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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics

IF: 2.89
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Multifunctional Janus Particles Composed of Inorganic Nanoparticles through Emulsion Confined Assembly

Published:5 December 2024 DOI: 10.1039/d4cp03699a
Xuan Yue, Feibo Li, Xiying Fu, Yanming Wang, Nan Yan

Abstract

Janus particles, consisting of two or more chemically distinct composites within a single structural system, have attracted significant attention for their solid surfactant functionality, as well as their potential applications in micro/nanomotors and functional materials. Here, we present a simple and robust method to prepare plasmonic Janus particles consisting of a polystyrene-tethered gold nanorod (AuNRs@PS) head and a poly(4-vinylpyridine) (P4VP) head through emulsion confined assembly. The balance of the Janus particles can be finely tunable by adjusting the volume ratio of the AuNRs@PS solution and P4VP solution. The result shows that the diameter ratio (r) of AuNRs@PS5k/P4VP is proportional to the volume ratio (R) of the AuNRs@PS and P4VP solutions. Furthermore, the obtained Janus particles with AuNR head have peak absorbance around 800 nm, which can be applied in photothermal therapy. Additionally, multifunctionality can be achieved by reducing nanoparticle (NP) precursors on a prefabricated scaffold of P4VP or co-assembling P4VP-tethered NPs with AuNRs@PS building blocks. These multifunctional Janus particles hold great potential for applications in micro/nanomotors, catalysts, and biological materials.

Substances (4)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Citric acid 77-92-9 C6H8O7 2071 suppliers $5.00-$2290.00
Ascorbic Acid 50-81-7 C6H8O6 1970 suppliers $6.00-$2380.00
Hexadecyl trimethyl ammonium bromide 57-09-0 C19H42BrN 976 suppliers $4.00-$19422.00
Sodium citrate 68-04-2 C6H9NaO7 833 suppliers $6.00-$1168.20

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