Photoluminescent 1-2 nm size silicon nanoparticles: A surface-dependent system

Autores
Romero, Juan José; Llansola Portolés, Manuel Jose; Dell'Arciprete, Maria Laura; Rodriguez, Hernan Bernardo; Moore, Ana L.; Gonzalez, Monica Cristina
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The effect of derivatization and temperature on the photoluminescence of 1–2 nm size silicon particles of different origin is investigated in an attempt to understand the effect of surface on the particles’ photoluminescence. To this purpose, silicon nanoparticles were synthesized by electrochemical (top-down) and wet chemical (bottom-up) procedures. Further derivatization by silylation or sylanization yielded particles with ≡Si—C≡, ≡Si—O—Si≡, and ≡Si—O—C≡ groups at the interface. A detailed analysis of the corresponding excitation–emission matrices strongly indicates that different surface atomic arrangements contribute to the energy gap. In particular, particles with ≡Si—O—Si≡ groups at the interface show photoluminescence independent of the crystalline structure and on their further surface derivatization with different organic molecules. The lifetime and spectrum shape of all synthesized particles are invariable to changes in temperature in the range 270–330 K despite a significant reduction in the photoluminescence intensity being observed with increasing temperature; such behavior supports a thermal equilibrium between dark and bright conformations of the particles. The observed results are of importance for optimizing the use of silicon nanoparticles as optical sensors and therapeutic agents in biological systems.
Fil: Romero, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Llansola Portolés, Manuel Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Dell'Arciprete, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Rodriguez, Hernan Bernardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Moore, Ana L. . Arizona State University; Estados Unidos
Fil: Gonzalez, Monica Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Materia
Surface States
Thermal Quenching
Si/Sio2 Interface
Optical Properties
Surface Chemistry
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:11336/5254
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/5254
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Photoluminescent 1-2 nm size silicon nanoparticles: A surface-dependent systemRomero, Juan JoséLlansola Portolés, Manuel JoseDell'Arciprete, Maria LauraRodriguez, Hernan BernardoMoore, Ana L. Gonzalez, Monica CristinaSurface StatesThermal QuenchingSi/Sio2 InterfaceOptical PropertiesSurface Chemistryhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The effect of derivatization and temperature on the photoluminescence of 1–2 nm size silicon particles of different origin is investigated in an attempt to understand the effect of surface on the particles’ photoluminescence. To this purpose, silicon nanoparticles were synthesized by electrochemical (top-down) and wet chemical (bottom-up) procedures. Further derivatization by silylation or sylanization yielded particles with ≡Si—C≡, ≡Si—O—Si≡, and ≡Si—O—C≡ groups at the interface. A detailed analysis of the corresponding excitation–emission matrices strongly indicates that different surface atomic arrangements contribute to the energy gap. In particular, particles with ≡Si—O—Si≡ groups at the interface show photoluminescence independent of the crystalline structure and on their further surface derivatization with different organic molecules. The lifetime and spectrum shape of all synthesized particles are invariable to changes in temperature in the range 270–330 K despite a significant reduction in the photoluminescence intensity being observed with increasing temperature; such behavior supports a thermal equilibrium between dark and bright conformations of the particles. The observed results are of importance for optimizing the use of silicon nanoparticles as optical sensors and therapeutic agents in biological systems.Fil: Romero, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; ArgentinaFil: Llansola Portolés, Manuel Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; ArgentinaFil: Dell'Arciprete, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; ArgentinaFil: Rodriguez, Hernan Bernardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; ArgentinaFil: Moore, Ana L. . Arizona State University; Estados UnidosFil: Gonzalez, Monica Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; ArgentinaAmerican Chemical Society2013-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5254Romero, Juan José; Llansola Portolés, Manuel Jose; Dell'Arciprete, Maria Laura; Rodriguez, Hernan Bernardo; Moore, Ana L. ; et al.; Photoluminescent 1-2 nm size silicon nanoparticles: A surface-dependent system; American Chemical Society; Chemistry Of Materials; 25; 17; 8-2013; 3488-34980897-4756enginfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/cm401666ainfo:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/doi/10.1021/cm401666ainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:40:37Zoai:ri.conicet.gov.ar:11336/5254instacron: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 09:40:37.874CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Photoluminescent 1-2 nm size silicon nanoparticles: A surface-dependent system
title Photoluminescent 1-2 nm size silicon nanoparticles: A surface-dependent system
spellingShingle Photoluminescent 1-2 nm size silicon nanoparticles: A surface-dependent system
Romero, Juan José
Surface States
Thermal Quenching
Si/Sio2 Interface
Optical Properties
Surface Chemistry
title_short Photoluminescent 1-2 nm size silicon nanoparticles: A surface-dependent system
title_full Photoluminescent 1-2 nm size silicon nanoparticles: A surface-dependent system
title_fullStr Photoluminescent 1-2 nm size silicon nanoparticles: A surface-dependent system
title_full_unstemmed Photoluminescent 1-2 nm size silicon nanoparticles: A surface-dependent system
title_sort Photoluminescent 1-2 nm size silicon nanoparticles: A surface-dependent system
dc.creator.none.fl_str_mv Romero, Juan José
Llansola Portolés, Manuel Jose
Dell'Arciprete, Maria Laura
Rodriguez, Hernan Bernardo
Moore, Ana L.
