Nanochemistry in confined environments: Polyelectrolyte brush-assisted synthesis of gold nanoparticles inside ordered mesoporous thin films

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A robust and straightforward strategy allowing the controlled confinement of metal nanoparticles within the 3D framework of mesoporous films is presented. The chemical methodology is based on the inner surface modification of mesoporous silica films with polyelectrolyte brushes. We demonstrate that...

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Autores principales:	Calvo, A., Fuertes, M.C., Yameen, B., Williams, F.J., Azzaroni, O., Soler-Illia, G.J.A.A.
Formato:	JOUR
Materias:	Chemical reduction Confined environment Embedded nanoparticles Gold Nanoparticles Inner surfaces Macromolecular building blocks Mesoporous films Mesoporous silica film Mesoporous structures Metal nanoparticles Nano chemistry Nanobuilding blocks Nanoparticle precursors Ordered mesoporous Physicochemical characteristics Polyelectrolyte brushes Polymer brushes Pre-concentration Rational design Site selective Straightforward strategy Brushes Chemical modification Design Excitons Functional polymers Nanoparticles Optical properties Polyelectrolytes Silica Polymer films
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_07437463_v26_n8_p5559_Calvo
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_07437463_v26_n8_p5559_Calvo
record_format	dspace
spelling	todo:paper_07437463_v26_n8_p5559_Calvo2023-10-03T15:38:43Z Nanochemistry in confined environments: Polyelectrolyte brush-assisted synthesis of gold nanoparticles inside ordered mesoporous thin films Calvo, A. Fuertes, M.C. Yameen, B. Williams, F.J. Azzaroni, O. Soler-Illia, G.J.A.A. Chemical reduction Confined environment Embedded nanoparticles Gold Nanoparticles Inner surfaces Macromolecular building blocks Mesoporous films Mesoporous silica film Mesoporous structures Metal nanoparticles Nano chemistry Nanobuilding blocks Nanoparticle precursors Ordered mesoporous Physicochemical characteristics Polyelectrolyte brushes Polymer brushes Pre-concentration Rational design Site selective Straightforward strategy Brushes Chemical modification Design Excitons Functional polymers Nanoparticles Optical properties Polyelectrolytes Silica Polymer films A robust and straightforward strategy allowing the controlled confinement of metal nanoparticles within the 3D framework of mesoporous films is presented. The chemical methodology is based on the inner surface modification of mesoporous silica films with polyelectrolyte brushes. We demonstrate that the macromolecular building blocks significantly enhance the site-selective preconcentration of nanoparticle precursors in the inner environment of the mesoporous film. Then, chemical reduction of the preconcentrated precursors led to the formation of metal nanoparticles locally addressed in the mesoporous structure. We show that the synergy taking place between two versatile functional nanobuilding blocks (ordered mesocavities and polymer brushes) can produce stable embedded nanoparticles with tuned optical properties in a very simple manner. As a general framework, the strategy can be easily adapted to different sets of polymer brushes and mesoporous films in order to regulate the monomer?precursor interactions and, consequently, manipulate the site-selective character of the different chemistries taking place in the film. We consider that the "integrative chemistry" approach described in this work provides new pathways to manipulate the physicochemical characteristics of hybrid organic?inorganic advanced functional assemblies based on the rational design of chemistry and topology in confined environments. © 2010 American Chemical Society. Fil:Williams, F.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Soler-Illia, G.J.A.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_07437463_v26_n8_p5559_Calvo
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Chemical reduction Confined environment Embedded nanoparticles Gold Nanoparticles Inner surfaces Macromolecular building blocks Mesoporous films Mesoporous silica film Mesoporous structures Metal nanoparticles Nano chemistry Nanobuilding blocks Nanoparticle precursors Ordered mesoporous Physicochemical characteristics Polyelectrolyte brushes Polymer brushes Pre-concentration Rational design Site selective Straightforward strategy Brushes Chemical modification Design Excitons Functional polymers Nanoparticles Optical properties Polyelectrolytes Silica Polymer films
