Families of chlorins, families of purpurins and metal complexes thereof are disclosed. The purpurins and their metal complexes have the structures of FIGS. 1, 7, 14-18, 29-38, 44-48 and 54-58 of the attached drawings. The chlorins and their metal complexes have the formulas of FIGS. 2, 8, 19, 20, 22,...http://www.google.se/patents/US5216012?utm_source=gb-gplus-sharePatent US5216012 - Production and use of purpurins, chlorins and purpurin- and chlorin-containing compositions
