List of dyes used in the present work, with reference to the chemical group, Colour Index number (C.I.), electric charge (Z), source, and previously reported photoactivity (if any, and only for well known cases).

(a) The reference list for reported photoactivity is not exhaustive and only reflects a few but relevant citations on the best known photoactive dyes. Reference details are shown as supplementary information (S1 Text). (b) CuPcS2:cooper phthalocyanine disulfonic acid, di-o-tolylguanidine salt.(c) Nickel phthalocyanine tetrasulfonic acid, tetrasodium salt. (d) In these compounds, the presence of paramagnetic metals (Cu, Ni) abolishes the photodynamic activity. (e) Ruthenium(II)-tris(phenanthroline) dichloride. nd: non determined
List of dyes used in the present work, with reference to the chemical group, Colour Index number (C.I.), electric charge (Z), source, and previously reported photoactivity (if any, and only for well known cases).