N‐Heterocyclic Carbene Complexes of Iron as Photosensitizers for Light‐Induced Water Reduction. Issue 11 (21st March 2017)

• Record Type: Journal Article
• Authors: Zimmer, Peter; Müller, Patrick; Burkhardt, Lukas; Schepper, Rahel; Neuba, Adam; Steube, Jakob; Dietrich, Fabian; Flörke, Ulrich; Mangold, Stefan; Gerhards, Markus; Bauer, Matthias
• Is Part Of: European journal of inorganic chemistry. Issue 11(2017)
• Page Start: 1504
• Page End: 1509
• Publication Date: 2017-03-21
• Subjects: Iron -- Reduction -- Hydrogen -- Photocatalysis -- Photosensitizers; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201700064
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract : For the first time, the potential of noble‐metal‐free iron‐based photosensitizers for photocatalytic water reduction by using homo‐ and heteroleptic carbene complexes was proven. The development of a facile synthesis route for such carbene complexes was delineated. The complexes were investigated by UV/Vis and fluorescence spectroscopy, DFT calculations, cyclic voltammetry, and X‐ray absorption spectroscopy. Their catalytic performance was compared to that of established noble‐metal‐containing photosensitizers such as [Ir(ppy)2 (bpy)][PF6 ] (Hppy = 2‐phenylpyridine, bpy = 2, 2′‐bipyridine). Abstract : The two‐step synthesis of heteroleptic N‐heterocyclic carbene based iron photosensitizers (PSs) is described. These iron PSs are applied under photocatalytic water reduction conditions with Et3 N as a sacrificial reductant (SR) and Pt nanoparticles as a water reduction catalyst (WRC). The results obtained prove the high potential of such complexes to make water reduction a bit "greener".