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Photocatalytic H2 production by dirhodium(II,II) photosensitizers with red light

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Abstract

Photocatalytic proton reduction to generate H2 was achieved with the photosensitizers Rh2(DTolF)2(npCOO)2 (DTolF = p-ditolylformamidinate; npCOO = 2-carboxylate-1,8-naphthyridine; 1) and [Rh2(DTolF)2(qnnp)2][BF4]2 (qnnp = 2-(quinolin-2-yl)-1,8-naphthyridine; 2) using a relay system containing the sacrificial donor BNAH (1-benzyl-1,4-dihydronicotinamide), electron acceptor MV2+ (methylviologen), and Pt nanoparticles as the catalyst with 655 nm irradiation. Comparison of the H2 evolution under similar experimental conditions show comparable activity of the Rh2(II,II) complexes (λirr = 655 nm) to that of the prototypical [Ru(bpy)3]2+ (bpy = 2,2′-bipyridine; 3) with λirr = 447 nm. This work demonstrates the ability of the new panchromatic Rh2(II,II) complexes to achieve photocatalysis with red light.

Graphical abstract: Photocatalytic H2 production by dirhodium(ii,ii) photosensitizers with red light

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Publication details

The article was received on 05 May 2018, accepted on 26 Jun 2018 and first published on 10 Jul 2018


Article type: Communication
DOI: 10.1039/C8CC03631D
Citation: Chem. Commun., 2018, Advance Article
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    Photocatalytic H2 production by dirhodium(II,II) photosensitizers with red light

    H. J. Sayre, A. Millet, K. R. Dunbar and C. Turro, Chem. Commun., 2018, Advance Article , DOI: 10.1039/C8CC03631D

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