title: Urea-functionalized crystalline capsules for recognition and separation of tetrahedral oxoanions.
abstract: The persistent ability of tripodal TREN-based tris-urea receptors (TREN = tris(2-aminoethyl)amine) to self-assemble with a variety of oxoanions into dimeric capsules upon crystallization is reviewed. The capsule crystallization allows for charge-, shape-, and size-selective encapsulation of tetrahedral XO(4)(n-) anions (n = 2,3), and provides an effective way to separate these anions from competitive aqueous environments.
authors: Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6119, USA. custelceanr@ornl.gov
authors: Radu
authors: R
authors: Custelcean
mesh_terms: D000838:Anions / Q000737:chemistry; D018360:Crystallography, X-Ray; D005029:Ethylenediamines / Q000737:chemistry; D008958:Models, Molecular; D014508:Urea / Q000737:chemistry*
chemical_list: D000838:Anions; D005029:Ethylenediamines; C099539:tris(2-aminoethyl)amine; D014508:Urea