Please use this identifier to cite or link to this item: https://doi.org/10.1038/s41467-017-00970-1
Title: Understanding seed-mediated growth of gold nanoclusters at molecular level
Authors: Yao, Q 
Yuan, X
Fung, V
Yu, Y
Leong, D.T 
Jiang, D.-E
Xie, J 
Keywords: gold nanoparticle
chemical reaction
electron
gold
molecular analysis
nanoparticle
nanotechnology
Article
electron
growth
molecular evolution
molecular size
nanochemistry
reaction analysis
Issue Date: 2017
Publisher: Nature Publishing Group
Citation: Yao, Q, Yuan, X, Fung, V, Yu, Y, Leong, D.T, Jiang, D.-E, Xie, J (2017). Understanding seed-mediated growth of gold nanoclusters at molecular level. Nature Communications 8 (1) : 927. ScholarBank@NUS Repository. https://doi.org/10.1038/s41467-017-00970-1
Abstract: The continuous development of total synthesis chemistry has allowed many organic and biomolecules to be produced with known synthetic history-that is, a complete set of step reactions in their synthetic routes. Here, we extend such molecular-level precise reaction routes to nanochemistry, particularly to a seed-mediated synthesis of inorganic nanoparticles. By systematically investigating the time-dependent abundance of 35 intermediate species in total, we map out relevant step reactions in a model size growth reaction from molecularly pure Au 25 to Au 44 nanoparticles. The size growth of Au nanoparticles involves two different size-evolution processes (monotonic LaMer growth and volcano-shaped aggregative growth), which are driven by a sequential 2-electron boosting of the valence electron count of Au nanoparticles. Such fundamental findings not only provide guiding principles to produce other sizes of Au nanoparticles (e.g., Au 38 ), but also represent molecular-level insights on long-standing puzzles in nanochemistry, including LaMer growth, aggregative growth, and digestive ripening. © 2017 The Author(s).
Source Title: Nature Communications
URI: https://scholarbank.nus.edu.sg/handle/10635/174395
ISSN: 2041-1723
DOI: 10.1038/s41467-017-00970-1
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