Integrated synthesis of gold nanoparticles coated with polyoxometalate clusters

Martín, S., Takashima, Y., Lin, C.-G., Song, Y.-F., Miras, H. N. and Cronin, L. (2019) Integrated synthesis of gold nanoparticles coated with polyoxometalate clusters. Inorganic Chemistry, 58(7), pp. 4110-4116. (doi:10.1021/acs.inorgchem.8b03013) (PMID:30869513)

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Abstract

Polyoxometalates (POMs) have been found to be good end-capping ligands for gold nanoparticles (AuNPs). Herein, we introduce a new synthetic method to synthesize gold nanoparticle–POM hybrids by heating a solution of AuNO3(PMe3) in acetonitrile in the presence of appropriate POM species with tetrabutylammonium (TBA) as a countercation at 120 °C in a microwave. This method allowed us to produce POM-capped AuNPs without over-reduction of the solution causing decomposition or reorganization of the POMs. Analysis of the resulting material by transmission electron microscopy showed that the POM’s size, charge, and functionality are key factors controlling the resulting POM–AuNP hybrid structure. Additionally, the reaction was monitored by electrospray ionization mass spectrometry (ESI-MS), ultraviolet–visible spectroscopy, and dynamic light scattering. The ESI-MS studies reveal crucial information regarding the nature of the reaction that takes place, showing the cation exchange between Au(I) and TBA cations, followed by self-reduction of the Me3PAu(I)–POM complex.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Martin Marti, Mr Sergio and Moiras, Dr Haralampos and Takashima, Dr Yohei and Cronin, Professor Lee
Authors: Martín, S., Takashima, Y., Lin, C.-G., Song, Y.-F., Miras, H. N., and Cronin, L.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Inorganic Chemistry
Publisher:American Chemical Society
ISSN:0020-1669
ISSN (Online):1520-510X
Published Online:14 March 2019
Copyright Holders:Copyright © 2019 American Chemical Society
First Published:First published in Inorganic Chemistry 58(7):4110-4116
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
646611Programmable 'Digital' Synthesis for Discovery and Scale-up of Molecules, Clusters and NanomaterialsLeroy CroninEngineering and Physical Sciences Research Council (EPSRC)EP/L023652/1CHEM - CHEMISTRY
3012410Ultra-Reduced Polyoxometalates as Electron-Coupled-Proton-Systems for Energy StorageLeroy CroninEngineering and Physical Sciences Research Council (EPSRC)EP/R020914/1Chemistry
3005910Programmable Molecular Metal Oxides (PMMOs) - From Fundamentals to ApplicationLeroy CroninEngineering and Physical Sciences Research Council (EPSRC)EP/R01308X/1Chemistry
616021Energy and the Physical Sciences: Hydrogen Production using a Proton Electron BufferLeroy CroninEngineering and Physical Sciences Research Council (EPSRC)EP/K023004/1CHEM - CHEMISTRY
503295Molecular-Metal-Oxide-nanoelectronicS (M-MOS): Achieving the Molecular LimitLeroy CroninEngineering and Physical Sciences Research Council (EPSRC)EP/H024107/1CHEM - CHEMISTRY
562821Innovative Manufacturing Research Centre for Continuous Manufacturing and Crystallisation (CMAC)Leroy CroninEngineering and Physical Sciences Research Council (EPSRC)EP/I033459/1CHEM - CHEMISTRY
577391Programmable Molecular Metal Oxides (PMMOs) - From Fundamentals to ApplicationLeroy CroninEngineering and Physical Sciences Research Council (EPSRC)EP/J015156/1CHEM - CHEMISTRY
685741SMARTPOM: Artificial-Intelligence Driven Discovery and Synthesis of Polyoxometalate ClustersLeroy CroninEuropean Research Council (ERC)670467CHEM - CHEMISTRY

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