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dc.contributor.author
Bhattarai, Nabraj
dc.contributor.author
Bhattarai, Nabraj
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Khanal, Subarna
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Khanal, Subarna
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Bahena, Daniel
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Bahena, Daniel
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Olmos Asar, Jimena Anahí
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Olmos Asar, Jimena Anahí
dc.contributor.author
Ponce, Arturo
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Ponce, Arturo
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Whetten, Robert L.
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Whetten, Robert L.
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Mariscal, Marcelo
dc.contributor.author
Mariscal, Marcelo
dc.contributor.author
Yacaman, Miguel Jose
dc.contributor.author
Yacaman, Miguel Jose
dc.date.available
2017-12-27T13:19:08Z
dc.date.issued
2014-05
dc.identifier.citation
Bhattarai, Nabraj; Bhattarai, Nabraj; Khanal, Subarna; Khanal, Subarna; Bahena, Daniel; et al.; Structural order in ultrathin films of the monolayer protected clusters based upon 4 nm gold nanocrystals: an experimental and theoretical study; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 16; 34; 5-2014; 18098-18104
dc.identifier.issn
1463-9076
dc.identifier.uri
http://hdl.handle.net/11336/31619
dc.description.abstract
The structural order in ultrathin films of monolayer protected clusters (MPCs) is important in a number of application areas but can be difficult to demonstrate by conventional methods, particularly when the metallic core dimension, d, is in the intermediate size-range, 1.5 < d < 5.0 nm. Here, improved techniques for the synthesis of monodisperse thiolate-protected gold nanoparticles have made possible the production of dodecane-thiolate saturated ∼4 ± 0.5 nm Au clusters with single-crystal core structure and morphology. An ultrathin ordered film or superlattice of these nanocrystal-core MPCs is prepared and investigated using aberration corrected scanning/transmission electron microscopy (STEM) which allowed imaging of long-range hexagonally ordered superlattices of the nanocrystals, separated by the thiolate groups. The lattice constants determined by direct imaging are in good agreement with those determined by small-angle electron diffraction. The STEM image revealed the characteristic grain boundary (GB) with sigma (Σ) 13 in the interface between two crystals. The formation and structures found are interpreted on the basis of theoretical calculations employing molecular dynamics (MD) simulations and coarse-grained (CG) approach.
dc.description.abstract
The structural order in ultrathin films of monolayer protected clusters (MPCs) is important in a number of application areas but can be difficult to demonstrate by conventional methods, particularly when the metallic core dimension, d, is in the intermediate size-range, 1.5 < d < 5.0 nm. Here, improved techniques for the synthesis of monodisperse thiolate-protected gold nanoparticles have made possible the production of dodecane-thiolate saturated ∼4 ± 0.5 nm Au clusters with single-crystal core structure and morphology. An ultrathin ordered film or superlattice of these nanocrystal-core MPCs is prepared and investigated using aberration corrected scanning/transmission electron microscopy (STEM) which allowed imaging of long-range hexagonally ordered superlattices of the nanocrystals, separated by the thiolate groups. The lattice constants determined by direct imaging are in good agreement with those determined by small-angle electron diffraction. The STEM image revealed the characteristic grain boundary (GB) with sigma (Σ) 13 in the interface between two crystals. The formation and structures found are interpreted on the basis of theoretical calculations employing molecular dynamics (MD) simulations and coarse-grained (CG) approach.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Royal Society of Chemistry
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Monolayer Protected Clusters
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Monolayer Protected Clusters
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Gold Nanocrystals
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Gold Nanocrystals
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Otras Ciencias Químicas
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Structural order in ultrathin films of the monolayer protected clusters based upon 4 nm gold nanocrystals: an experimental and theoretical study
dc.title
Structural order in ultrathin films of the monolayer protected clusters based upon 4 nm gold nanocrystals: an experimental and theoretical study
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-12-21T16:59:28Z
dc.journal.volume
16
dc.journal.number
34
dc.journal.pagination
18098-18104
dc.journal.pais
Reino Unido
dc.journal.ciudad
Cambridge
dc.description.fil
Fil: Bhattarai, Nabraj. University of Texas at San Antonio; Estados Unidos
dc.description.fil
Fil: Bhattarai, Nabraj. University of Texas at San Antonio; Estados Unidos
dc.description.fil
Fil: Khanal, Subarna. University of Texas at San Antonio; Estados Unidos
dc.description.fil
Fil: Khanal, Subarna. University of Texas at San Antonio; Estados Unidos
dc.description.fil
Fil: Bahena, Daniel. University of Texas at San Antonio; Estados Unidos
dc.description.fil
Fil: Bahena, Daniel. University of Texas at San Antonio; Estados Unidos
dc.description.fil
Fil: Olmos Asar, Jimena Anahí. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina. Università degli Studi di Trieste; Italia
dc.description.fil
Fil: Olmos Asar, Jimena Anahí. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina. Università degli Studi di Trieste; Italia
dc.description.fil
Fil: Ponce, Arturo. University of Texas at San Antonio; Estados Unidos
dc.description.fil
Fil: Ponce, Arturo. University of Texas at San Antonio; Estados Unidos
dc.description.fil
Fil: Whetten, Robert L.. University of Texas at San Antonio; Estados Unidos
dc.description.fil
Fil: Whetten, Robert L.. University of Texas at San Antonio; Estados Unidos
dc.description.fil
Fil: Mariscal, Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
dc.description.fil
Fil: Mariscal, Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
dc.description.fil
Fil: Yacaman, Miguel Jose. University of Texas at San Antonio; Estados Unidos
dc.description.fil
Fil: Yacaman, Miguel Jose. University of Texas at San Antonio; Estados Unidos
dc.journal.title
Physical Chemistry Chemical Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1039/c4cp01612b
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1039/c4cp01612b
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2014/CP/C4CP01612B
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2014/CP/C4CP01612B
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4128557/
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