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Title: In situ growth of ceramic quantum dots in polyaniline host via water vapor flow diffusion as potential electrode materials for energy applications

Abstract

In situ preparation of polyaniline-ceramic nanocomposites has recently demonstrated that the electrical properties are highly improved with respect to the typical ex situ preparations. In this report, we present for the first time, to the best of our knowledge, the in situ growth of titanium oxide quantum dots in polyaniline host via water vapor flow diffusion as an easily adaptable route to prepare other ceramic-polymer nanocomposites. The main relevance of this method is the possibility to prepare ceramic quantum dots from alkoxide precursors using water vapor flow into any hydrophobic polymer host and to achieve good homogeneity and size-control. In addition, we perform full characterization by means of high-resolution transmission electron microscopy, X-ray powder diffraction, small angle X-ray scattering, thermogravimetric and calorimetric analyses, confocal Raman microscopy and impedance spectroscopy analyses. The presence of the polymer host and interparticle Coulomb repulsive interactions was evaluated as an influence for the formation of ~3–8 nm equally-sized quantum dots independently of the concentration. The polyaniline polaron population showed an increase for the quantum dots diluted regime and the suppression at the concentrated regime, ascribed to the formation of chemical bonds at the interface, which was confirmed by theoretical simulations. In agreement with the previousmore » observation, the in situ growth of ceramic quantum dots in polyaniline host via water vapor flow diffusion could be very useful as a novel approach to prepare electrode materials for energy conversion and storage applications. - Highlights: • In situ growth of titanium oxide quantum dots in polyaniline host via water vapor flow diffusion. • Polyaniline charge carriers at the interface and charge interactions between quantum dots. • Easy extrapolation to sol-gel derived quantum dots into polymer host as potential electrode materials.« less

Authors:
 [1];  [1];  [1];  [2];  [1]
  1. Centro NanoMat/CryssMat/Física – DETEMA – Facultad de Química – Universidad de la República, C.P. 11800 Montevideo (Uruguay)
  2. Laboratorio de Fisicoquímica de Superficies – DETEMA – Facultad de Química – Universidad de la República, C.P. 11800 Montevideo (Uruguay)
Publication Date:
OSTI Identifier:
22658288
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 250; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ANILINE; CERAMICS; CHEMICAL BONDS; DIFFUSION; ELECTRICAL PROPERTIES; ELECTRODES; EXPERIMENTAL DATA; POLYMERIZATION; POLYMERS; QUANTUM DOTS; SMALL ANGLE SCATTERING; SOL-GEL PROCESS; THERMAL GRAVIMETRIC ANALYSIS; TITANIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY; WATER VAPOR; X-RAY DIFFRACTION

Citation Formats

Mombrú, Dominique, Romero, Mariano, E-mail: mromero@fq.edu.uy, Faccio, Ricardo, E-mail: rfaccio@fq.edu.uy, Castiglioni, Jorge, and Mombrú, Alvaro W., E-mail: amombru@fq.edu.uy. In situ growth of ceramic quantum dots in polyaniline host via water vapor flow diffusion as potential electrode materials for energy applications. United States: N. p., 2017. Web. doi:10.1016/J.JSSC.2017.03.016.
Mombrú, Dominique, Romero, Mariano, E-mail: mromero@fq.edu.uy, Faccio, Ricardo, E-mail: rfaccio@fq.edu.uy, Castiglioni, Jorge, & Mombrú, Alvaro W., E-mail: amombru@fq.edu.uy. In situ growth of ceramic quantum dots in polyaniline host via water vapor flow diffusion as potential electrode materials for energy applications. United States. doi:10.1016/J.JSSC.2017.03.016.
Mombrú, Dominique, Romero, Mariano, E-mail: mromero@fq.edu.uy, Faccio, Ricardo, E-mail: rfaccio@fq.edu.uy, Castiglioni, Jorge, and Mombrú, Alvaro W., E-mail: amombru@fq.edu.uy. 2017. "In situ growth of ceramic quantum dots in polyaniline host via water vapor flow diffusion as potential electrode materials for energy applications". United States. doi:10.1016/J.JSSC.2017.03.016.
@article{osti_22658288,
title = {In situ growth of ceramic quantum dots in polyaniline host via water vapor flow diffusion as potential electrode materials for energy applications},
author = {Mombrú, Dominique and Romero, Mariano, E-mail: mromero@fq.edu.uy and Faccio, Ricardo, E-mail: rfaccio@fq.edu.uy and Castiglioni, Jorge and Mombrú, Alvaro W., E-mail: amombru@fq.edu.uy},
abstractNote = {In situ preparation of polyaniline-ceramic nanocomposites has recently demonstrated that the electrical properties are highly improved with respect to the typical ex situ preparations. In this report, we present for the first time, to the best of our knowledge, the in situ growth of titanium oxide quantum dots in polyaniline host via water vapor flow diffusion as an easily adaptable route to prepare other ceramic-polymer nanocomposites. The main relevance of this method is the possibility to prepare ceramic quantum dots from alkoxide precursors using water vapor flow into any hydrophobic polymer host and to achieve good homogeneity and size-control. In addition, we perform full characterization by means of high-resolution transmission electron microscopy, X-ray powder diffraction, small angle X-ray scattering, thermogravimetric and calorimetric analyses, confocal Raman microscopy and impedance spectroscopy analyses. The presence of the polymer host and interparticle Coulomb repulsive interactions was evaluated as an influence for the formation of ~3–8 nm equally-sized quantum dots independently of the concentration. The polyaniline polaron population showed an increase for the quantum dots diluted regime and the suppression at the concentrated regime, ascribed to the formation of chemical bonds at the interface, which was confirmed by theoretical simulations. In agreement with the previous observation, the in situ growth of ceramic quantum dots in polyaniline host via water vapor flow diffusion could be very useful as a novel approach to prepare electrode materials for energy conversion and storage applications. - Highlights: • In situ growth of titanium oxide quantum dots in polyaniline host via water vapor flow diffusion. • Polyaniline charge carriers at the interface and charge interactions between quantum dots. • Easy extrapolation to sol-gel derived quantum dots into polymer host as potential electrode materials.},
doi = {10.1016/J.JSSC.2017.03.016},
journal = {Journal of Solid State Chemistry},
number = ,
volume = 250,
place = {United States},
year = 2017,
month = 6
}