Double Direct Templated Hollow ZnS Microspheres Formed on Chemically Modified Silica Colloids

Autores
Son, Dongyeon; Wolosiuk, Alejandro; Braun, Paul V.
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The effect of surface chemistry of SiO2 colloids dispersed in a nonionic surfactant based lyotropic liquid crystal (LLC) on the double direct templating of hollow mesostructured ZnS capsules was investigated. In double direct templating, a LLC templates the mineralization of ZnS on the surface of a colloidal particle. Removal of the colloid results in a periodically mesostructured hollow capsule. After ZnS mineralization and a subsequent etching of the sacrificial SiO2 core, the ZnS mesostructure was imaged using transmission electron microscopy (TEM). The highest quality mesostructure was observed for poly(acrylic acid) (PAA) functionalized colloids, while other surface chemistries, including bare silica, poly(ethylene glycol), amine, and thiol surface chemistries yielded much less favorable results. In the PAA system, the order of the hexagonally arranged 3 nm mesopores in the ZnS shell closely matched that of the lyotropic liquid crystal template. Detailed TEM revealed the presence of regions where the mesopores lay parallel to the colloidal surface and others where they were perpendicularly arranged. We suspect the PAA functionalization favored both the nucleation of ZnS and organization of the LLC template responsible for templating mesostructured ZnS shell around the colloidal particle.
Fil: Son, Dongyeon. University of Illinois at Urbana; Estados Unidos
Fil: Wolosiuk, Alejandro. University of Illinois at Urbana; Estados Unidos. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Braun, Paul V.. University of Illinois at Urbana; Estados Unidos
Materia
mesoporous materials
liquid crystalls
ZnS
hollow spheres
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/244789
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/244789
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Double Direct Templated Hollow ZnS Microspheres Formed on Chemically Modified Silica ColloidsSon, DongyeonWolosiuk, AlejandroBraun, Paul V.mesoporous materialsliquid crystallsZnShollow sphereshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The effect of surface chemistry of SiO2 colloids dispersed in a nonionic surfactant based lyotropic liquid crystal (LLC) on the double direct templating of hollow mesostructured ZnS capsules was investigated. In double direct templating, a LLC templates the mineralization of ZnS on the surface of a colloidal particle. Removal of the colloid results in a periodically mesostructured hollow capsule. After ZnS mineralization and a subsequent etching of the sacrificial SiO2 core, the ZnS mesostructure was imaged using transmission electron microscopy (TEM). The highest quality mesostructure was observed for poly(acrylic acid) (PAA) functionalized colloids, while other surface chemistries, including bare silica, poly(ethylene glycol), amine, and thiol surface chemistries yielded much less favorable results. In the PAA system, the order of the hexagonally arranged 3 nm mesopores in the ZnS shell closely matched that of the lyotropic liquid crystal template. Detailed TEM revealed the presence of regions where the mesopores lay parallel to the colloidal surface and others where they were perpendicularly arranged. We suspect the PAA functionalization favored both the nucleation of ZnS and organization of the LLC template responsible for templating mesostructured ZnS shell around the colloidal particle.Fil: Son, Dongyeon. University of Illinois at Urbana; Estados UnidosFil: Wolosiuk, Alejandro. University of Illinois at Urbana; Estados Unidos. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Braun, Paul V.. University of Illinois at Urbana; Estados UnidosAmerican Chemical Society2009-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/244789Son, Dongyeon; Wolosiuk, Alejandro; Braun, Paul V.; Double Direct Templated Hollow ZnS Microspheres Formed on Chemically Modified Silica Colloids; American Chemical Society; Chemistry Of Materials; 21; 4; 12-2009; 628-6340897-4756CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/cm8017852info:eu-repo/semantics/altIdentifier/doi/10.1021/cm8017852info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:25:33Zoai:ri.conicet.gov.ar:11336/244789instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:25:33.623CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Double Direct Templated Hollow ZnS Microspheres Formed on Chemically Modified Silica Colloids
title Double Direct Templated Hollow ZnS Microspheres Formed on Chemically Modified Silica Colloids
spellingShingle Double Direct Templated Hollow ZnS Microspheres Formed on Chemically Modified Silica Colloids
Son, Dongyeon
mesoporous materials
liquid crystalls
ZnS
hollow spheres
title_short Double Direct Templated Hollow ZnS Microspheres Formed on Chemically Modified Silica Colloids
title_full Double Direct Templated Hollow ZnS Microspheres Formed on Chemically Modified Silica Colloids
title_fullStr Double Direct Templated Hollow ZnS Microspheres Formed on Chemically Modified Silica Colloids
title_full_unstemmed Double Direct Templated Hollow ZnS Microspheres Formed on Chemically Modified Silica Colloids
title_sort Double Direct Templated Hollow ZnS Microspheres Formed on Chemically Modified Silica Colloids
dc.creator.none.fl_str_mv Son, Dongyeon
Wolosiuk, Alejandro
Braun, Paul V.
