Journal
CHEMICAL COMMUNICATIONS
Volume 54, Issue 72, Pages 10048-10051Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cc05115a
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Funding
- U. S. Department of Energy, Office of Science, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division
- Center for Nanophase Materials Sciences - Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy
- Neutron Scattering Division - Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy
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We report a novel di(imino)guanidinium anion extractant with unparalleled selectivity for sulfate in a liquid-liquid separation system. In addition to a 4.4 order-of-magnitude enhancement in affinity compared to a standard benchmark, our alkylated di(imino)guanidinium receptor is economically synthesized and features good compatibility with application-relevant aliphatic solvents. Small-angle X-ray scattering results reveal the formation of reverse-micelles, which together with the significant organic-phase water content challenge traditional notions of selectivity in extraction of superhydrophilic anions.
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