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Harnessing nonlinear rubber swelling for bulk synthesis of anisotropic hybrid nanoparticles

Asymmetric hybrid nanoparticles are at the forefront of colloidal chemistry as building blocks for novel structures and applications, as well as for exploring fundamental ways of breaking symmetry in physical systems. Current methods of synthesis have significant limitations in terms of control over...

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Detalles Bibliográficos
Autores principales: Ding, Tao, Smoukov, Stoyan K., Baumberg, Jeremy J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4894071/
https://www.ncbi.nlm.nih.gov/pubmed/27358735
http://dx.doi.org/10.1039/c4tc01660b
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author Ding, Tao
Smoukov, Stoyan K.
Baumberg, Jeremy J.
author_facet Ding, Tao
Smoukov, Stoyan K.
Baumberg, Jeremy J.
author_sort Ding, Tao
collection PubMed
description Asymmetric hybrid nanoparticles are at the forefront of colloidal chemistry as building blocks for novel structures and applications, as well as for exploring fundamental ways of breaking symmetry in physical systems. Current methods of synthesis have significant limitations in terms of control over synthesis, particle size ranges and polydispersity. We report a facile and scalable synthesis based on the anisotropic swelling of rubber to obtain metal–(polymer rubber) hybrid nanoparticles. Initial Au nanoparticle (NP) seeds are grown larger by reducing HAuCl(4) with divinyl benzene (DVB), while simultaneous radical polymerization of DVB forms a cross-linked rubber layer of PDVB on the Au NP surface. The propensity of rubber to swell nonlinearly in the presence of DVB monomers amplifies initial asymmetries to break the symmetry of the PDVB shell, causing growth of asymmetric protrusions on one side of the core–shell particles, which are fixed by further polymerization. Plasmonic absorption of Au allows us to follow the Au reduction reaction and also suggests potential applications of some of the asymmetric particles in plasmon-enhanced sensing. The polydispersity, determined statistically from TEM and SEM images, of the resulting particles is low (<10%) and their sizes, shapes and metal–polymer ratios are easily tunable.
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spelling pubmed-48940712016-06-27 Harnessing nonlinear rubber swelling for bulk synthesis of anisotropic hybrid nanoparticles Ding, Tao Smoukov, Stoyan K. Baumberg, Jeremy J. J Mater Chem C Mater Opt Electron Devices Chemistry Asymmetric hybrid nanoparticles are at the forefront of colloidal chemistry as building blocks for novel structures and applications, as well as for exploring fundamental ways of breaking symmetry in physical systems. Current methods of synthesis have significant limitations in terms of control over synthesis, particle size ranges and polydispersity. We report a facile and scalable synthesis based on the anisotropic swelling of rubber to obtain metal–(polymer rubber) hybrid nanoparticles. Initial Au nanoparticle (NP) seeds are grown larger by reducing HAuCl(4) with divinyl benzene (DVB), while simultaneous radical polymerization of DVB forms a cross-linked rubber layer of PDVB on the Au NP surface. The propensity of rubber to swell nonlinearly in the presence of DVB monomers amplifies initial asymmetries to break the symmetry of the PDVB shell, causing growth of asymmetric protrusions on one side of the core–shell particles, which are fixed by further polymerization. Plasmonic absorption of Au allows us to follow the Au reduction reaction and also suggests potential applications of some of the asymmetric particles in plasmon-enhanced sensing. The polydispersity, determined statistically from TEM and SEM images, of the resulting particles is low (<10%) and their sizes, shapes and metal–polymer ratios are easily tunable. Royal Society of Chemistry 2014-11-07 2014-09-19 /pmc/articles/PMC4894071/ /pubmed/27358735 http://dx.doi.org/10.1039/c4tc01660b Text en This journal is © The Royal Society of Chemistry 2014 http://creativecommons.org/licenses/by/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution 3.0 Unported License (http://creativecommons.org/licenses/by/3.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Chemistry
Ding, Tao
Smoukov, Stoyan K.
Baumberg, Jeremy J.
Harnessing nonlinear rubber swelling for bulk synthesis of anisotropic hybrid nanoparticles
title Harnessing nonlinear rubber swelling for bulk synthesis of anisotropic hybrid nanoparticles
title_full Harnessing nonlinear rubber swelling for bulk synthesis of anisotropic hybrid nanoparticles
title_fullStr Harnessing nonlinear rubber swelling for bulk synthesis of anisotropic hybrid nanoparticles
title_full_unstemmed Harnessing nonlinear rubber swelling for bulk synthesis of anisotropic hybrid nanoparticles
title_short Harnessing nonlinear rubber swelling for bulk synthesis of anisotropic hybrid nanoparticles
title_sort harnessing nonlinear rubber swelling for bulk synthesis of anisotropic hybrid nanoparticles
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4894071/
https://www.ncbi.nlm.nih.gov/pubmed/27358735
http://dx.doi.org/10.1039/c4tc01660b
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