Adaptable Multivalent Hairy Inorganic Nanoparticles

Adaptable Multivalent Hairy Inorganic Nanoparticles

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...

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Veröffentlicht in:Journal of the American Chemical Society 2021-10, Vol.143 (41), p.16919-16924
Hauptverfasser: Bohannon, Caleb A, Chancellor, Andrew J, Kelly, Michael T, Le, Tram T, Zhu, Lei, Li, Christopher Y, Zhao, Bin
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container_end_page 16924
container_issue 41
container_start_page 16919
container_title Journal of the American Chemical Society
container_volume 143
creator Bohannon, Caleb A
Chancellor, Andrew J
Kelly, Michael T
Le, Tram T
Zhu, Lei
Li, Christopher Y
Zhao, Bin
description 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.
doi_str_mv 10.1021/jacs.1c08261
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