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Title: Elucidating the origin of the attractive force among hydrophilic macroions

In this study, coarse-grained simulation approach is applied to provide a general understanding of various soluble, hydrophilic macroionic solutions, especially the strong attractions among the like-charged soluble macroions and the consequent spontaneous, reversible formation of blackberry structures with tunable sizes. This model captures essential molecular details of the macroions and their interactions in polar solvents. Results using this model provide consistent conclusions to the experimental observations, from the nature of the attractive force among macroions (counterion-mediated attraction), to the blackberry formation mechanism. The conclusions can be applied to various macroionic solutions from inorganic molecular clusters to dendrimers and biomacromolecules.
Authors:
 [1] ;  [1] ;  [1]
  1. Univ. of Akron, Akron, OH (United States). Dept. of Polymer Science
Publication Date:
OSTI Identifier:
1282008
Grant/Contract Number:
SC0001089
Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Research Org:
Univ. of Akron, Akron, OH (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY molecular-dynamics simulations; aqueous-solution; dilute-solutions; keggin anions; counterions; nanostructures; macroanions; transition; vesicles; clusters