formula 1: Chemical Formula 1 -⁅X-Y⁆- wherein, in Chemical Formula 1, each X is the same or different, and is represented by Chemical Formula 2, and each Y is the same or different, and is a substituted or unsubstituted C6 to C60 divalent aromatic cyclic group, a substituted or unsubstituted C6 to C60 divalent alicyclic cyclic group, a substituted or unsubstituted C3 to C60 divalent aromatic heterocyclic group, or a substituted or unsubstituted C3 to C60 divalent alicyclic heterocyclic group, wherein, in Chemical Formula 2, Ar 1 is a substituted or unsubstituted C6 to C60 trivalent aromatic cyclic group, or a substituted or unsubstituted C3 to C60 trivalent aromatic heterocyclic group, Ar 2 and Ar 3 are each independently a substituted or unsubstituted C6 to C60 monovalent aromatic cyclic group, or a substituted or unsubstituted C3 to C60 monovalent aromatic heterocyclic group, L 1 and L 2 are each independently a single bond, a substituted or unsubstituted C6 to C60 divalent aromatic cyclic group, or a substituted or unsubstituted C3 to C60 divalent aromatic heterocyclic group, each R 1 and R 2 are the same or different, and are each independently a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C6 to C60 monovalent aromatic cyclic group, or a substituted or unsubstituted C3 to C60 monovalent aromatic heterocyclic group, or R 1 and R 2 are combined with each other to form one ring that is a pentagonal ring, a hexagonal ring, or a fused ring, a is an integer ranging from 0 to 4, b is an integer ranging from 0 to 3, and Z 1 to Z 8 are each independently a nitrogen atom or -CH=. each X is the same or different, and is represented by Chemical Formula 2, and each Y is the same or different, and is a substituted or unsubstituted C6 to C60 divalent aromatic cyclic group, a substituted or unsubstituted C6 to C60 divalent alicyclic cyclic group, a substituted or unsubstituted C3 to C60 divalent aromatic heterocyclic group, or a substituted or unsubstituted C3 to C60 divalent alicyclic heterocyclic group, Ar 1 is a substituted or unsubstituted C6 to C60 trivalent aromatic cyclic group, or a substituted or unsubstituted C3 to C60 trivalent aromatic heterocyclic group, Ar 2 and Ar 3 are each independently a substituted or unsubstituted C6 to C60 monovalent aromatic cyclic group, or a substituted or unsubstituted C3 to C60 monovalent aromatic heterocyclic group, L 1 and L 2 are each independently a single bond, a substituted or unsubstituted C6 to C60 divalent aromatic cyclic group, or a substituted or unsubstituted C3 to C60 divalent aromatic heterocyclic group, each R 1 and R 2 are the same or different, and are each independently a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C6 to C60 monovalent aromatic cyclic group, or a substituted or unsubstituted C3 to C60 monovalent aromatic heterocyclic group, or R 1 and R 2 are combined with each other to form one ring that is a pentagonal ring, a hexagonal ring, or a fused ring, a is an integer ranging from 0 to 4, b is an integer ranging from 0 to 3, and Z 1 to Z 8 are each independently a nitrogen atom or -CH=.