Quantum Yields of Singlet-Oxygen Production by Some Natural Quinoid Fungal Metabolites and Derivatives |
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| Authors: | Taraneh Aminian-Saghafi,Gianluca Nasini,Tullio Caronna,Andr M. Braun,Esther Oliveros |
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| Affiliation: | Taraneh Aminian-Saghafi,Gianluca Nasini,Tullio Caronna,André M. Braun,Esther Oliveros |
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| Abstract: | Perylene quinone compounds of natural and syntheitc origin have been investigated for their quantum efficiency of singlet-oxygen production (ΦΔ). The results may be interpreted by a qualitative relation between ΦΔ and the planarity of the sensitizer molecules, highest values (0.8–0.9) being observed where planarity is favoring tautomeric structures. On the other hand, derivatives exhibiting non-planar quinoid structures show lower ΦΔ, and methylated derivatives react photochemically. |
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