The structure and binding mode of citrate in the stabilization of gold nanoparticles

Handle URI:
http://hdl.handle.net/10754/625571
Title:
The structure and binding mode of citrate in the stabilization of gold nanoparticles
Authors:
Al-Johani, Hind; Abou-Hamad, Edy; Jedidi, Abdesslem ( 0000-0003-4070-3299 ) ; Widdifield, Cory M. ( 0000-0002-1144-1026 ) ; Viger-Gravel, Jasmine; Sangaru, Shiv ( 0000-0002-3506-8238 ) ; Gajan, David; Anjum, Dalaver H.; Ould-Chikh, Samy ( 0000-0002-3486-0944 ) ; Hedhili, Mohamed N. ( 0000-0002-3624-036X ) ; Gurinov, Andrei ( 0000-0002-9488-3064 ) ; Kelly, Michael J. ( 0000-0003-3114-8780 ) ; El Eter, Mohamad; Cavallo, Luigi ( 0000-0002-1398-338X ) ; Basset, Jean-Marie ( 0000-0003-3166-8882 ) ; Basset, Jean-Marie ( 0000-0003-3166-8882 )
Abstract:
Elucidating the binding mode of carboxylate-containing ligands to gold nanoparticles (AuNPs) is crucial to understand their stabilizing role. A detailed picture of the three-dimensional structure and coordination modes of citrate, acetate, succinate and glutarate to AuNPs is obtained by 13C and 23Na solid-state NMR in combination with computational modelling and electron microscopy. The binding between the carboxylates and the AuNP surface is found to occur in three different modes. These three modes are simultaneously present at low citrate to gold ratios, while a monocarboxylate monodentate (1κO1) mode is favoured at high citrate:gold ratios. The surface AuNP atoms are found to be predominantly in the zero oxidation state after citrate coordination, although trace amounts of Auδ+ are observed. 23Na NMR experiments show that Na+ ions are present near the gold surface, indicating that carboxylate binding occurs as a 2e− L-type interaction for each oxygen atom involved. This approach has broad potential to probe the binding of a variety of ligands to metal nanoparticles.
KAUST Department:
KAUST Catalysis Center (KCC); Physical Sciences and Engineering (PSE) Division; Imaging and Characterization Core Lab
Citation:
Al-Johani H, Abou-Hamad E, Jedidi A, Widdifield CM, Viger-Gravel J, et al. (2017) The structure and binding mode of citrate in the stabilization of gold nanoparticles. Nature Chemistry 9: 890–895. Available: http://dx.doi.org/10.1038/nchem.2752.
Publisher:
Springer Nature
Journal:
Nature Chemistry
Issue Date:
27-Mar-2017
DOI:
10.1038/nchem.2752
Type:
Article
ISSN:
1755-4330; 1755-4349
Sponsors:
This work received support from the King Abdullah University of Science and Technology (KAUST) and ERC Advanced Grant No. 320860. For computer time, this research used the resources of the Supercomputing Laboratory at King Abdullah University of Science & Technology (KAUST) in Thuwal, Saudi Arabia.
Additional Links:
https://www.nature.com/nchem/journal/vaop/ncurrent/full/nchem.2752.html
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; KAUST Catalysis Center (KCC)

Full metadata record

DC FieldValue Language
dc.contributor.authorAl-Johani, Hinden
dc.contributor.authorAbou-Hamad, Edyen
dc.contributor.authorJedidi, Abdesslemen
dc.contributor.authorWiddifield, Cory M.en
dc.contributor.authorViger-Gravel, Jasmineen
dc.contributor.authorSangaru, Shiven
dc.contributor.authorGajan, Daviden
dc.contributor.authorAnjum, Dalaver H.en
dc.contributor.authorOuld-Chikh, Samyen
dc.contributor.authorHedhili, Mohamed N.en
dc.contributor.authorGurinov, Andreien
dc.contributor.authorKelly, Michael J.en
dc.contributor.authorEl Eter, Mohamaden
dc.contributor.authorCavallo, Luigien
dc.contributor.authorBasset, Jean-Marieen
dc.contributor.authorBasset, Jean-Marieen
dc.date.accessioned2017-10-03T12:49:26Z-
dc.date.available2017-10-03T12:49:26Z-
dc.date.issued2017-03-27en
dc.identifier.citationAl-Johani H, Abou-Hamad E, Jedidi A, Widdifield CM, Viger-Gravel J, et al. (2017) The structure and binding mode of citrate in the stabilization of gold nanoparticles. Nature Chemistry 9: 890–895. Available: http://dx.doi.org/10.1038/nchem.2752.en
dc.identifier.issn1755-4330en
dc.identifier.issn1755-4349en
dc.identifier.doi10.1038/nchem.2752en
dc.identifier.urihttp://hdl.handle.net/10754/625571-
dc.description.abstractElucidating the binding mode of carboxylate-containing ligands to gold nanoparticles (AuNPs) is crucial to understand their stabilizing role. A detailed picture of the three-dimensional structure and coordination modes of citrate, acetate, succinate and glutarate to AuNPs is obtained by 13C and 23Na solid-state NMR in combination with computational modelling and electron microscopy. The binding between the carboxylates and the AuNP surface is found to occur in three different modes. These three modes are simultaneously present at low citrate to gold ratios, while a monocarboxylate monodentate (1κO1) mode is favoured at high citrate:gold ratios. The surface AuNP atoms are found to be predominantly in the zero oxidation state after citrate coordination, although trace amounts of Auδ+ are observed. 23Na NMR experiments show that Na+ ions are present near the gold surface, indicating that carboxylate binding occurs as a 2e− L-type interaction for each oxygen atom involved. This approach has broad potential to probe the binding of a variety of ligands to metal nanoparticles.en
dc.description.sponsorshipThis work received support from the King Abdullah University of Science and Technology (KAUST) and ERC Advanced Grant No. 320860. For computer time, this research used the resources of the Supercomputing Laboratory at King Abdullah University of Science & Technology (KAUST) in Thuwal, Saudi Arabia.en
dc.publisherSpringer Natureen
dc.relation.urlhttps://www.nature.com/nchem/journal/vaop/ncurrent/full/nchem.2752.htmlen
dc.titleThe structure and binding mode of citrate in the stabilization of gold nanoparticlesen
dc.typeArticleen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentImaging and Characterization Core Laben
dc.identifier.journalNature Chemistryen
dc.contributor.institutionUniversity of Tabuk, Chemistry Department, College of AlWajh, Al Wajh, Saudi Arabiaen
dc.contributor.institutionDepartment of Chemistry, King Abdulaziz University, Jeddah, Saudi Arabiaen
dc.contributor.institutionDepartment of Chemistry, Durham University, DH1 3LE Durham, UKen
dc.contributor.institutionInstitut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerlanden
dc.contributor.institutionInstitut de Sciences Analytiques (CNRS/ENS de Lyon/UCB-Lyon 1), Centre de RMN a Tres Hauts Champs, Universite de Lyon, Villeurbanne, Franceen
kaust.authorAl-Johani, Hinden
kaust.authorAbou-Hamad, Edyen
kaust.authorJedidi, Abdesslemen
kaust.authorSangaru, Shiven
kaust.authorAnjum, Dalaver H.en
kaust.authorOuld-Chikh, Samyen
kaust.authorHedhili, Mohamed N.en
kaust.authorGurinov, Andreien
kaust.authorKelly, Michael J.en
kaust.authorEl Eter, Mohamaden
kaust.authorCavallo, Luigien
kaust.authorBasset, Jean-Marieen
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