Copper(II)–Silver(I) Macrocyclic Metal–Organic Framework: A Highly Efficient Reusable Triplet Oxygen Collector and Singlet Oxygen Generator

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• 作者：Jian-Cheng Wang ; Jing Yang ; Shen-Qing Wang ; Jian-Ping Ma ; Yu-Bin Dong
• 刊名：Inorganic Chemistry
• 出版年：2017
• 出版时间：February 6, 2017
• 年：2017
• 卷：56
• 期：3
• 页码：1049-1052
• 全文大小：286K
• ISSN：1520-510X

文摘

The generation of highly reactive oxygen (¹O₂) is very significant for a variety of applications such as degradation, bleaching, chemical synthesis, photodynamic therapy for tumor treatment, and others. Herein, we report a novel peroxide-dianion-embedded bimetallic macrocycle, [O₂^2–@Ag₄Cu₄L₄]²⁺ (2), that can completely release the inserted peroxide dianion as the singlet oxygen (¹O₂) via a H⁺-assisted disproportionation process in methanol. Notably, the resulting empty Ag₄Cu₄L₄(ClO₄)₄ (3) is able to trap oxygen (³O₂) from air and fixes it in the macrocycle host as a peroxide dianion; furthermore, it releases it as ¹O₂ again in the presence of H⁺. So, the bimetallic macrocycle [Ag₄Cu₄L₄]⁴⁺ herein behaves as a highly efficient reusable triplet oxygen receptor and singlet oxygen generator.