Photoresponsive Porphyrin Nanotubes of -tetra(4-Sulfonatophenyl)Porphyrin and Sn(IV) -tetra(4-pyridyl)porphyrin.

Porphyrin macrocycles and their supramolecular nanoassemblies are being widely explored in energy harvesting, sensor development, catalysis, and medicine because of a good tunability of their light-induced charge separation and electron/energy transfer properties. In the present work, we prepared and studied photoresponsive porphyrin nanotubes formed by the self-assembly of -tetrakis(4-sulfonatophenyl)porphyrin and Sn(IV) -tetra(4-pyridyl)porphyrin. Scanning electron microscopy and transmission electron microscopy showed that these tubular nanostructures were hollow with open ends and their length was 0.