Gold nanoparticles modified GC electrodes: electrochemical behaviour dependence of different neurotransmitters and molecules of biological interest on the particles size and shape (Articolo in rivista)

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  • Gold nanoparticles modified GC electrodes: electrochemical behaviour dependence of different neurotransmitters and molecules of biological interest on the particles size and shape (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s11051-008-9547-0 (literal)
Alternative label
  • Caschera Daniela (1); Federici Fulvio (1) ; Zane Daniela (2); Focanti Francesca (2); Curulli Antonella (2); Padeletti Giuseppina (1); (2009)
    Gold nanoparticles modified GC electrodes: electrochemical behaviour dependence of different neurotransmitters and molecules of biological interest on the particles size and shape
    in Journal of nanoparticle research; Springer, Dordrecht (Paesi Bassi)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Caschera Daniela (1); Federici Fulvio (1) ; Zane Daniela (2); Focanti Francesca (2); Curulli Antonella (2); Padeletti Giuseppina (1); (literal)
Pagina inizio
  • 1925 (literal)
Pagina fine
  • 1936 (literal)
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  • http://www.springerlink.com/content/q18727814j2q/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 11 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 12 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 8 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) ISMN-CNR, Via Salaria Km 29,300, 00016, Monterotondo Scalo, Roma, Italy; 2) ISMN-CNR, Via Castro Laurenziano 7, Rome, Italy; (literal)
Titolo
  • Gold nanoparticles modified GC electrodes: electrochemical behaviour dependence of different neurotransmitters and molecules of biological interest on the particles size and shape (literal)
Abstract
  • Gold colloidal nanoparticles (AuNps), synthesized by gold chloride hydrate (HAuCl4) chemical reduction were used to realize a modified glassy carbon electrode (GCE). Different shapes and sizes were observed, varying the molar ratio of HAuCl4 and polyvinylpyrrolidone (PVP). The electrochemical behaviour of different neurotransmitters and molecules of biological interest (dopamine, caffeic acid, catechol, uric acid, epinephrine and serotonin) were investigated by cyclic voltammetry (CV) at the AuNps modified GCE and a dependence of the electrochemical response on the size and the shape of the particles was observed. The electrochemical responses were stable during time with a generic decreasing of the peak current after 10 days ranging from 5-10% for catechol, uric acid and serotonine to 10-15% for the other analytes. A study on the electrochemical interface of modified electrodes was also carried out by means of electrochemical impedance spectroscopy (EIS). (literal)
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