Real-Time Monitoring and Control of Nanoparticle Formation

Abstact

Methods capable of controlling synthesis at the level of an individual nanoparticle are a key step toward improved reproducibility and scalability in engineering complex nanomaterials. To address this, we combine the spatially patterned activation of the photoreductant sodium pyruvate with interferometric scattering microscopy to achieve fast, label-free monitoring and control of hundreds of gold nanoparticles in real time. Individual particle growth kinetics are well-described by a two-step nucleation–autocatalysis model but with a distribution of individual rate constants that change with reaction conditions.

Spatiotemporal photocontrol of AuNP growth.

Author(s) & Affilation(s)

Yujie Guo¹, Vivien Walter², Steven Vanuytsel¹, Christopher Parperis¹, Jason T. Sengel¹, Eve E. Weatherill¹, and Mark I. Wallace¹

1. Department of Chemistry, King’s College London, Britannia House, 7 Trinity Street, London, UK
2. Department of Engineering, King’s College London, Strand, London, UK

Cite this publication

Guo et al., Real-Time Monitoring and Control of Nanoparticle Formation, JACS 2023

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