Supramolecular System of meso-Terakis (4-methoxyl-3-sulfonatophenyl) porphyrin with Cyclodextrins by Three Different Methods

The supramolecular systems of water-soluble porphyrin meso-terakis (4-methoxyl-3-sulfonatophenyl) porphyrin (T(4-Mop)PS4) with five cyclodextrins (CDs), including α, β, γ-cyclodextrin(α-CD, β-CD, γ-CD), Hydroxylpropyl-β-CD (HP-β-CD) and Sulfurbutylether-β-CD(SBE-β-CD), have been studied by Polargraphy, UV-Vis Spectrum, and Fluorescence spectra. The results showed that T(4-Mop)PS4 can interact with the five CDs and form 1:1 supramolecular systems. The inclusion constants of the corresponding supramolecular systems were determined by Polargraphy, UV-Vis Spectrum, and Fluorescence spectra, respectively. Furthermore, the inclusion ability of different kinds of CDs with T(4-Mop)PS4 was compared, which provided certain elemental data for the application of porphyrins and CDs.