Singlet Oxygen-Photooxygenation of Organic Compounds

Dear Colleagues,

During the past decade, the field of photochemistry has been experiencing an unexpected upswing with respect to synthetic applications and mechanistic insights. This is mainly due to new catalysts that have been developed for energy and electron transfer steps to sophisticated spectroscopic techniques and increasingly improved computational methods.

Among the many different photochemical synthetic methods, photooxygenation with singlet oxygen occupies a superior position. Singlet oxygen is a remarkable electronically excited state: remarkably easy to generate, remarkably long-lived, and remarkably reactive—all in contrast to its triplet ground state. Thus, singlet oxygen is an inevitable part of biological processes where light, dye molecules, and cellular structures meet. Nature has developed a whole fire brigade to fight against oxidative stress, and singlet oxygen is a molecule that is also in its focus. Beside these biological aspects, the synthetic applicability of singlet oxygen is also appealing. Nearly all documented singlet oxygen reactions are defined pericyclic reactions without radical chain oxidation contribution. Thus, defined target molecules can be generated by singlet oxygenations and, on the other hand, singlet oxygen reactions can be exceedingly well investigated by spectroscopic methods or by oxygen consumption analyses. This Special Issue on “Singlet Oxygen-Photooxygenation of Organic compounds” aims to collect submissions on new singlet oxygen reactions, new products from singlet photooxygenations, and new mechanistic insights into singlet oxygen chemistry.

Guest Editor

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• oxygenation
• photochemistry
• sensitization
• photocatalysis
• singlet oxygen
• natural antioxidants
• peroxides

• Singlet Oxygen-Photooxygenation of Organic Compounds in Molecules (5 articles)