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Adaptable Multivalent Hairy Inorganic Nanoparticles
Journal article

Adaptable Multivalent Hairy Inorganic Nanoparticles

Caleb A. Bohannon, Andrew J. Chancellor, Michael T. Kelly, Tram T. Le, Lei Zhu, Christopher Y. Li and Bin Zhao
Journal of the American Chemical Society, v 143(41), pp 16919-16924
20 Oct 2021
PMID: 34623815

Abstract

Chemistry Chemistry, Multidisciplinary Physical Sciences Science & Technology
We report a polymer brush-based approach for fabricating multivalent patchy nanoparticles (NPs) with the number of nanodomains (valency) from 6 to 10, potentially from 1 to 10, by exploiting the lateral microphase separation of binary mixed homopolymer brushes grafted on NPs with a radius comparable to the polymer sizes. Well-defined mixed brushes were grown on 20.4 nm silica NPs by two-step surface-initiated reversible deactivation radical polymerizations and microphase separated laterally upon casting from a good solvent, producing multivalent NPs on 2D surfaces. A linear relationship between valency and average core size for the corresponding valency was observed. The mixed brush NPs exhibited abilities to form "bonds" through the overlap of nanodomains and to change the valency when interacting with adjacent NPs. This method could open up a new avenue for studying patchy NPs.

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Collaboration types
Domestic collaboration
Web of Science research areas
Chemistry, Multidisciplinary
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