东华大学Tao Yi课题组取得一项新突破。他们报道了人工聚光金属环系统，实现有序能量转移，可用于光化学催化。 2021年1月15日出版的《美国化学会杂志》发表了这项成果。

研究人员表示，具有有序能量转移过程的高效聚光系统对于光合作用使用太阳能具有重要意义。

研究团队报告了一个四边形铂(II)金属环，含有四苯基乙烯（M1）作为聚光平台。由于聚集诱导发光（AIE）效应，M1集合可作为一个理想的供体，实现从M1集合到伊红-Y（ESY）再到罗丹明（SR101）高效的两步有序能量转移。在该过程中，ESY用作中继模式中的桥梁。

为更好地模仿自然光合作用，该M1-ESY-SR101系统作为光化学催化剂，用于水溶液中C-H键的烷基化，显示出相比M1-ESY或者ESY/SR101系统更好的催化活性。

附：英文原文

Title: Artificial Light-Harvesting Metallacycle System with Sequential Energy Transfer for Photochemical Catalysis

Author: Dengqing Zhang, Wei Yu, Suwan Li, Yan Xia, Xianying Li, Yiran Li, Tao Yi

Issue&Volume: January 15, 2021

Abstract: 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 (M1) as a light-harvesting platform. The M1 assembly serves as an ideal donor because of the aggregation-induced emission (AIE) effect, realizing two-step sequential energy transfer from the M1 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 M1–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 M1–ESY system or ESY/SR101 alone.

DOI: 10.1021/jacs.0c12522

Source: https://pubs.acs.org/doi/10.1021/jacs.0c12522