Provided is a method of producing a polymeric fluorescent substance wherein
one or more monomers represented by the general formula (1) are polymerized in
the presence of a zerovalent nickel complex,
wherein, Ar1 represents a divalent group selected from the group
consisting of arylene groups, divalent heterocyclic compound groups, and divalent
or trivalent hetero atom-bonded arylene or divalent heterocyclic compound groups,
and X1 and X2 represent leaving groups. By using the polymeric
fluorescent substance, a high performance polymer LED can easily be obtained.