spellingShingle	Chemical reduction Confined environment Embedded nanoparticles Gold Nanoparticles Inner surfaces Macromolecular building blocks Mesoporous films Mesoporous silica film Mesoporous structures Metal nanoparticles Nano chemistry Nanobuilding blocks Nanoparticle precursors Ordered mesoporous Physicochemical characteristics Polyelectrolyte brushes Polymer brushes Pre-concentration Rational design Site selective Straightforward strategy Brushes Chemical modification Design Excitons Functional polymers Nanoparticles Optical properties Polyelectrolytes Silica Polymer films Calvo, A. Fuertes, M.C. Yameen, B. Williams, F.J. Azzaroni, O. Soler-Illia, G.J.A.A. Nanochemistry in confined environments: Polyelectrolyte brush-assisted synthesis of gold nanoparticles inside ordered mesoporous thin films
topic_facet	Chemical reduction Confined environment Embedded nanoparticles Gold Nanoparticles Inner surfaces Macromolecular building blocks Mesoporous films Mesoporous silica film Mesoporous structures Metal nanoparticles Nano chemistry Nanobuilding blocks Nanoparticle precursors Ordered mesoporous Physicochemical characteristics Polyelectrolyte brushes Polymer brushes Pre-concentration Rational design Site selective Straightforward strategy Brushes Chemical modification Design Excitons Functional polymers Nanoparticles Optical properties Polyelectrolytes Silica Polymer films
description	A robust and straightforward strategy allowing the controlled confinement of metal nanoparticles within the 3D framework of mesoporous films is presented. The chemical methodology is based on the inner surface modification of mesoporous silica films with polyelectrolyte brushes. We demonstrate that the macromolecular building blocks significantly enhance the site-selective preconcentration of nanoparticle precursors in the inner environment of the mesoporous film. Then, chemical reduction of the preconcentrated precursors led to the formation of metal nanoparticles locally addressed in the mesoporous structure. We show that the synergy taking place between two versatile functional nanobuilding blocks (ordered mesocavities and polymer brushes) can produce stable embedded nanoparticles with tuned optical properties in a very simple manner. As a general framework, the strategy can be easily adapted to different sets of polymer brushes and mesoporous films in order to regulate the monomer?precursor interactions and, consequently, manipulate the site-selective character of the different chemistries taking place in the film. We consider that the "integrative chemistry" approach described in this work provides new pathways to manipulate the physicochemical characteristics of hybrid organic?inorganic advanced functional assemblies based on the rational design of chemistry and topology in confined environments. © 2010 American Chemical Society.
format	JOUR
author	Calvo, A. Fuertes, M.C. Yameen, B. Williams, F.J. Azzaroni, O. Soler-Illia, G.J.A.A.
author_facet	Calvo, A. Fuertes, M.C. Yameen, B. Williams, F.J. Azzaroni, O. Soler-Illia, G.J.A.A.
author_sort	Calvo, A.
title	Nanochemistry in confined environments: Polyelectrolyte brush-assisted synthesis of gold nanoparticles inside ordered mesoporous thin films
title_short	Nanochemistry in confined environments: Polyelectrolyte brush-assisted synthesis of gold nanoparticles inside ordered mesoporous thin films
title_full	Nanochemistry in confined environments: Polyelectrolyte brush-assisted synthesis of gold nanoparticles inside ordered mesoporous thin films
title_fullStr	Nanochemistry in confined environments: Polyelectrolyte brush-assisted synthesis of gold nanoparticles inside ordered mesoporous thin films
title_full_unstemmed	Nanochemistry in confined environments: Polyelectrolyte brush-assisted synthesis of gold nanoparticles inside ordered mesoporous thin films
title_sort	nanochemistry in confined environments: polyelectrolyte brush-assisted synthesis of gold nanoparticles inside ordered mesoporous thin films
url	http://hdl.handle.net/20.500.12110/paper_07437463_v26_n8_p5559_Calvo
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Nanochemistry in confined environments: Polyelectrolyte brush-assisted synthesis of gold nanoparticles inside ordered mesoporous thin films

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