期刊
SYNLETT
卷 32, 期 13, 页码 1330-1342出版社
GEORG THIEME VERLAG KG
DOI: 10.1055/a-1493-3564
关键词
uranyl salts; ligand-to-metal charge transfer; hydrogen-atom transfer; single-electron transfer; photoredox transformations
资金
- National Natural Science Foundation of China (NSFC) [21971065]
- Science and Technology Commission of Shanghai Municipality (STCSM) [20XD1421500, 20JC1416800, 18JC1415600]
- Innovative Research Team of High-Level Local Universities in Shanghai [SSMU-ZL-CX20180501]
- Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
- Fundamental Research Funds for the Central Universities
The application of uranyl salts as powerful photoredox catalysts in chemical transformations has lagged behind thermocatalysis and structural chemistry. However, recent research has demonstrated that uranyl cations are ideal photoredox catalysts in visible-light-driven reactions with their long-lived fluorescence lifetime and high oxidizing ability. The ground state and excited state of uranyl cations are inert to oxygen molecules, preventing unwanted transformations from active oxygen species.
The application of uranyl salts as powerful photoredox catalysts in chemical transformations lags behind the advances achieved in thermocatalysis and structural chemistry. In fact, uranyl cations (UO22+) have proven to be ideal photoredox catalysts in visible-light-driven chemical reactions. The excited state of uranyl cations (*UO22+) that is generated by visible-light irradiation has a long-lived fluorescence lifetime up to microseconds and high oxidizing ability [Eo = +2.6 V vs. standard hydrogen electrode (SHE)]. After ligand-to-metal charge transfer (LMCT), quenching occurs with organic substrates via hydrogen-atom transfer (HAT) or single-electron transfer (SET).broken vertical bar broken vertical bar The last two sentences have been reworded for clarity. Please check.broken vertical bar broken vertical bar Interestingly, the ground state and excited state of uranyl cations (UO22+) are chemically inert toward oxygen molecules, preventing undesired transformations from active oxygen species. This review summarizes recent advances in photoredox transformations enabled by uranyl salts.
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