Highly Efficient Photocatalytic Water Reduction with Robust Iridium(III) Photosensitizers Containing Arylsilyl Substituents
作者:Dong Ryeol Whang、Ken Sakai、Soo Young Park
DOI:10.1002/anie.201305684
日期:2013.10.25
Waterproof complexes: Cationic IrIII photosensitizers (PSs) with an ancillary 4,4′‐bis(4‐(triphenylsilyl)phenyl)‐2,2′‐bipyridine ligand enabled hydrogen evolution from water with high turnover numbers (TONs; see scheme). The peripheral triphenylsilyl moieties prevent ligand substitution by solvent molecules, such as water, and thus increase the durability of the complexes. SR=sacrificial reducing agent
防水配合物:带有辅助4,4'-双(4-(三苯基硅烷基)苯基)-2,2'-联吡啶配体的阳离子Ir III光敏剂(PSs)能够从具有高周转率的水中析出氢(TONs;参见方案) 。外围的三苯基甲硅烷基部分可防止配体被溶剂分子(例如水)取代,从而提高了配合物的耐久性。SR =牺牲还原剂,WRC =减水催化剂。