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Unexpected wavelength dependency of the photocatalytic CO2 reduction performance of the well-known (bpy)Re(CO)3Cl complex

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Abstract

The selective photocatalytic reduction of CO2 to CO has often been accomplished using complexes incorporating the Re(CO)3Cl fragment. We now discovered that the photocatalytic performance of the well-known parent compound (bpy)Re(CO)3Cl (bpy = 2,2′-bipyridine) surprisingly depends on the illumination wavelengths: the turnover numbers (TONs) measured using various cut-off filters showed an increased photocatalytic activity when irradiated with visible light with wavelengths longer than 450 nm – even if the compound hardly absorbs light in this wavelength region. Therefore, catalytic, spectroscopic and theoretical investigations were performed to explain this exceptional effect.

Graphical abstract: Unexpected wavelength dependency of the photocatalytic CO2 reduction performance of the well-known (bpy)Re(CO)3Cl complex

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Publication details

The article was received on 01 Nov 2018, accepted on 15 Nov 2018 and first published on 15 Nov 2018


Article type: Communication
DOI: 10.1039/C8CC08742C
Citation: Chem. Commun., 2019, Advance Article
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    Unexpected wavelength dependency of the photocatalytic CO2 reduction performance of the well-known (bpy)Re(CO)3Cl complex

    P. Lang, R. Giereth, S. Tschierlei and M. Schwalbe, Chem. Commun., 2019, Advance Article , DOI: 10.1039/C8CC08742C

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