Abstract
The self-assembled trimetallic species [L2Cu3]6+ contains a cavity that acts as a host to many different anions. By using X-ray crystallography, ESI-MS, and UV/Vis spectroscopy we show that these anions are encapsulated both in the solid state and aqueous systems. Upon encapsulation, the anions Br−, I−, CO3 2−, SiF6 2−, IO6 3−, VO4 3−, WO4 2−, CrO4 2−, SO4 2−, AsO4 3−, and PO4 3− are all precipitated from aqueous solution and can be removed by filtration. Furthermore, the cavity can be tuned to be selective to either phosphate or sulfate anions by variation of the pH. Phosphate anions can be removed from water, even in the presence of other common anions, reducing the concentration from 1000 to <0.1 ppm and recovering approximately 99 % of the phosphate anions.
Original language | English |
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Pages (from-to) | 13071-13075 |
Number of pages | 5 |
Journal | Angewandte Chemie - International Edition |
Volume | 57 |
Issue number | 40 |
Early online date | 16 Aug 2018 |
DOIs | |
Publication status | Published - 1 Oct 2018 |
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Dive into the research topics of 'Self-Assembly of an Anion-Binding Cryptand for the Selective Encapsulation, Sequestration, and Precipitation of Phosphate from Aqueous Systems'. Together they form a unique fingerprint.Profiles
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Robert Allan
- School of Applied Sciences - School Director of Teaching and Learning
- Department of Physical and Life Sciences
- Centre for Human and Physical Geography - Member
- Centre for Climate Resilient Societies
Person: Academic
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Craig Rice
- Department of Physical and Life Sciences - Professor and Head of Department (Physical & Life Sciences)
- School of Applied Sciences
- Structural, Molecular and Dynamic Modelling Centre - Director
Person: Academic