Photocatalytic Properties and Mechanistic Insights into Visible Light‐Promoted Aerobic Oxidation of Sulfides to Sulfoxides via Tin Porphyrin‐Based Porous Aromatic Frameworks,Advanced Synthesis & Catalysis

当前位置： X-MOL 学术 › Adv. Synth. Catal. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Photocatalytic Properties and Mechanistic Insights into Visible Light‐Promoted Aerobic Oxidation of Sulfides to Sulfoxides via Tin Porphyrin‐Based Porous Aromatic Frameworks
Advanced Synthesis & Catalysis ( IF 4.4 ) Pub Date : 2018-10-07 , DOI: 10.1002/adsc.201800730
Jun Jiang ₁ , Rongchang Luo ₂ , Xiantai Zhou ₃ , Yaju Chen ₁ , Hongbing Ji ₁

Affiliation

Using concepts of biomimetic catalysis, a kind of tin porphyrin‐based porous aromatic framework (SnPor@ PAF) with broad and strong optical absorption in the visible light region was successfully synthesized and subsequently used in the aerobic oxidation of sulfides to sulfoxides under ambient conditions and visible light irradiation, in which exhibited enzyme‐like features of high efficiency and high selectivity. More interestingly, heterogeneous SnPor@PAF was naturally regarded as an intriguing and versatile photosensitizer for photocatalytic transformation and could be reused several times because of its robust and rigid porphyrin framework. As expected, their π‐conjugated structure characteristic in the molecular skeleton might facilitate the activation of molecular oxygen under mild reaction conditions and promoted the production of reactive oxygen species (singlet oxygen (¹O₂) and superoxide radical anion (O₂^.−)), which would involve energy transfer and/or electron transfer process. Experimental investigations including emission quenching experiment, oxygen‐isotope labelling, typical inhibition experiments, classical fluorescence probe study, photo‐oxidation of α‐terpinene and in situ electron spin resonance, could provide a mechanistic insight into the photocatalytic reactions.

中文翻译：

通过锡卟啉基多孔芳族骨架对可见光促进硫化物的可见光促进的好氧氧化为亚砜的光催化性质和机理的见解

利用仿生催化的概念，成功合成了一种基于卟啉锡的多孔芳香族骨架（SnPor @ PAF），该骨架在可见光区域具有广泛而强烈的光吸收，随后用于在环境条件下将硫化物好氧氧化为亚砜。可见光照射，其中表现出高效率和高选择性的类酶特征。更有趣的是，异构SnPor @ PAF天然被认为是用于光催化转化的一种引人入胜的，用途广泛的光敏剂，由于其坚固而坚固的卟啉骨架，可以重复使用多次。如预期的那样，它们在分子骨架中的π共轭结构特性可能会在温和的反应条件下促进分子氧的活化，并促进活性氧物质（单氧（¹ O ₂）和超氧自由基阴离子（O ₂^.-）的产生），这将涉及能量转移和/或电子转移过程。实验研究包括发射猝灭实验，氧同位素标记，典型抑制实验，经典荧光探针研究，α-萜品烯和原位电子自旋共振，可以提供光催化反应的机械见解。

更新日期：2018-10-07

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11