High turnover photocatalytic hydrogen formation with an Fe(iii) N-heterocyclic carbene photosensitiser. Issue 35 (4th April 2022)

• Record Type: Journal Article
• Authors: Schwarz, Jesper; Ilic, Aleksandra; Johnson, Catherine; Lomoth, Reiner; Wärnmark, Kenneth
• Is Part Of: Chemical communications. Volume 58:Issue 35(2022)
• Page Start: 5351
• Page End: 5354
• Publication Date: 2022-04-04
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d2cc01016j
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : The first high turnover photocatalytic hydrogen formation reaction using an earth-abundant iron photosensitiser is presented. Abstract : Herein we report the first high turnover photocatalytic hydrogen formation reaction based on an earth-abundant Fe III -NHC photosensitiser. The reaction occurs via reductive quenching of the 2 LMCT excited state that can be directly excited with green light and employs either Pt-colloids or [Co(dmgH)2 pyCl] as proton reduction catalysts and [HNEt3 ][BF4 ] and triethanolamine/triethylamine as proton and electron donors. The outstanding photostability of the Fe III -NHC complex enables turnover numbers >1000 without degradation.