| abstract |
A polymer, a photovoltaic cell, a composition for an organic semiconductor material, and an organic semiconductor polymer having a structural unit represented by general formula (I). In the formula, Z 1 and Z 2 each independently represent S, O, Se, or Te; R represents -SO p X, -CN, -NO 2 , -P(=O)(OR 1 )(OR 2 ), or -C(R 1 ')=C(CN) 2 ; X represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aromatic hetero ring group, or -NR 3 (R 4 ); R 1 , R 2 , R 1 ', R 3 , and R 4 each independently represent a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, or an aromatic hetero ring group; and p represents 1 or 2. R 3 and R 4 may bond with one another to form a ring. |