A Bisamide Ruthenium Polypyridyl Complex as a Robust and Efficient Photosensitizer for Hydrogen Production. Issue 22 (16th October 2017)

• Record Type: Journal Article
• Authors: Schott, Olivier; Pal, Amlan K.; Chartrand, Daniel; Hanan, Garry S.
• Is Part Of: ChemSusChem. Volume 10:Issue 22(2017)
• Page Start: 4436
• Page End: 4441
• Publication Date: 2017-10-16
• Subjects: hydrogen evolution -- photocatalysis -- solar fuel generation -- supramolecular -- transition metals; Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201701543
• Languages: English
• ISSNs: 1864-5631

Abstract

Abstract: A photosensitizer based on a ruthenium complex of a bisamide‐polypyridyl ligand gives rise to a large improvement in photocatalytic stability, rate of activity, and efficiency in photocatalytic H2 production compared to [Ru(bpy)3 ] 2+ (bpy=2, 2′‐bpyridine). The bisamide ruthenium polypyridyl complex combined with a cobaltoxime‐based photocatalyst was found to be highly efficient under blue‐light (turnover number (TON)=7800) and green‐light irradiation (TON=7200) whereas [Ru(bpy)3 ] 2+ was significantly less effective with a TON of 2600 and 1100, respectively. The greatest improvement was under red‐light‐emitting diodes, with bisamide ruthenium polypyridyl complex and cobaltoxime exhibiting a TON of 4200 compared to [Ru(bpy)3 ] 2+ and cobaltoxime at a TON of only 71. Abstract : Fast and stable : A heteroleptic bisamide Ru photocatalyst based on [Co(dmgH)2 (DMAP)Cl] (dmgH=dimethylglyoxime, DMAP=4‐dimethylaminopyridine) is studied and compared to [Ru(bpy)3 ] 2+ (bpy=2, 2′‐bpyridine) for light‐driven hydrogen evolution under blue, green, and red light‐emitting diodes. Herein, we describe the most productive system to date under red‐light irradiation.