Porphyrin
CAS number: 101-60-0
Porphyrin is a group of organic heterocyclic compounds that are comprised of four modified pyrrole subunits connected via methine bridges and form an aromatic macrocyclic structure, which has one or more side chains attached. Many porphyrins are naturally occurring pigments. Porphyrins with metal ions bound to the porphin ring can be cofactors for biological processes, such as oxygen transport by hemes and photosynthesis by chlorophyll.
Related images
Synthetic strategy to prepare flavonoid–porphyrin conjugates at β-position.
Synthetic strategy to prepare flavonoid–porphyrin conjugates at meso-position.
Representative normalized absorption (solid) and fluorescence spectra (dotted) (kexc = 550 nm, OD = 0.02) of flavonoid–porphyrin conjugate 17 in DMF.
Plot of the singlet oxygen quantum yield (Ø△) of the flavonoid–porphyrin conjugates versus their fluorescence quantum yield (Øfl) in DMF. The interception of the dotted lines represents the value of the standard (TPP).
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