The invention relates to a polymer compound comprising a constitutional unit of the formula (1), and a repeating unit of any of the formulae (2) to (4): (wherein, x3, y1, y2, z1 to z3 are 0 or 1. y3 represents an integer of 0 to 2. u represents an integer of 0 to 8. Z represents a pyrene residue, Ar 1 represents an arylene group or di-valent heterocyclic group, and Ar 2 represents an aryl group or mono-valent heterocyclic group.) Ar 3 - (2) Ar 7 -X 1 (4).