Gold nanoparticles enhancing dismutation of superoxide radical by its bis(dithiocarbamato)copper(II) shell.
Inorg Chem
; 50(11): 4705-12, 2011 Jun 06.
Article
em En
| MEDLINE
| ID: mdl-21520892
In the past few years three topics in nanoscience have received great attention: catalytic activity of gold nanoparticles (AuNPs), their electron transfer properties, and magnetism. Although these properties could have much in common no report on their synergism has been published. Here we present 10-nm gold nanoparticles conveniently capped with a mixed self-assembled monolayer containing bis(dithiocarbamato)copper(II) complexes, which dismutate superoxide radical with extremely high efficiency (IC(50) = 0.074 µM). This behavior is interpreted as the result of an electron transfer (ET) process between AuNP core and the analyte when associated to copper(II). The ET process involving a charged AuNP core was detected by EPR and UV-vis spectroscopy.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Compostos Organometálicos
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Tiocarbamatos
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Superóxidos
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Cobre
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Nanopartículas Metálicas
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Ouro
Idioma:
En
Revista:
Inorg Chem
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Cuba
País de publicação:
Estados Unidos