Photoluminescent 1−2 nm Sized Silicon Nanoparticles: A Surface- Dependent System
- Autores
- Romero, Juan José; Llansola-Portolés, Manuel J.; Dell'Arciprete, María Laura; Rodríguez, Hernán B.; Moore, Ana L.; González, Mónica 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.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas - Materia
-
Química
surface states
thermal quenching
Si/SiO2
interface
optical properties
surface chemistry - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/170194
Ver los metadatos del registro completo
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Photoluminescent 1−2 nm Sized Silicon Nanoparticles: A Surface- Dependent SystemRomero, Juan JoséLlansola-Portolés, Manuel J.Dell'Arciprete, María LauraRodríguez, Hernán B.Moore, Ana L.González, Mónica CristinaQuímicasurface statesthermal quenchingSi/SiO2interfaceoptical propertiessurface chemistryThe 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.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf3488–3498http://sedici.unlp.edu.ar/handle/10915/170194enginfo:eu-repo/semantics/altIdentifier/issn/1520-5002info:eu-repo/semantics/altIdentifier/doi/10.1021/cm401666ainfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:45:40Zoai:sedici.unlp.edu.ar:10915/170194Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:45:41.033SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Photoluminescent 1−2 nm Sized Silicon Nanoparticles: A Surface- Dependent System |
title |
Photoluminescent 1−2 nm Sized Silicon Nanoparticles: A Surface- Dependent System |
spellingShingle |
Photoluminescent 1−2 nm Sized Silicon Nanoparticles: A Surface- Dependent System Romero, Juan José Química surface states thermal quenching Si/SiO2 interface optical properties surface chemistry |
title_short |
Photoluminescent 1−2 nm Sized Silicon Nanoparticles: A Surface- Dependent System |
title_full |
Photoluminescent 1−2 nm Sized Silicon Nanoparticles: A Surface- Dependent System |
title_fullStr |
Photoluminescent 1−2 nm Sized Silicon Nanoparticles: A Surface- Dependent System |
title_full_unstemmed |
Photoluminescent 1−2 nm Sized Silicon Nanoparticles: A Surface- Dependent System |
title_sort |
Photoluminescent 1−2 nm Sized Silicon Nanoparticles: A Surface- Dependent System |
dc.creator.none.fl_str_mv |
Romero, Juan José Llansola-Portolés, Manuel J. Dell'Arciprete, María Laura Rodríguez, Hernán B. Moore, Ana L. González, Mónica Cristina |
author |
Romero, Juan José |
author_facet |
Romero, Juan José Llansola-Portolés, Manuel J. Dell'Arciprete, María Laura Rodríguez, Hernán B. Moore, Ana L. González, Mónica Cristina |
author_role |
author |
author2 |
Llansola-Portolés, Manuel J. Dell'Arciprete, María Laura Rodríguez, Hernán B. Moore, Ana L. González, Mónica Cristina |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Química surface states thermal quenching Si/SiO2 interface optical properties surface chemistry |
topic |
Química surface states thermal quenching Si/SiO2 interface optical properties surface chemistry |
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. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas |
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 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo 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://sedici.unlp.edu.ar/handle/10915/170194 |
url |
http://sedici.unlp.edu.ar/handle/10915/170194 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/1520-5002 info:eu-repo/semantics/altIdentifier/doi/10.1021/cm401666a |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
dc.format.none.fl_str_mv |
application/pdf 3488–3498 |
dc.source.none.fl_str_mv |
reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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