Arresting the time-dependent H2O2 mediated synthesis of gold nanoparticles for analytical detection and preparative chemistry

Pierangelo Gobbo; Mia J. Biondi; Jordan J. Feld; Mark S. Workentin

doi:10.1039/C3TB20913J

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Arresting the time-dependent H₂O₂ mediated synthesis of gold nanoparticles for analytical detection and preparative chemistry†

Pierangelo Gobbo,‡^a Mia J. Biondi,‡^ab Jordan J. Feld^b and Mark S. Workentin*^a

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* Corresponding authors

^a The University of Western Ontario and the Centre for Materials and Biomaterials Research, Richmond Street, London, Ontario, Canada
E-mail: mworkent@uwo.ca
Tel: +1 519-661-2111 extn. 86319

^b Toronto Western Hospital, University Health Network, McLauglin-Rotman Centre for Global Health, University of Toronto, Canada

Abstract

The time-dependent progression from gold nanosponges (AuNS) to discrete small gold nanoparticles (AuNPs) mediated by H₂O₂ in MES buffer is blocked by the addition of a thiol, glutathione. This represents an important improvement for the plasmonic ELISA, and also leads to a time-dependent approach for the synthesis of AuNS and AuNPs in water with precise control over nanostructure size.

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Article information

DOI: https://doi.org/10.1039/C3TB20913J
Article type: Communication
Submitted: 28 Jun 2013
Accepted: 10 Jul 2013
First published: 11 Jul 2013

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J. Mater. Chem. B, 2013,1, 4048-4051

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Arresting the time-dependent H₂O₂ mediated synthesis of gold nanoparticles for analytical detection and preparative chemistry

P. Gobbo, M. J. Biondi, J. J. Feld and M. S. Workentin, J. Mater. Chem. B, 2013, 1, 4048 DOI: 10.1039/C3TB20913J

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Journal of Materials Chemistry B