Imaging the polymerization of multivalent nanoparticles in solution

Kim, Juyeong; Ou, Zihao; Jones, Matthew R.; Song, Xiaohui; Chen, Qian

doi:10.1038/s41467-017-00857-1

Title: Imaging the polymerization of multivalent nanoparticles in solution

Journal Article · Mon Oct 02 00:00:00 EDT 2017 · Nature Communications

DOI:https://doi.org/10.1038/s41467-017-00857-1· OSTI ID:1499672

Kim, Juyeong ^[1];

^[1];

^[2]; Song, Xiaohui ^[1];

^[1]

Univ. of Illinois, Urbana, IL (United States)
Rice Univ., Houston, TX (United States)

Numerous mechanisms have been studied for chemical reactions to provide quantitative predictions on how atoms spatially arrange into molecules. In nanoscale colloidal systems, however, less is known about the physical rules governing their spatial organization, i.e., sel-fassembly, into functional materials. Here, we monitor real-time self-assembly dynamics at the single nanoparticle level, which reveal marked similarities to foundational principles of polymerization. Specifically, using the prototypical system of gold triangular nanoprisms, we show that colloidal self-assembly is analogous to polymerization in three aspects: ensemble growth statistics following models for step-growth polymerization, with nanoparticles as linkable “monomers”; bond angles determined by directional internanoparticle interactions; and product topology determined by the valency of monomeric units. Liquid-phase transmission electron microscopy imaging and theoretical modeling elucidate the nanometer-scale mechanisms for these polymer-like phenomena in nanoparticle systems. Furthermore, the results establish a quantitative conceptual framework for self-assembly dynamics that can aid in designing future nanoparticle-based materials.

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Research Organization:: Univ. of Illinois at Urbana-Champaign, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division

Grant/Contract Number:: FG02-07ER46471

OSTI ID:: 1499672

Journal Information:: Nature Communications, Vol. 8, Issue 1; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 61 works

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