Foulal, Soukaina and El Hajjaji, Souad and Trif, Laszlo and Sabbar, Abdelaziz and Chtioui Gay, Imane and Caro, Dominique De
and Faulmann, Christophe
and Satgé-De Caro, Pascale
Molecular conductors as nanoparticles in the presence of long-chain alkyl imidazolium salts or amphiphilic molecules.
(2017)
Journal of Thermal Analysis and Calorimetry, 127 (3). 1879-1888. ISSN 1388-6150
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(Document in English)
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Official URL: https://doi.org/10.1007/s10973-016-5858-z
Abstract
Nanoparticles of two molecule-based conductors, namely TTF·TCNQ and TTF[Ni(dmit)2]2, have been prepared in organic solution in the presence of ionic or nonionic species bearing a long-chain alkyl group, acting as growth-controlling agents. The size, morphology, and state of dispersion of the nanoparticles depended on the nature of the growth-controlling agent and the reaction temperature. In the presence of a long-chain alkyl-based ionic liquid at −50 °C, electron micrographs evidence that TTF·TCNQ nano-objects are frequently elongated, whereas TTF[Ni(dmit)2]2 nanoparticles are aggregated. In the presence of a neutral long-chain alkyl-based imine at room temperature, nanoparticles are spherical (mean diameter <20 nm) and well dispersed. Vibration spectra evidence that the amounts of charge transfer for TTF·TCNQ and TTF[Ni(dmit)2]2 as nano-objects are very similar to those for the same phases as bulk materials. According to the thermoanalytical investigations, the prepared nanoparticles are stable thermally up to approximately 200 °C, and their decomposition is generally a multi-step process. Their heat treatment results in various sulfur-containing volatiles (CS2, SO2, H2S); moreover, HCN is also detected in the case of nitrogen-containing molecules (TCNQ).
Item Type: | Article |
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HAL Id: | hal-01606402 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Other partners > Hungarian Academy of Sciences - HAS (HUNGARY) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) Other partners > Université Mohammed V-Rabat - UM5 (MOROCCO) |
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Deposited On: | 28 Nov 2019 11:55 |
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