Journal
DALTON TRANSACTIONS
Volume 48, Issue 45, Pages 16894-16898Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9dt03461g
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Funding
- Foundation Olle Engkvist Byggmastare [2016/3]
- Swedish Energy Agency [11674-8]
- NordForsk network NordCO2
- NSF Graduate Research Opportunities Worldwide (GROW) program
- NSF Graduate Research Fellowship [DGE-1650116]
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The ability of [Ru-II((t)Butpy)(dmbpy)(MeCN)](2+) (1-MeCN) to capture CO2, with the assistance of triethanolamine (TEOA), has been assessed under photocatalytically-relevant conditions. The photolability of 1-MeCN has proven essential to generate a series of intermediates which only differ by the nature of their monodentate ligand. In DMF, ligand photoexchange of 1-MeCN to give [Ru-II((t)Butpy)(dmbpy)(DMF)](2+) (1-DMF) proceeds smoothly with a quantum yield of 0.011. However, in the presence of TEOA, this process was disrupted, leading to the formation of a mixture of 1-DMF and [Ru-II((t)Butpy)(dmbpy)(TEOA)](+) (1-TEOA). An equilibrium constant of 3 was determined. Interestingly, 1-TEOA demonstrated an ability to reversibly catch and release CO2 making it a potentially crucial intermediate towards CO2 reduction.
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