A hyperbranched polymer constructed by platinum-acetylide units has been sy
nthesized by self polycondensation of a dinuclear platinum complex having o
ne terminal acetylene and two platinum-chloride groups as an AB(2) monomer
in the presence of a copper catalyst in amine. The hyperbranched polymer is
soluble in common organic solvents and characterized by means of spectral
analyses and GPC.