Selective total encapsulation of the sulfate anion by neutral nano-jars.
Nano-sized toroidal copper(II)-hydroxide/pyrazolate assemblies, lined by H-bond donors on the inside and hydrophobic on the outside, selectively extract sulfate from mixtures with nitrate or perchlorate. Tetrabutylammonium "lids" seal the "nano-jars" and render the encapsulated sulfate anion completely buried and inaccessible, so that it is not precipitated by Ba(2+) ions.
Department of Chemistry, Western Michigan University, Kalamazoo, MI 49008, USA.
Isurika R
IR
Fernando
Stuart A
SA
Surmann
Alexander A
AA
Urech
Alexander M
AM
Poulsen
Gellert
G
Mezei
D000838:Anions / Q000737:chemistry; D003300:Copper / Q000737:chemistry; D006860:Hydrogen Bonding; D057927:Hydrophobic and Hydrophilic Interactions; D049329:Nanostructures / Q000737:chemistry*; D009566:Nitrates / Q000737:chemistry; D010472:Perchlorates / Q000737:chemistry; D011720:Pyrazoles / Q000737:chemistry; D013431:Sulfates / Q000737:chemistry*
D000838:Anions; D009566:Nitrates; D010472:Perchlorates; D011720:Pyrazoles; D013431:Sulfates; C031280:pyrazole; D003300:Copper; C494474:perchlorate