author Son, Dongyeon
author_facet Son, Dongyeon
Wolosiuk, Alejandro
Braun, Paul V.
author_role author
author2 Wolosiuk, Alejandro
Braun, Paul V.
author2_role author
author
dc.subject.none.fl_str_mv mesoporous materials
liquid crystalls
ZnS
hollow spheres
topic mesoporous materials
liquid crystalls
ZnS
hollow spheres
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The effect of surface chemistry of SiO2 colloids dispersed in a nonionic surfactant based lyotropic liquid crystal (LLC) on the double direct templating of hollow mesostructured ZnS capsules was investigated. In double direct templating, a LLC templates the mineralization of ZnS on the surface of a colloidal particle. Removal of the colloid results in a periodically mesostructured hollow capsule. After ZnS mineralization and a subsequent etching of the sacrificial SiO2 core, the ZnS mesostructure was imaged using transmission electron microscopy (TEM). The highest quality mesostructure was observed for poly(acrylic acid) (PAA) functionalized colloids, while other surface chemistries, including bare silica, poly(ethylene glycol), amine, and thiol surface chemistries yielded much less favorable results. In the PAA system, the order of the hexagonally arranged 3 nm mesopores in the ZnS shell closely matched that of the lyotropic liquid crystal template. Detailed TEM revealed the presence of regions where the mesopores lay parallel to the colloidal surface and others where they were perpendicularly arranged. We suspect the PAA functionalization favored both the nucleation of ZnS and organization of the LLC template responsible for templating mesostructured ZnS shell around the colloidal particle.
Fil: Son, Dongyeon. University of Illinois at Urbana; Estados Unidos
Fil: Wolosiuk, Alejandro. University of Illinois at Urbana; Estados Unidos. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Braun, Paul V.. University of Illinois at Urbana; Estados Unidos
description The effect of surface chemistry of SiO2 colloids dispersed in a nonionic surfactant based lyotropic liquid crystal (LLC) on the double direct templating of hollow mesostructured ZnS capsules was investigated. In double direct templating, a LLC templates the mineralization of ZnS on the surface of a colloidal particle. Removal of the colloid results in a periodically mesostructured hollow capsule. After ZnS mineralization and a subsequent etching of the sacrificial SiO2 core, the ZnS mesostructure was imaged using transmission electron microscopy (TEM). The highest quality mesostructure was observed for poly(acrylic acid) (PAA) functionalized colloids, while other surface chemistries, including bare silica, poly(ethylene glycol), amine, and thiol surface chemistries yielded much less favorable results. In the PAA system, the order of the hexagonally arranged 3 nm mesopores in the ZnS shell closely matched that of the lyotropic liquid crystal template. Detailed TEM revealed the presence of regions where the mesopores lay parallel to the colloidal surface and others where they were perpendicularly arranged. We suspect the PAA functionalization favored both the nucleation of ZnS and organization of the LLC template responsible for templating mesostructured ZnS shell around the colloidal particle.
publishDate 2009
dc.date.none.fl_str_mv 2009-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/244789
Son, Dongyeon; Wolosiuk, Alejandro; Braun, Paul V.; Double Direct Templated Hollow ZnS Microspheres Formed on Chemically Modified Silica Colloids; American Chemical Society; Chemistry Of Materials; 21; 4; 12-2009; 628-634
0897-4756
CONICET Digital
CONICET
url http://hdl.handle.net/11336/244789
identifier_str_mv Son, Dongyeon; Wolosiuk, Alejandro; Braun, Paul V.; Double Direct Templated Hollow ZnS Microspheres Formed on Chemically Modified Silica Colloids; American Chemical Society; Chemistry Of Materials; 21; 4; 12-2009; 628-634
0897-4756
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/cm8017852
info:eu-repo/semantics/altIdentifier/doi/10.1021/cm8017852
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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