Visible light induced catalytic water reduction without an electron relay.
Visible light induced catalytic water reduction without an electron relay.
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DOI：
10.1002/chem.200700480
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发表时间：
2007-10
期刊：
影响因子：
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通讯作者：
Leonard L. Tinker;Neal D. McDaniel;Peter N Curtin;Courtney K Smith;M. Ireland;S. Bernhard
中科院分区：
文献类型：
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作者：
Leonard L. Tinker;Neal D. McDaniel;Peter N Curtin;Courtney K Smith;M. Ireland;S. Bernhard
水的质子被由混配铱（III）光敏剂[Ir（ppy）2（bpy）]+、铂催化剂和牺牲还原剂组成的催化体系还原。氢量子产率在本研究中达到0.26，这是通过三乙醇胺对激发态光敏剂的还原猝灭而进行的。这种简化的方法允许表征在更复杂的系统中被掩盖的降解产物。一种新型的16孔装置，用于并行动力学分析的H2演变，使高通量筛选的反应条件和量化的衰减反应速率。DFT计算合理化这和以前的研究三-二亚胺钌（II）光敏剂之间的差异。
Protons from water are reduced by a catalytic system composed of a heteroleptic iridium(III) photosensitizer [Ir(ppy)2(bpy)]+, platinum catalyst, and sacrificial reductant. The hydrogen quantum yield reaches 0.26 in this study, which proceeds via reductive quenching of the excited photosensitizer by triethanolamine. This simplified approach allows the characterization of degradation products that are otherwise obscured in more complex systems. A novel 16-well setup for parallel kinetic analysis of H2 evolution enables high-throughput screening of reaction conditions and quantization of the decaying reaction rate. DFT calculations rationalize the differences between this and previous studies on tris-diimine ruthenium(II) photosensitizers.