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 |
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Hauptverfasser: | , , , , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
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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. |
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ISSN: | 2041-6520 2041-6539 |
DOI: | 10.1039/c9sc02012h |