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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

One-Step Synthesis, Characterization, and Properties of Emeraldine Salt Nanofibers Containing Gold Nanoparticles

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Author(s):
Nobrega, Marcelo M. [1] ; Martins, Vitor L. [1] ; Torresi, Roberto M. [1] ; Temperini, Marcia L. A. [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, BR-05513970 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Journal of Physical Chemistry C; v. 118, n. 8, p. 4267-4274, FEB 27 2014.
Web of Science Citations: 19
Abstract

This paper reports a simple one-step synthesis of gold nanospheres/polyaniline (PANI) nanofiber composites via the modification of the interfacial synthesis of PANI, leading to hybrid materials with emeraldine salt fibers as one of the components. Their morphological and structural characterizations are presented, as well as their electrochemical behaviors. The composites were submitted to heating treatment and UV-visible light radiation, and the products were characterized. Our results showed that the presence of the gold nanoparticles improved the thermal behavior of the composites, increasing the onset temperature. The electroactivity and capacity of the composites were enhanced when compared to PANI-ES, and their behaviors are dependent on the amount of gold nanoparticles in the composites. Submitting to heating treatment and UV-visible light irradiation, the PANI-ES nanofibers presented low dedoping and an extensive formation of cross-linking segments for both treatments, whereas the composites showed a high dedoping process and no cross-linking formation for the heating treatment and high cross-linking formation with no change in the doping level for the UV-visible light irradiation. Our results suggest that the PANI-Au composites may be a promising material for the use in capacitors, solar cells, and other devices. (AU)

FAPESP's process: 09/53199-3 - Molecular recognition and energy storage: fundamental studies concerning geometry, size and synthesis effects on the optimization of the chemical properties of electroactive materials
Grantee:Roberto Manuel Torresi
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 10/18107-8 - Study of the structures of PANI nanofibers and their hybrids with metallic nanostructures by Raman epectroscopy
Grantee:Marcelo Medre Nobrega
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 09/09209-4 - Metal electrodeposition in ionic liquids
Grantee:Vitor Leite Martins
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)