title: Superlattice of rodlike virus particles formed in aqueous solution through like-charge attraction.
abstract: Rodlike tobacco mosaic virus (TMV) has been found to assemble into a 2D superlattice in aqueous solution with hexagonally packed structures in the presence of Ba(2+) through like-charge attraction whereas lower-Z divalent ions such as Zn(2+), Cd(2+), Mg(2+), and Ca(2+) induce only liquidlike ordering. The molar ratio between Ba(2+) and TMV is a crucial parameter in the formation of the superlattice. There is a critical molar ratio of Ba(2+) to TMV at which TMV exhibits a transition from a nonordered colloidal state to an ordered crystalline state. It is also found that the superlattice is formed regardless of the pH and TMV concentration within the range studied.
authors.affiliation: X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439, USA.
authors.forename: Tao
authors.initials: T
authors.lastname: Li
authors.forename: Randall E
authors.initials: RE
authors.lastname: Winans
authors.forename: Byeongdu
authors.initials: B
authors.lastname: Lee
mesh_terms: D001464:Barium / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008958:Models, Molecular; D010316:Particle Size; D012996:Solutions; D055672:Static Electricity; D013499:Surface Properties; D014027:Tobacco Mosaic Virus / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D012996:Solutions; D014867:Water; D001464:Barium