Journal
LANGMUIR
Volume 27, Issue 17, Pages 10929-10937Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la202121s
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Funding
- U.S. DOE [DE-AC02-06CH11357]
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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 Ba2+ through like-charge attraction whereas lower-Z divalent ions such as Zn2+, Cd2+, Mg2+, and Ca2+ induce only liquidlike ordering. The molar ratio between Ba2+ and TMV is a crucial parameter in the formation of the superlattice. There is a critical molar ratio of Ba2+ 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.
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