Chang Xiao-Yong, Xu Guang-Tao, Cao Bei, Wang Juan-Yu, Huang Jie-Sheng, Che Chi-Ming
State Key Laboratory of Synthetic Chemistry , Institute of Molecular Functional Materials , Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China . Email:
HKU Shenzhen Institute of Research and Innovation , Shenzhen 518053 , China.
Chem Sci. 2017 Nov 1;8(11):7815-7820. doi: 10.1039/c7sc03529b. Epub 2017 Oct 4.
Homo-metallic metal alkynyl complexes exhibit interesting catenane structures, but their hetero-metallic catenane counterparts are under-developed. In this work, we report rare examples of bimetallic Au-Cu (DtbpC[triple bond, length as m-dash]C ligand; Dtbp = 3,5-di--butylphenyl), Au-Ag ( BuC[triple bond, length as m-dash]C ligand), and Au-Cu, Au-Ag (C6-FluoC[triple bond, length as m-dash]C ligand; C6-Fluo = 9,9-dihexyl-9-fluoren-2-yl) complexes as well as a trimetallic Au-Ag-Cu (C6-FluoC[triple bond, length as m-dash]C ligand) complex, which feature [2]catenane structures. The formation of the [2]catenane structure is significantly affected by the coinage metal ion(s) and change of the structure of the alkynyl ligand. These hetero-metallic [2]catenane structures are strongly luminescent with tunable emission from 503 to 595 nm and values up to 0.83.
同金属的金属炔基配合物展现出有趣的索烃结构，但其异金属索烃对应物的研究尚不完善。在这项工作中，我们报道了双金属Au-Cu（DtbpC≡C配体；Dtbp = 3,5-二叔丁基苯基）、Au-Ag（ BuC≡C配体）以及Au-Cu、Au-Ag（C6-FluoC≡C配体；C6-Fluo = 9,9-二己基-9-芴-2-基）配合物的罕见实例，还有一种三金属Au-Ag-Cu（C6-FluoC≡C配体）配合物，它们都具有[2]索烃结构。[2]索烃结构的形成受到货币金属离子和炔基配体结构变化的显著影响。这些异金属[2]索烃结构具有强烈的发光性，发射波长可在503至595 nm范围内调节，量子产率高达0.83。
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