Schwarz Jesper, Ilic Aleksandra, Johnson Catherine, Lomoth Reiner, Wärnmark Kenneth
Centre for Analysis and Synthesis (CAS), Department of Chemistry, Lund University, SE-22100 Lund, Sweden.
Department of Chemistry-Ångström Laboratory, Uppsala University, SE-75120 Uppsala, Sweden.
Chem Commun (Camb). 2022 Apr 28;58(35):5351-5354. doi: 10.1039/d2cc01016j.
Herein we report the first high turnover photocatalytic hydrogen formation reaction based on an earth-abundant Fe-NHC photosensitiser. The reaction occurs reductive quenching of the LMCT excited state that can be directly excited with green light and employs either Pt-colloids or [Co(dmgH)pyCl] as proton reduction catalysts and [HNEt][BF] and triethanolamine/triethylamine as proton and electron donors. The outstanding photostability of the Fe-NHC complex enables turnover numbers >1000 without degradation.
在此，我们报道了首例基于储量丰富的铁-氮杂环卡宾光敏剂的高周转数光催化析氢反应。该反应通过可被绿光直接激发的配体到金属电荷转移（LMCT）激发态的还原猝灭发生，采用铂胶体或[Co(dmgH)pyCl]作为质子还原催化剂，[HNEt][BF]以及三乙醇胺/三乙胺作为质子和电子供体。铁-氮杂环卡宾配合物出色的光稳定性使得周转数大于1000且无降解。
