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dc.contributor.author
Milette, Jonathan
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Toader, Violeta
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Soulé, Ezequiel Rodolfo
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Lennox, R. Bruce
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Rey, Alejandro D.
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Reven, Linda
dc.date.available
2015-10-29T19:22:20Z
dc.date.issued
2013-01-17
dc.identifier.citation
Milette, Jonathan; Toader, Violeta; Soulé, Ezequiel Rodolfo; Lennox, R. Bruce; Rey, Alejandro D.; et al.; A molecular and thermodynamic view of the assembly of gold nanoparticles in nematic liquid crystal; American Chemical Society; Langmuir; 29; 4; 17-1-2013; 1258-1263
dc.identifier.issn
0743-7463
dc.identifier.uri
http://hdl.handle.net/11336/2575
dc.description.abstract
The molecular interactions driving the assembly of gold nanoparticles (AuNPs) in a nematic liquid crystal (LC) are directly detected by nuclear magnetic resonance (NMR) spectroscopy and thermodynamically analyzed. The orientational orders of the selectively deuterated LC matrix and AuNP ligands, each separately followed by variable temperature 2H NMR as a function of particle concentration, were observed to be strongly correlated. The mechanism of the reversible formation of long-range, quasi-periodic nanoparticle structures is attributed to the coupling of the AuNP ligands to the LC matrix, inducing an isotropic–nematic biphasic state. Experimentally validated thermodynamic modeling shows that, in contrast to colloidal nematics that are dominated by elastic forces, nematic dispersions of nanoparticles self-organize through a subtle balance of entropic forces and excluded volume, interface-mediated mesogen and nanoparticle molecular interactions, and couplings between conserved and nonconserved order parameters. Fine-tuning of these interactions through ligand and mesogen chemistry, together with mesoscale modeling, provides a route for materials innovations by merging structured fluid physics and nanoscience.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
NPs
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Ingeniería de los Materiales
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Ingeniería de los Materiales
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INGENIERÍAS Y TECNOLOGÍAS
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Físico-Química, Ciencia de los Polímeros, Electroquímica
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
A molecular and thermodynamic view of the assembly of gold nanoparticles in nematic liquid crystal
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
29
dc.journal.number
4
dc.journal.pagination
1258-1263
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Washington
dc.description.fil
Fil: Milette, Jonathan. McGill University; Canadá
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Fil: Toader, Violeta. McGill University; Canadá
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Fil: Soulé, Ezequiel Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; Argentina
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Fil: Lennox, R. Bruce. McGill University; Canadá
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Fil: Rey, Alejandro D.. McGill University; Canadá
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Fil: Reven, Linda. McGill University; Canadá
dc.journal.title
Langmuir
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/la304189n
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/la304189n
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