Structural effects of amphiphilic block copolymers on the gold nanoplates synthesis. Experimental and theoretical study

C. Saldías, A. Leiva, C. Quezada, P. Jaque, L. Gargallo, D. Radic

Resultado de la investigación: Article

12 Citas (Scopus)

Resumen

Geometric and multi-arms gold nanoplates were synthesized by direct reaction between two different amphiphilic block copolymers and KAuCl 4 in aqueous solution. Amphiphilic copolymers containing blocks of -caprolactone and N-vinyl-2-pyrrolidone were used. The block copolymer structures and concentration play a key role on the morphology and size of gold nanoparticles. Copolymers have a dual function as reductant and stabilizer agent. The gold nanoparticles obtained were characterized by transmission electron microscopy (TEM), UV-visible spectroscopy (UV-vis) and dynamic light scattering (DLS). On the other hand, electronic structure calculations, based on density functional theory were performed to support the experimental results. The simple models built with small clusters of gold and co-monomer units provide planar structures complexes with higher stabilization energies. These results agree with the nanoplates obtained experimentally. Moreover, the reactivity analysis based on monoelectronic properties suggests that the formation of aggregates between complexes is favored.

Idioma originalEnglish
Páginas (desde-hasta)1866-1876
Número de páginas11
PublicaciónEuropean Polymer Journal
Volumen47
N.º10
DOI
EstadoPublished - oct 2011

Huella dactilar

block copolymers
Gold
Block copolymers
gold
synthesis
stabilizers (agents)
Copolymers
Nanoparticles
Stabilizers (agents)
nanoparticles
planar structures
Reducing Agents
Dynamic light scattering
Ultraviolet spectroscopy
Electronic structure
Density functional theory
copolymers
light scattering
reactivity
Stabilization

ASJC Scopus subject areas

  • Polymers and Plastics
  • Physics and Astronomy(all)
  • Organic Chemistry

Citar esto

Saldías, C. ; Leiva, A. ; Quezada, C. ; Jaque, P. ; Gargallo, L. ; Radic, D. / Structural effects of amphiphilic block copolymers on the gold nanoplates synthesis. Experimental and theoretical study. En: European Polymer Journal. 2011 ; Vol. 47, N.º 10. pp. 1866-1876.
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abstract = "Geometric and multi-arms gold nanoplates were synthesized by direct reaction between two different amphiphilic block copolymers and KAuCl 4 in aqueous solution. Amphiphilic copolymers containing blocks of -caprolactone and N-vinyl-2-pyrrolidone were used. The block copolymer structures and concentration play a key role on the morphology and size of gold nanoparticles. Copolymers have a dual function as reductant and stabilizer agent. The gold nanoparticles obtained were characterized by transmission electron microscopy (TEM), UV-visible spectroscopy (UV-vis) and dynamic light scattering (DLS). On the other hand, electronic structure calculations, based on density functional theory were performed to support the experimental results. The simple models built with small clusters of gold and co-monomer units provide planar structures complexes with higher stabilization energies. These results agree with the nanoplates obtained experimentally. Moreover, the reactivity analysis based on monoelectronic properties suggests that the formation of aggregates between complexes is favored.",
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Structural effects of amphiphilic block copolymers on the gold nanoplates synthesis. Experimental and theoretical study. / Saldías, C.; Leiva, A.; Quezada, C.; Jaque, P.; Gargallo, L.; Radic, D.

En: European Polymer Journal, Vol. 47, N.º 10, 10.2011, p. 1866-1876.

Resultado de la investigación: Article

TY - JOUR

T1 - Structural effects of amphiphilic block copolymers on the gold nanoplates synthesis. Experimental and theoretical study

AU - Saldías, C.

AU - Leiva, A.

AU - Quezada, C.

AU - Jaque, P.

AU - Gargallo, L.

AU - Radic, D.

PY - 2011/10

Y1 - 2011/10

N2 - Geometric and multi-arms gold nanoplates were synthesized by direct reaction between two different amphiphilic block copolymers and KAuCl 4 in aqueous solution. Amphiphilic copolymers containing blocks of -caprolactone and N-vinyl-2-pyrrolidone were used. The block copolymer structures and concentration play a key role on the morphology and size of gold nanoparticles. Copolymers have a dual function as reductant and stabilizer agent. The gold nanoparticles obtained were characterized by transmission electron microscopy (TEM), UV-visible spectroscopy (UV-vis) and dynamic light scattering (DLS). On the other hand, electronic structure calculations, based on density functional theory were performed to support the experimental results. The simple models built with small clusters of gold and co-monomer units provide planar structures complexes with higher stabilization energies. These results agree with the nanoplates obtained experimentally. Moreover, the reactivity analysis based on monoelectronic properties suggests that the formation of aggregates between complexes is favored.

AB - Geometric and multi-arms gold nanoplates were synthesized by direct reaction between two different amphiphilic block copolymers and KAuCl 4 in aqueous solution. Amphiphilic copolymers containing blocks of -caprolactone and N-vinyl-2-pyrrolidone were used. The block copolymer structures and concentration play a key role on the morphology and size of gold nanoparticles. Copolymers have a dual function as reductant and stabilizer agent. The gold nanoparticles obtained were characterized by transmission electron microscopy (TEM), UV-visible spectroscopy (UV-vis) and dynamic light scattering (DLS). On the other hand, electronic structure calculations, based on density functional theory were performed to support the experimental results. The simple models built with small clusters of gold and co-monomer units provide planar structures complexes with higher stabilization energies. These results agree with the nanoplates obtained experimentally. Moreover, the reactivity analysis based on monoelectronic properties suggests that the formation of aggregates between complexes is favored.

KW - Amphiphilic copolymer

KW - Gold clusters

KW - Gold nanoparticles

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