Heterogeneous porphyrin photosensitizers based on multiple acid–base interactions with amberlyst: high leaching stability under aqueous and non-aqueous conditions and acid-dependent spectral, solubility, and photocatalytic properties
Hexaprotonated meso-tetra(aryl)porphyrins (aryl = 2-pyridyl, 3-pyridyl and 4-pyridyl) anchored to nanostructured Amberlyst 15, nanoAmbSO3H or the sodium salt (NanoAmbSO3Na) with an exceptionally high stability against oxidative degradation and a singlet oxygen quantum yield (ϕΔ) of almost unity are reported as new porp...