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)

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, Professor 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

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
64661	1	Programmable 'Digital' Synthesis for Discovery and Scale-up of Molecules, Clusters and Nanomaterials	Leroy Cronin	Engineering and Physical Sciences Research Council (EPSRC)	EP/L023652/1	CHEM - CHEMISTRY
301241	0	Ultra-Reduced Polyoxometalates as Electron-Coupled-Proton-Systems for Energy Storage	Leroy Cronin	Engineering and Physical Sciences Research Council (EPSRC)	EP/R020914/1	Chemistry
300591	0	Programmable Molecular Metal Oxides (PMMOs) - From Fundamentals to Application	Leroy Cronin	Engineering and Physical Sciences Research Council (EPSRC)	EP/R01308X/1	Chemistry
61602	1	Energy and the Physical Sciences: Hydrogen Production using a Proton Electron Buffer	Leroy Cronin	Engineering and Physical Sciences Research Council (EPSRC)	EP/K023004/1	CHEM - CHEMISTRY
50329	5	Molecular-Metal-Oxide-nanoelectronicS (M-MOS): Achieving the Molecular Limit	Leroy Cronin	Engineering and Physical Sciences Research Council (EPSRC)	EP/H024107/1	CHEM - CHEMISTRY
56282	1	Innovative Manufacturing Research Centre for Continuous Manufacturing and Crystallisation (CMAC)	Leroy Cronin	Engineering and Physical Sciences Research Council (EPSRC)	EP/I033459/1	CHEM - CHEMISTRY
57739	1	Programmable Molecular Metal Oxides (PMMOs) - From Fundamentals to Application	Leroy Cronin	Engineering and Physical Sciences Research Council (EPSRC)	EP/J015156/1	CHEM - CHEMISTRY
68574	1	SMARTPOM: Artificial-Intelligence Driven Discovery and Synthesis of Polyoxometalate Clusters	Leroy Cronin	European Research Council (ERC)	670467	CHEM - CHEMISTRY