Gonzalez, Monica Cristina
author Romero, Juan José
author_facet Romero, Juan José
Llansola Portolés, Manuel Jose
Dell'Arciprete, Maria Laura
Rodriguez, Hernan Bernardo
Moore, Ana L.
Gonzalez, Monica Cristina
author_role author
author2 Llansola Portolés, Manuel Jose
Dell'Arciprete, Maria Laura
Rodriguez, Hernan Bernardo
Moore, Ana L.
Gonzalez, Monica Cristina
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Surface States
Thermal Quenching
Si/Sio2 Interface
Optical Properties
Surface Chemistry
topic Surface States
Thermal Quenching
Si/Sio2 Interface
Optical Properties
Surface Chemistry
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 derivatization and temperature on the photoluminescence of 1–2 nm size silicon particles of different origin is investigated in an attempt to understand the effect of surface on the particles’ photoluminescence. To this purpose, silicon nanoparticles were synthesized by electrochemical (top-down) and wet chemical (bottom-up) procedures. Further derivatization by silylation or sylanization yielded particles with ≡Si—C≡, ≡Si—O—Si≡, and ≡Si—O—C≡ groups at the interface. A detailed analysis of the corresponding excitation–emission matrices strongly indicates that different surface atomic arrangements contribute to the energy gap. In particular, particles with ≡Si—O—Si≡ groups at the interface show photoluminescence independent of the crystalline structure and on their further surface derivatization with different organic molecules. The lifetime and spectrum shape of all synthesized particles are invariable to changes in temperature in the range 270–330 K despite a significant reduction in the photoluminescence intensity being observed with increasing temperature; such behavior supports a thermal equilibrium between dark and bright conformations of the particles. The observed results are of importance for optimizing the use of silicon nanoparticles as optical sensors and therapeutic agents in biological systems.
Fil: Romero, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Llansola Portolés, Manuel Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Dell'Arciprete, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Rodriguez, Hernan Bernardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Moore, Ana L. . Arizona State University; Estados Unidos
Fil: Gonzalez, Monica Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
description The effect of derivatization and temperature on the photoluminescence of 1–2 nm size silicon particles of different origin is investigated in an attempt to understand the effect of surface on the particles’ photoluminescence. To this purpose, silicon nanoparticles were synthesized by electrochemical (top-down) and wet chemical (bottom-up) procedures. Further derivatization by silylation or sylanization yielded particles with ≡Si—C≡, ≡Si—O—Si≡, and ≡Si—O—C≡ groups at the interface. A detailed analysis of the corresponding excitation–emission matrices strongly indicates that different surface atomic arrangements contribute to the energy gap. In particular, particles with ≡Si—O—Si≡ groups at the interface show photoluminescence independent of the crystalline structure and on their further surface derivatization with different organic molecules. The lifetime and spectrum shape of all synthesized particles are invariable to changes in temperature in the range 270–330 K despite a significant reduction in the photoluminescence intensity being observed with increasing temperature; such behavior supports a thermal equilibrium between dark and bright conformations of the particles. The observed results are of importance for optimizing the use of silicon nanoparticles as optical sensors and therapeutic agents in biological systems.
publishDate 2013
dc.date.none.fl_str_mv 2013-08
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/11336/5254
Romero, Juan José; Llansola Portolés, Manuel Jose; Dell'Arciprete, Maria Laura; Rodriguez, Hernan Bernardo; Moore, Ana L. ; et al.; Photoluminescent 1-2 nm size silicon nanoparticles: A surface-dependent system; American Chemical Society; Chemistry Of Materials; 25; 17; 8-2013; 3488-3498
0897-4756
url http://hdl.handle.net/11336/5254
identifier_str_mv Romero, Juan José; Llansola Portolés, Manuel Jose; Dell'Arciprete, Maria Laura; Rodriguez, Hernan Bernardo; Moore, Ana L. ; et al.; Photoluminescent 1-2 nm size silicon nanoparticles: A surface-dependent system; American Chemical Society; Chemistry Of Materials; 25; 17; 8-2013; 3488-3498
0897-4756
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/cm401666a
info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/doi/10.1021/cm401666a
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
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 13.070432

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