Small gold nanoparticles synthesized with sodium citrate and heavy water: Insights into the reaction mechanism

Isaac Ojea-Jiménez; Francisco M. Romero; Neus G. Bastús; Victor Puntes

doi:10.1021/jp9091305

Small gold nanoparticles synthesized with sodium citrate and heavy water: Insights into the reaction mechanism

Isaac Ojea-Jiménez, Francisco M. Romero, Neus G. Bastús, Victor Puntes

Department of Chemistry

Research output: Contribution to journal › Article › Research › peer-review

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Abstract

The effect of solvent isotopic replacement (H for D) on the size of gold nanoparticles (Au NPs) prepared by sodium citrate reduction has been investigated. With increasing replacement of water by deuterium oxide, smaller sizes of Au NPs are obtained, which is interpreted as a consequence of a faster reduction. A mechanism in which a substitution complex, [AuCl 3(C 6H 5O 7) -2] -, is formed from AuCl 4 and citrate ions prior to its rate-limiting disproportionation into products is suggested. This novel procedure offers an attractive alternative to the existing ones and opens a full range of possibilities for biological studies. © 2010 American Chemical Society.

Original language	English
Pages (from-to)	1800-1804
Journal	Journal of Physical Chemistry C
Volume	114
Issue number	4
DOIs	https://doi.org/10.1021/jp9091305
Publication status	Published - 4 Feb 2010

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title = "Small gold nanoparticles synthesized with sodium citrate and heavy water: Insights into the reaction mechanism",

abstract = "The effect of solvent isotopic replacement (H for D) on the size of gold nanoparticles (Au NPs) prepared by sodium citrate reduction has been investigated. With increasing replacement of water by deuterium oxide, smaller sizes of Au NPs are obtained, which is interpreted as a consequence of a faster reduction. A mechanism in which a substitution complex, [AuCl 3(C 6H 5O 7) -2] -, is formed from AuCl 4 and citrate ions prior to its rate-limiting disproportionation into products is suggested. This novel procedure offers an attractive alternative to the existing ones and opens a full range of possibilities for biological studies. {\textcopyright} 2010 American Chemical Society.",

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AU - Ojea-Jiménez, Isaac

AU - Romero, Francisco M.

AU - Bastús, Neus G.

AU - Puntes, Victor

PY - 2010/2/4

Y1 - 2010/2/4

N2 - The effect of solvent isotopic replacement (H for D) on the size of gold nanoparticles (Au NPs) prepared by sodium citrate reduction has been investigated. With increasing replacement of water by deuterium oxide, smaller sizes of Au NPs are obtained, which is interpreted as a consequence of a faster reduction. A mechanism in which a substitution complex, [AuCl 3(C 6H 5O 7) -2] -, is formed from AuCl 4 and citrate ions prior to its rate-limiting disproportionation into products is suggested. This novel procedure offers an attractive alternative to the existing ones and opens a full range of possibilities for biological studies. © 2010 American Chemical Society.

AB - The effect of solvent isotopic replacement (H for D) on the size of gold nanoparticles (Au NPs) prepared by sodium citrate reduction has been investigated. With increasing replacement of water by deuterium oxide, smaller sizes of Au NPs are obtained, which is interpreted as a consequence of a faster reduction. A mechanism in which a substitution complex, [AuCl 3(C 6H 5O 7) -2] -, is formed from AuCl 4 and citrate ions prior to its rate-limiting disproportionation into products is suggested. This novel procedure offers an attractive alternative to the existing ones and opens a full range of possibilities for biological studies. © 2010 American Chemical Society.

U2 - 10.1021/jp9091305

DO - 10.1021/jp9091305

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VL - 114

SP - 1800

EP - 1804

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 4

ER -

Small gold nanoparticles synthesized with sodium citrate and heavy water: Insights into the reaction mechanism

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