Luminescence properties and ROS generation of magnetic porous silicon nanoparticles

Magnetite‒Porous Silicon 100−150 nm size nanoparticles (MPSi) were obtained combining luminescent and magnetic properties from silicon and magnetite, respectively. MPSi hybrids were characterized by high-resolution transmission electron microscopy, atomic and magnetic force microscopy and X-ray phot...

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Autores principales: Caregnato, Paula, David Gara, Pedro Maximiliano, Prieto, Eduardo Daniel, González, Mónica Cristina
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2020
Materias:
Física
Química
Porous Silicon
Magnetite
Luminescence emission
ROS generation
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/139230
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-139230
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Química
Porous Silicon
Magnetite
Luminescence emission
ROS generation
spellingShingle Física
Química
Porous Silicon
Magnetite
Luminescence emission
ROS generation
Caregnato, Paula
David Gara, Pedro Maximiliano
Prieto, Eduardo Daniel
González, Mónica Cristina
Luminescence properties and ROS generation of magnetic porous silicon nanoparticles
topic_facet Física
Química
Porous Silicon
Magnetite
Luminescence emission
ROS generation
description Magnetite‒Porous Silicon 100−150 nm size nanoparticles (MPSi) were obtained combining luminescent and magnetic properties from silicon and magnetite, respectively. MPSi hybrids were characterized by high-resolution transmission electron microscopy, atomic and magnetic force microscopy and X-ray photoelectron spectroscopy. The presence of magnetite quenches statically visible luminescence of Porous Silicon toluene suspensions. Whereas MPSi, maintain the luminescence in the 300−450 nm spectral region. Particles retained the capacity for singlet oxygen and superoxide radical ion generation (Reactive Oxygen Species, ROS). However quantum yield singlet oxygen generation is much lower than the PSi analogues and superoxide radical ion concentration dismiss when magnetite is incorporated in the PSi matrix. Silanization of Porous Silicon and MPSi yield nanoparticles with − SH terminal groups with unique luminescence properties.
format Articulo
Preprint
author Caregnato, Paula
David Gara, Pedro Maximiliano
Prieto, Eduardo Daniel
González, Mónica Cristina
author_facet Caregnato, Paula
David Gara, Pedro Maximiliano
Prieto, Eduardo Daniel
González, Mónica Cristina
author_sort Caregnato, Paula
title Luminescence properties and ROS generation of magnetic porous silicon nanoparticles
title_short Luminescence properties and ROS generation of magnetic porous silicon nanoparticles
title_full Luminescence properties and ROS generation of magnetic porous silicon nanoparticles
title_fullStr Luminescence properties and ROS generation of magnetic porous silicon nanoparticles
title_full_unstemmed Luminescence properties and ROS generation of magnetic porous silicon nanoparticles
title_sort luminescence properties and ros generation of magnetic porous silicon nanoparticles
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/139230
work_keys_str_mv AT caregnatopaula luminescencepropertiesandrosgenerationofmagneticporoussiliconnanoparticles
AT davidgarapedromaximiliano luminescencepropertiesandrosgenerationofmagneticporoussiliconnanoparticles
AT prietoeduardodaniel luminescencepropertiesandrosgenerationofmagneticporoussiliconnanoparticles
AT gonzalezmonicacristina luminescencepropertiesandrosgenerationofmagneticporoussiliconnanoparticles
bdutipo_str Repositorios
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