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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/244789
Ver los metadatos del registro completo
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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 Técnicas2025-09-29T09:36:43Zoai: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:34982025-09-29 09:36:43.861CONICET 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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13.070432 |