title: Complex nanoscale cage clusters built from uranyl polyhedra and phosphate tetrahedra.
abstract: Five cage clusters that self-assemble in alkaline aqueous solution have been isolated and characterized. Each is built from uranyl hexagonal bipyramids with two or three equatorial edges occupied by peroxide, and three also contain phosphate tetrahedra. These clusters contain 30 uranyl polyhedra; 30 uranyl polyhedra and six pyrophosphate groups; 30 uranyl polyhedra, 12 pyrophosphate groups, and one phosphate tetrahedron; 42 uranyl polyhedra; and 40 uranyl polyhedra and three pyrophosphate groups. These clusters present complex topologies as well as a range of compositions, sizes, and charges. Two adopt fullerene topologies, and the others contain combinations of topological squares, pentagons, and hexagons. An analysis of possible topologies further indicates that higher-symmetry topologies are favored.
authors: Department of Civil Engineering and Geological Sciences, University of Notre Dame, 156 Fitzpatrick Hall, Notre Dame, Indiana 46556, USA.
authors: Daniel K
authors: DK
authors: Unruh
authors: Jie
authors: J
authors: Ling
authors: Jie
authors: J
authors: Qiu
authors: Laura
authors: L
authors: Pressprich
authors: Melissa
authors: M
authors: Baranay
authors: Matthew
authors: M
authors: Ward
authors: Peter C
authors: PC
authors: Burns