用于光化学催化的具有顺序能量转移的人工光收集金属环系统。
Artificial Light-Harvesting Metallacycle System with Sequential Energy Transfer for Photochemical Catalysis.
机构信息
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China.
School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
出版信息
J Am Chem Soc. 2021 Jan 27;143(3):1313-1317. doi: 10.1021/jacs.0c12522. Epub 2021 Jan 15.
Highly efficient light-harvesting systems with the sequential energy transfer process are significant for utilizing solar energy in photosynthesis. Herein, we report a quadrilateral platinum(II) metallacycle containing tetraphenylethylene () as a light-harvesting platform. The assembly serves as an ideal donor because of the aggregation-induced emission (AIE) effect, realizing two-step sequential energy transfer from the assembly to eosin Y (ESY) and then to sulforhodamine (SR101) with high efficiency. ESY was used as a bridge in a relay mode during this process. To better mimic natural photosynthesis, the -ESY-SR101 system was utilized as photochemical catalysis for alkylation of C-H bonds in aqueous solution, showing enhanced catalytic activity as compared with the -ESY system or ESY/SR101 alone.
具有顺序能量转移过程的高效光捕获系统对于利用光合作用中的太阳能具有重要意义。在此，我们报道了一种含有四苯乙烯（）的四边形铂（II）金属环作为光捕获平台。由于聚集诱导发射（AIE）效应，该组装体可用作理想的供体，实现了从组装体到曙红 Y（ESY），然后高效地将能量再转移到磺基罗丹明（SR101）的两步顺序能量转移。在这个过程中，ESY 被用作接力模式中的桥梁。为了更好地模拟自然光合作用，-ESY-SR101 体系被用作水溶液中 C-H 键烷基化的光化学催化，与 -ESY 体系或 ESY/SR101 单独使用相比，表现出增强的催化活性。
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