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首页> 外文期刊>Chemistry: A European journal >Supramolecular Photoinduced Electron Transfer between a Redox-Active Hexanuclear Metal-Organic Cylinder and an Encapsulated Ruthenium(II) Complex
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Supramolecular Photoinduced Electron Transfer between a Redox-Active Hexanuclear Metal-Organic Cylinder and an Encapsulated Ruthenium(II) Complex

机译：氧化还原活性六核金属有机圆柱体与封装的钌（II）配合物之间的超分子光诱导电子转移。

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摘要

By using redox-active nickel(II) ions as the connect nodes, a hexanuclear metal-organic cylinder (Ni-YL) was achieved through self-assembly with a large cavity and an opening windows capable to accommodate guest molecules. The suitable cavity of Ni-YL provides an opportunity to encapsulate the anionic ruthenium bipyridine derivative [Ru(dcbpy)(3)] (dcbpy=2,2-bipyridine-4,4-dicarboxylic acid) as the photosensitizer for light-driven reactions. The host-guest behavior between Ni-YL and [Ru(dcbpy)(3)] was investigated by mass spectrometry, NMR spectroscopy, and computational studies, revealing an effective binding of the guest [Ru(dcbpy)(3)] within the cavity of Ni-YL. Optical experiments suggested a pseudo-intramolecular photoinduced electron transfer (PET) process between the [Ru(dcbpy)(3)] and the host Ni-YL, leading to an efficient light-driven hydrogen production based on this system. Control experiments with a mononuclear Ni complex as a reference photocatalyst and the inactive [Fe(dcbpy)(3)] as an inhibitor for comparison were also performed to confirm such a supramolecular photocatalysis process.
机译：通过使用具有氧化还原活性的镍（II）离子作为连接节点，通过具有大空腔和能够容纳客体分子的开口窗口的自组装，获得了六核金属有机圆柱体（Ni-YL）。 Ni-YL的合适腔体提供了机会，可以封装阴离子钌联吡啶衍生物[Ru（dcbpy）（3）]（dcbpy = 2,2-联吡啶-4,4-二羧酸）作为光敏反应的光敏剂。通过质谱，NMR光谱和计算研究研究了Ni-YL和[Ru（dcbpy）（3）]之间的客体行为，揭示了客体[Ru（dcbpy）（3）]在吸附剂中的有效结合。 Ni-YL腔。光学实验表明，[Ru（dcbpy）（3）]与主体Ni-YL之间存在拟分子内光致电子转移（PET）过程，从而导致了基于该系统的高效光驱制氢。还进行了以单核Ni配合物为参比光催化剂和以非活性[Fe（dcbpy）（3）]为抑制剂进行对照实验，以确认这种超分子光催化过程。

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