Selective visible-light-driven O₂ reduction to H₂O₂ was realized using BODIPY photosensitizers (PS) in the presence of ferrocene (Fc) as the reductant and acetic acid as the proton source. Mechanistic studies suggested that O₂ could be activated by ³PS* through an energy transfer pathway to give singlet oxygen (¹O₂) in the absence of Fc. However, with Fc, ³PS* was first reductively quenched to PS˙⁻, which was able to reduce O₂ to the superoxide radical form in a subsequent electron transfer step.

中文翻译：

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使用BODIPY光敏剂将可见光驱动的氧气选择性还原为过氧化氢

在二茂铁（Fc）作为还原剂和乙酸作为质子源的情况下，使用BODIPY光敏剂（PS）实现了选择性可见光驱动的O ₂还原为H ₂ O ₂。机理研究表明，在不存在Fc的情况下，O ₂可以通过能量传递途径被³ PS *激活，从而产生单线态氧（¹ O ₂）。然而，随着FC，³ PS *首先还原猝灭到PS ^- ，这是能够减少Ò ₂到超氧自由基形式在随后的电子转移步骤。