Multilayers consisting of a water soluble polythiophene derivative and Au nanoparticles have been deposited onto different electrode substrates by means of layer-by-layer deposition technique. The assembly of the films has been performed by taking advantage of the electrostatic interactions between the positively charged imidazolic moiety of the polythiophene chain and the negative charges of citrate ions surrounding Au nanoparticles, as well of the affinity of S to Au. The nanoparticles result stably grafted to the organic matrix. The resulting modified electrodes have been characterised through electrochemical, spectroelectrochemical and microscopic techniques. The results evidenced that a high number of individual nanoparticles is present inside the multilayer. The presence of nanoparticles is of chief importance for most effective charge percolation through the multilayer, as suggested by the responses to electroactive probe species in solution. The electrocatalytic performances of the modified electrodes have been tested with respect to the oxidation of ascorbic acid.

Layer-by-layer deposition of a polythiophene/Au nanoparticles multilayer with effective electrochemical properties / Zanfrognini, Barbara; Zanardi, Chiara; Terzi, Fabio; T., Aaritalo; A., Viinikanoja; J., Lukkari; Seeber, Renato. - In: JOURNAL OF SOLID STATE ELECTROCHEMISTRY. - ISSN 1432-8488. - STAMPA. - 15:11-12(2011), pp. 2395-2400. [10.1007/s10008-011-1479-4]

Layer-by-layer deposition of a polythiophene/Au nanoparticles multilayer with effective electrochemical properties

ZANFROGNINI, Barbara;ZANARDI, Chiara;TERZI, Fabio;SEEBER, Renato
2011

Abstract

Multilayers consisting of a water soluble polythiophene derivative and Au nanoparticles have been deposited onto different electrode substrates by means of layer-by-layer deposition technique. The assembly of the films has been performed by taking advantage of the electrostatic interactions between the positively charged imidazolic moiety of the polythiophene chain and the negative charges of citrate ions surrounding Au nanoparticles, as well of the affinity of S to Au. The nanoparticles result stably grafted to the organic matrix. The resulting modified electrodes have been characterised through electrochemical, spectroelectrochemical and microscopic techniques. The results evidenced that a high number of individual nanoparticles is present inside the multilayer. The presence of nanoparticles is of chief importance for most effective charge percolation through the multilayer, as suggested by the responses to electroactive probe species in solution. The electrocatalytic performances of the modified electrodes have been tested with respect to the oxidation of ascorbic acid.
2011
15
11-12
2395
2400
Layer-by-layer deposition of a polythiophene/Au nanoparticles multilayer with effective electrochemical properties / Zanfrognini, Barbara; Zanardi, Chiara; Terzi, Fabio; T., Aaritalo; A., Viinikanoja; J., Lukkari; Seeber, Renato. - In: JOURNAL OF SOLID STATE ELECTROCHEMISTRY. - ISSN 1432-8488. - STAMPA. - 15:11-12(2011), pp. 2395-2400. [10.1007/s10008-011-1479-4]
Zanfrognini, Barbara; Zanardi, Chiara; Terzi, Fabio; T., Aaritalo; A., Viinikanoja; J., Lukkari; Seeber, Renato
File in questo prodotto:
File Dimensione Formato  
45-JSolStEl-LbL-P3TOPIM-AuNP.PDF

Accesso riservato

Tipologia: Versione pubblicata dall'editore
Dimensione 404.65 kB
Formato Adobe PDF
404.65 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/673046
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 11
  • ???jsp.display-item.citation.isi??? 7
social impact