J. Hirota et al., PREPARATION AND CHARACTERIZATION OF BISVIOLOGEN-LINKED PORPHYRIN AND BISVIOLOGEN-LINKED ZINC PORPHYRIN, Journal of photochemistry and photobiology. A, Chemistry, 77(1), 1994, pp. 29-35
Bisviologen-linked porphyrin (p-PC4VAC4VB) and bisviologen-linked zinc
porphyrin (p-ZnPC4VAC4VB) were synthesized. In these compounds two vi
ologens are connected with the porphyrin via a methylene chain (-(CH2)
4-), so as to produce a gradient of redox potential in the molecule. T
he photochemical properties of these porphyrins were investigated.