Construction and interconversion of anion-coordination-based ('aniono') grids and double helicates modulated by counter-cations

Supramolecular assembly of well-defined discrete architectures has been of great interest due to the tunable properties of these structures in functional materials and bio-mimicking. While metal-coordination-driven assembly has been extensively studied, anion-coordination-driven assembly (ACDA) is j...

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Veröffentlicht in:Chemical science (Cambridge) 2019-07, Vol.1 (25), p.6278-6284
Hauptverfasser: Fan, Xiaoxia, Zhang, Dan, Jiang, Shiyu, Wang, Heng, Lin, Lin-Ting, Zheng, Bo, Xu, Wen-Hua, Zhao, Yanxia, Hay, Benjamin P, Chan, Yi-Tsu, Yang, Xiao-Juan, Li, Xiaopeng, Wu, Biao
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Sprache:eng
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Zusammenfassung:Supramolecular assembly of well-defined discrete architectures has been of great interest due to the tunable properties of these structures in functional materials and bio-mimicking. While metal-coordination-driven assembly has been extensively studied, anion-coordination-driven assembly (ACDA) is just emerging for constructing complex supramolecular structures. Herein two A 2 n L 2 n (A = anion, L = ligand; n = 1 or 2) 'aniono'-supramolecular assemblies, i.e. double helicates and the first anion grid, have been constructed based on the coordination between phosphate (PO 4 3− ) anion and a bis-tris(urea) ligand. Moreover, the aniono-grid and double helicate motifs can be readily interconverted under ambient conditions by simply changing the counter-cation. These results redefine the power and scope of ACDA, which may represent a new approach in the assembly of well-defined architectures in parallel with the metal coordination-driven assembly of metallo-supramolecules. 'Aniono' double helicates and grids were constructed using PO 4 3− anions and a bis-tris(urea) ligand and interconverted by changing the counter-cation.
ISSN:2041-6520
2041-6539
DOI:10.1039/c9sc02012h