Synthesis of Os(ii)-Re(i)-Ru(ii) hetero-trinuclear complexes and their photophysical properties and photocatalytic abilities.

Synthesis of Os(ii)-Re(i)-Ru(ii) hetero-trinuclear complexes and their photophysical properties and photocatalytic abilities.
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DOI:
10.1039/c7sc04162d
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发表时间:
2018-01-28
期刊:
影响因子:
8.4
通讯作者:
Ishitani O
Ishitani O
中科院分区:
化学1区
文献类型:
--
作者:
Yamazaki Y;Ishitani O

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本文合成了一系列新型的Os(ii)-Re(i)-Ru(ii)异三核配合物,它们能吸收较宽的可见光,并能诱导CO2的持久还原。采用分步Mizoroki-Heck反应首次合成了含三种不同中心金属(Os(ii),Re(i)和Ru(ii))的光功能三核配合物。Os(ii)-Re(i)-Ru(ii)三核配合物的桥连配体中的亚乙烯基通过光化学氢化以中等产率被选择性还原,从而提供了新型的超分子光催化剂,其可以吸收宽范围的可见光,直到730 nm,并且诱导CO2还原具有高选择性和耐久性。CO生成的转化数超过4300。这些新的三核配合物,特别是它们的分子内激发能量转移现象的物理性质的细节,也报道。
Novel Os(ii)–Re(i)–Ru(ii) hetero-trinuclear complexes, which can absorb a wide range of visible light and induce durable CO2 reduction, were synthesised. Photofunctional trinuclear complexes containing three different central metals, i.e. Os(ii), Re(i) and Ru(ii), were synthesised for the first time using stepwise Mizoroki–Heck reactions. The vinylene groups in the bridging ligands of the Os(ii)–Re(i)–Ru(ii) trinuclear complexes were selectively reduced by photochemical hydrogenation in moderate yield, affording novel supramolecular photocatalysts which can absorb a wide range of visible light up to 730 nm and induce CO2 reduction with high selectivity and durability. The turnover numbers of CO formation were over 4300. Details of the photophysical properties of these new trinuclear complexes, especially their intramolecular excitation-energy transfer phenomena, are also reported.
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