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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.)

Self-assembled Films of Poly(o-Ethoxyaniline) Grafted with Functionalized Multiwalled Carbon Nanotubes

Full text
Author(s):
Soares, Vinicius Bianchi [1] ; Polaci da Silva, Luis Antonio [2] ; de Araujo, Gabriela Martins [1] ; Simoes, Fabio Ruiz [2]
Total Authors: 4
Affiliation:
[1] Univ Fed Sao Paulo, Grad Program Chem Sustainabil Sci & Technol, Diadema - Brazil
[2] Univ Fed Sao Paulo, Inst Marine Sci, Santos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: ELECTRONIC MATERIALS LETTERS; v. 16, n. 6 SEP 2020.
Web of Science Citations: 0
Abstract

In this study, composites based on poly(o-ethoxyaniline), POEA, and its composites grafted with functionalized multiwalled carbon nanotubes (MWCNT) were obtained by the oxidative in situ chemical polymerization varying the mass ratio ofo-ethoxyaniline:MWCNT of 100:1 and 100:5. POEA and its POEA-MWCNT grafted composites were used to prepare self-assembled (SA) deposited onto indium tin oxide (ITO) substrates with alternating layers of polystyrene sulfonate (PSS). The structure and morphology of the samples were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. The SA films were characterized by cyclic voltammetry, UV-Vis and electrochemical impedance spectroscopy (EIS). The EIS results showed expressive decrease of the polarization resistance (R-p), from 13,342 Omega, for POEA/PSS, to 568 Omega for POEA-MWCNT(100:1)/PSS (about 23 times lower) and to 240 Omega for POEA-MWCNT(100:5)/PSS film. Considering that higher mass proportions of MWCNT can affect the final morphology and the oxidation ratio of POEA chains and aiming strong interactions between the POEA and MWCNT as well the significant reduction of charge transfer resistance, the SA film POEA-MWCNT(100:1)/PSS has potential for future applications as sensors and charge storage devices. (AU)

FAPESP's process: 14/23858-3 - Development of sensor materials based on self assembled fims of conducting polymers and carbon nanotubes for the determination of endocrine disrupters in marine environments
Grantee:Fabio Ruiz Simões
Support Opportunities: Regular Research Grants
FAPESP's process: 17/24742-7 - Sensors based on composites of conducting polymers and graphene aiming the determination of endocrine disruptor substances in marine environment
Grantee:Fabio Ruiz Simões
Support Opportunities: Regular Research Grants
FAPESP's process: 17/08989-2 - 68th Annual Meeting of the International Society of Electrochemistry
Grantee:Fabio Ruiz Simões
Support Opportunities: Research Grants - Meeting - Abroad