| abstract |
Provided is a polymer compound useful for production of a light emitting device excellent in external quantum yield. The polymer compound includes a constitutional unit represented by the formula (1): n n n n n n n n n n wherein a 1 and a 2 represent 0 or 1, Ar A1 and Ar A3 represent an arylene group or the like, and in each of Ar A1 and Ar A3 at least one atom adjacent to an atom forming a bond to the constitutional unit adjacent to the each of Ar A1 and Ar A3 has an alkyl group or the like as a substituent, Ar A2 represents a phenylene group, Ar A4 represents an arylene group or the like, R A1 , R A2 and R A3 represent an aryl group or the like, and when a 2 is 0, R A1 represents an aryl group in which two or more rings are condensed (the number of carbon atoms constituting the rings of the aryl group is 10 or more) or the like. |