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- Title
Synthesis and electro-optical characterization of new conducting PEDOT/Au-nanorods nanocomposites.
- Authors
Salsamendi, Maitane; Abad, Jose; Marcilla, Rebeca; Pozo‐Gonzalo, Cristina; Urbina, Antonio; Grande, Hans; Colchero, Jaime; Mecerreyes, David
- Abstract
This paper describes a new strategy to obtain PEDOT/Au-nanorods nanocomposites with different PEDOT: Au ratio. A polymeric ionic liquid (PIL) was used as stabilizer during the chemical synthesis of PEDOT dispersions. PEDOT/Au-nanorods dispersions in organic media were obtained. Electrochemical characterization of PEDOT/Au-nanorods nanocomposites revealed that the addition of Au nanorods modified the electroactivity of the conducting films by reducing the oxidation potential from +0.33 to +0.23 V (versus Ag/AgCl). Optical contrast (Δ T%) of the films decreased from 17% for neat PEDOT films to 8% for PEDOT/Au-nanorods nanocomposites films (3:1 (v/v)) while switching times (from 1 to 4 sec) were similar to neat PEDOT. Conductivity of the films increased from 0.027 S/cm for neat PEDOT to 0.691 S/cm for PEDOT/Au-nanorods nanocomposites. Nanoscale morphology and contact potential of PEDOT/Au-nanorods nanocomposites were investigated in detail by Scanning Force Microscopy. Electrical measurements show a clear contact potential difference between the ITO substrate and the PEDOT/Au-nanorods film. On the film, no contact potential inhomogeneity is observed indicating that the Au-nanorods are uniformly dispersed in the film. Copyright © 2010 John Wiley & Sons, Ltd.
- Subjects
NANORODS; NANOCOMPOSITE materials; IONIC liquids; OXIDATION; CHEMICAL synthesis
- Publication
Polymers for Advanced Technologies, 2011, Vol 22, Issue 12, p1665
- ISSN
1042-7147
- Publication type
Article
- DOI
10.1002/pat.1655