Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 8, Issue 41, Pages 15405-15429Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.0c05179
Keywords
Semiconductors; Organic Dyes; Organometallic Dyes; LMCT Sensitizers; Photocatalysis; Heterogeneous Catalysis; Visible Light; Organic Synthesis; Green Chemistry
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The industrial transition to more-sustainable chemical manufacturing requires the development of a variety of high-performance heterogeneous catalysts. Recently, new classes of heterogeneous and recyclable catalysts that exploit visible-light activation have emerged in the field of organic synthesis. Among these systems, sensitized semiconductors occupy a strategic place as they are able to initiate single electron transfer processes under heterogeneous conditions and using medium-to-low energy light activation. This technology can promote a range of synthetically useful reactions, such as oxidations, reductions, or additions, including C-C bond formation, under very mild conditions and with high selectivity. Sensitized semiconductors have been known for decades in solar cell technologies (the so-called Dye-Sensitized Solar Cells) but applications in organic synthesis are only very recent. This Review provides a comprehensive overview of the mechanisms, reactivity, and scope of this technology, with a focus on their new and promising synthetic applications.
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