R. Matsuoka et al., Enhanced aggregation of tin(IV)porphyrins in a polyfluorinated surfactant-clay hybrid environment, MOLEC CRYST, 341, 2000, pp. 1137-1142
Tetra-(4-sulfonatophenyl)porphyrinatotin(IV) aggregated efficiently in a cl
ay (saponite) layer intercalated with a polyfluorinated surfactant, but no
aggregation was observed in a hydrocarbon type surfactant-clay hybrid envir
onment. Germanium(IV) porphyrins remained as monomers even in the polyfluor
inated environment.