Synthesis, Characterisation and Application of Iridium(III) Photosensitisers for Catalytic Water Reduction
作者:Felix Gärtner、Daniela Cozzula、Sebastian Losse、Albert Boddien、Gopinatan Anilkumar、Henrik Junge、Thomas Schulz、Nicolas Marquet、Anke Spannenberg、Serafino Gladiali、Matthias Beller
DOI:10.1002/chem.201100235
日期:2011.6.14
presence of [HNEt3][HFe3(CO)11] as a water‐reduction catalyst (WRC) and triethylamine as a sacrificial reductant (SR), seven of the new iridium complexes showed activity. [Ir(6‐iPr‐bpy)(ppy)2]PF6 (bpy: 2,2′‐bipyridine, ppy: 2‐phenylpyridine) turned out to be the most efficient photosensitiser. This complex was also tested in combination with other WRCs based on rhodium, platinum, cobalt and manganese. In
通式为[Ir III(C ^ N)2(N ^ N)] +(C ^ N:环金属化苯基吡啶配体,N ^ N:中性的新型单阳离子铱(III)光敏剂(Ir-PSs)的合成描述了二齿配体。通过循环伏安法,UV / Vis和光致发光光谱法和X射线分析检查获得的结构。测试了所有铱配合物作为光敏剂的能力,以促进从水中均匀催化的氢气生成。在[HNEt 3 ] [HFe 3(CO)11 ]作为减水催化剂(WRC)和三乙胺作为牺牲性还原剂(SR)的存在下,七个新的铱络合物表现出活性。[Ir(6‐ iPr-bpy)(ppy)2 ] PF 6(bpy:2,2'-联吡啶,ppy:2-苯基吡啶)被证明是最有效的光敏剂。还对该复合物与其他基于铑,铂,钴和锰的WRC进行了测试。在所有情况下,都会发生大量的氢气逸出。从[HNEt 3 ] [HFe 3(CO)11 ]和三[3,5-双(三氟甲基)苯基]膦现场生成的Ir-PS的最大周转数为4550,Fe