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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
1
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pubmed:dateCreated |
2011-1-25
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pubmed:abstractText |
Selective aggregation and precipitation of like-charged nanoparticles (NPs) covered with carboxylate ligands can be induced by different monovalent cations. The ordering of critical concentrations required for NP precipitation is Cs(+) ? K(+) > Li(+) > Na(+) > Rb(+) and does not correlate with the size of hydrated cations M(+), nor can it be predicted by the Hofmeister series. On the other hand, different anions have no effect on the precipitation trends. These observations are rationalized by a theoretical model combining the elements of the DLVO theory with molecular-level calculations. The key component of the model is the cation-specific binding of various metal cations to the carboxylate ligands.
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Jan
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pubmed:issn |
1936-086X
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pubmed:author |
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pubmed:issnType |
Electronic
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pubmed:day |
25
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pubmed:volume |
5
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
530-6
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pubmed:meshHeading |
pubmed-meshheading:21182267-Cations, Monovalent,
pubmed-meshheading:21182267-Fatty Acids,
pubmed-meshheading:21182267-Gold,
pubmed-meshheading:21182267-Models, Molecular,
pubmed-meshheading:21182267-Molecular Conformation,
pubmed-meshheading:21182267-Nanoparticles,
pubmed-meshheading:21182267-Salts,
pubmed-meshheading:21182267-Static Electricity,
pubmed-meshheading:21182267-Sulfhydryl Compounds,
pubmed-meshheading:21182267-Surface Properties,
pubmed-meshheading:21182267-Thermodynamics
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pubmed:year |
2011
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pubmed:articleTitle |
Bridging interactions and selective nanoparticle aggregation mediated by monovalent cations.
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pubmed:affiliation |
School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, P. R. China.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
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