Enzymatic poly(gallic acid): A stable multiradical polyanion

In this work we re-examined the molecular structure of enzymatic poly(gallic acid) (PGAL), for which we identified a multiradical and polyanionic nature, in contrast to a previous assignment where it was mistakenly assumed as a neutral and diamagnetic molecule. Here, we present a profound investigation of its ground-state structure by the use of both experimental and theoretical methods, featuring ESR measurements and quantum chemical...