Encapsulation of Gold Nanorods with Porphyrins for the Potential Treatment of Cancer and Bacterial Diseases: A Critical Review

Figure 16

(d) The tetrapyrole derivative porphynogen, a synthetic precursor of the porphyrin ligand. (a) Porphyrin. (b) Chlorin. (c) Bacteriochlorin. (d) Porphyrinogen. (e) Corrin.