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Published on: February 6, 2021
Trefoiled Propeller-Shaped Spiral Terpyridyl Metal-Organic Architectures
Mingzhao Chen1, Die Liu1, Jian Huang2
1Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education , Guangzhou University , Guangzhou , 510006 , China.
Abstract:
Constructing exquisite and intricate molecular architectures is always the pursuit of chemists. In this report, the propeller-shaped trefoil structures S1 and S2 were successfully prepared by the stepwise self-assembly of predesigned tripodal metal-organic ligands, which consist of bis(terpyridine)s-Ru2+-tris(terpyridine)s connectivities for the following complexation with Fe2+. The complexes can be described as racemic spiral assemblies with three-fold spiralism. These unique discrete metal-organic architectures were fully characterized by 1H NMR, 2D NMR spectroscopy (COSY and NOESY), diffusion-ordered NMR spectroscopy (DOSY), ESI-MS, TWIM-MS, and TEM, and their photophysical and electrochemical properties were also investigated. Further, hybrid trefoiled structure [Fe3L1L2] was detected by taking advantage of the flexibility of metal-organic ligands.
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