Real-Time Monitoring and Control of Nanoparticle Formation

Yujie Guo, Vivien Walter, Steven Vanuytsel, Christopher Parperis, Jason T. Sengel, Eve E. Weatherill, Mark I. Wallace*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)15809-15815
Number of pages7
JournalJournal of the American Chemical Society
Volume145
Issue number29
DOIs
Publication statusPublished - 26 Jul 2023

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