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首页> 外文期刊>Journal of Physical Organic Chemistry >Ru(II) complexes and light: molecular tools for biomolecules
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Ru(II) complexes and light: molecular tools for biomolecules

机译:钌(II)配合物和光:生物分子的分子工具

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摘要

Ruthenium(II) (Ru(II)) complexes are the focus of numerous research works with various applications mainly due to their attractive photophysical and photochemical properties. In biological research areas, in particular, they are developed as efficient photoprobes or photosensors of biological molecules. More interestingly specific Ru(II) complexes bearing pi-deficient ligands such as TAP = 1,4,5,8-tetraazaphenanthrene, bpz = 2,2'-bipyrazyl or HAT = 1,4,5,8,9,12-hexaazatriphenylene exhibit interesting photoreactivity with biomolecules (DNA, polypeptides). The photoreactions are initiated by a photo-electron transfer from the biomolecule to the excited metal complex. A back electron transfer (BET) succeeds this primary process. However in competition with this BET, a DNA photocleavage and/or formation of adducts of the complex with guanine units of DNA or with tryptophan (Trp) residues of polypeptides can take place. In this review we highlight the studies of these photo-adducts carried out by our laboratories, and connected to some applications.
机译:钌(II)(Ru(II))配合物是许多研究工作的焦点,这些研究具有多种应用,主要是因为它们具有吸引人的光物理和光化学特性。特别地,在生物学研究领域,它们被开发为生物分子的有效光探针或光传感器。有趣的是,特定的Ru(II)络合物带有pi不足的配体,例如TAP = 1,4,5,8-四氮杂菲,bpz = 2,2'-联吡唑基或HAT = 1,4,5,8,9,12-六氮杂苯并菲与生物分子(DNA,多肽)表现出有趣的光反应性。通过从生物分子到受激金属络合物的光电子转移来引发光反应。反向电子转移(BET)成功完成了这一主要过程。然而,在与该BET竞争中,可以进行DNA光裂解和/或与鸟嘌呤DNA单位或与多肽的色氨酸(Trp)残基的复合物加合物的形成。在这篇综述中,我们重点介绍了我们实验室对这些光加合物的研究,并与某些应用相关。

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