The interaction of methyl viologen with anionic polyelectrolytes: A study by a fluorescence quenching method

The interactions between methyl viologen (MV2+) and sodium poly(styrene sulfonate) (PSS) and sodium poly(vinyl sulfonate) (PVS) were studied by means of the fluorescence quenching of a probe molecule (1-naphthylamine) not bound to the polymer. The results can be interpreted in terms of atmospheric binding of MV2+ to PVS and PSS. In the latter case, there is also some specific binding, manifested by a change in the absorption spectrum of MV2+.