Lee Sze Koon, Kondo Mio, Okamura Masaya, Enomoto Takafumi, Nakamura Go, Masaoka Shigeyuki
Department of Life and Coordination-Complex Molecular Science , Institute for Molecular Science (IMS) , 5-1 Higashiyama, Myodaiji , Okazaki , Aichi 444-8787 , Japan.
Department of Structural Molecular Science , SOKENDAI (The Graduate University for Advanced Studies) , Shonan Village , Hayama , Kanagawa 240-0193 , Japan.
J Am Chem Soc. 2018 Dec 12;140(49):16899-16903. doi: 10.1021/jacs.8b09933. Epub 2018 Nov 28.
Visible-light-driven catalytic reduction of CO is at the heart of artificial photosynthesis. Here, we demonstrate the first example of a Ru complex that can function both as a photosensitizer and catalyst for CO reduction. The catalyst exhibited excellent activity for CO evolution with a high turnover number (TON, 353 for 24 h), reaction rate (TOF, 14.7 h), and product selectivity (97%) under visible-light irradiation. We also succeeded in selective product formation (CO or HCOOH) by changing the basicity of the reaction media. This finding will open new avenues for visible-light-driven photoredox catalysis using Ru-based function-integrated photocatalysts.
