Synthesis, characterization, and thermoelectric properties of superconducting (BEDT-TTF)<sub>2</sub>I<sub>3</sub>nanoparticles

Chtioui-Gay, I.; Faulmann, Christophe; de, Dominique; Jacob, Kane; Valade, Lydie; de, Pascale; Fraxedas, Jordi; Ballesteros, Belén; Steven, Eden; Choi, E. S.; Lee, Minseong; Benjamin, Shermane; Yvenou, Etienne; Simonato, Jean‐Pierre; Carella, Alexandre

doi:10.1039/c6tc01378c

Cited by 10 publications

(22 citation statements)

References 33 publications

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“…From the 1990s, thin films [2] and nanorod arrays [3] of -(BEDT-TTF) 2 Cu(NCS) 2 have also been reported. Some of us have shown that roughly spherical nanoparticles of molecule-based conductors could be prepared either by a chemical or an electrochemical route by adding to the solution a growth controlling agent, such as an amphiphilic molecule, an ionic liquid or a long alkyl-chain quaternary ammonium salt [4][5][6][7][8]. We have already described the synthesis of nanoparticles of -(BEDT-TTF) 2 Cu(NCS) 2 by a chemical or an electrochemical route.…”

Section: Introductionmentioning

confidence: 99%

Reproducible nanostructuration of the superconducting κ-(BEDT-TTF)2Cu(NCS)2 phase

Beaumont

Faulmann

et al. 2020

Synthetic Metals

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Section: Introductionmentioning

confidence: 99%

Reproducible nanostructuration of the superconducting κ-(BEDT-TTF)2Cu(NCS)2 phase

Beaumont

Faulmann

et al. 2020

Synthetic Metals

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“…The growth controlling agents evaluated in this study, namely, OATM and BIBS, prevented the preparation of Per 2 [Au(mnt) 2 ] as micro-sized crystals. Irregularly shaped nanocrystals are grown in the presence Moreover, the thermal conductivity λ is very low for organic-based conductors as nanoparticles [13]. As the thermoelectric efficiency of a material is evaluated by its figure of merit ZT in which S 2 is in the numerator and λ in the denominator, Per 2 [Au(mnt) 2 ] nanoparticles described in this paper could be interesting as one of the components for organic-based thermoelectric devices.…”

Section: Resultsmentioning

confidence: 99%

First nanoparticles of Per 2 [Au(mnt) 2 ]

de¹,

Jacob²,

Faulmann³

et al. 2020

Comptes Rendus. Chimie

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Nanoparticles of the Per 2 [Au(mnt) 2 ] (Per = perylene; mnt 2− = maleonitrile dithiolate) compound have been obtained by the electrochemical oxidation of perylene in the presence of [(n-C 4 H 9) 4 N][Au(mnt) 2 ] and, either an amphiphilic molecule (OATM), or a zwitterionic ionic liquid (BIBS), acting as growth controlling agents. When the reaction is carried out with OATM, nanocrystals exhibiting sizes in the 35-100 nm range are grown whereas roughly spherical nanoparticles are observed if BIBS is used (10-40 nm in diameter). Infrared and Raman spectra confirm the presence of both perylene donor and maleonitrile dithiolate ligands within the nanopowders. Electrical conductivity measurements at room temperature lead to about 0.025 S•cm −1 , a typical value for nanopowders of bis(dithiolene)-based conducting compounds. Finally, current-voltage characteristics for the spherical nanoparticles are fitted with a Shockley diode model. A saturation current of 19.3 pA and a threshold voltage of 0.149 V are extracted from this model.

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“…( Figure 5). [19] Nanoparticles were larger, 85 nm and 40 nm, when using dodecylamine and hexadecylamine, respectively. The efficiency of 1-octanamine-N-(2-thienylmethylene) can be explained by possible π-π and S•••S van-der Waals interactions, in addition to the long chain protection.…”

Section: Chemical Methodsmentioning

confidence: 95%

Nanoparticles of Molecular Conductors and Superconductors: Progress Over the Last Ten Years

Jacob

Faulmann

et al. 2020

Eur J Inorg Chem

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We review conditions for growing molecular conductors and superconductors as nanoparticles, an attractive morphology for integrating them into electronic components or composite materials. Although the one‐dimensional character of these materials does not favor their growth as spheroidal objects, by adding growth controlling molecules to the reaction mixture, we succeeded in growing particles from 2 to 50 nm in size for fourteen systems. The choice of the growth controller depends on the nature of the chemical interactions it can establish with the reactive species to limit growth, and on the chemical or electrochemical synthesis procedure. We show that the chemical nature of the nanoparticles is alike single crystals. Due to resistive boundaries, conducting properties of nanoparticle powders are alike microcrystalline powders. Nevertheless, superconductivity occurs in three of the studied materials. The potential application of these nanomaterials is reported in four fields: composite materials, field‐effect transistors, thermoelectric components and biomedical materials.

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Synthesis, characterization, and thermoelectric properties of superconducting (BEDT-TTF)₂I₃nanoparticles

Abstract: (BEDT-TTF)2I3 nanoparticles of 2–6 nm have been isolated, and they exhibit a superconducting behaviour and encouraging thermoelectric properties.

Cited by 10 publications

References 33 publications

Reproducible nanostructuration of the superconducting κ-(BEDT-TTF)2Cu(NCS)2 phase

Reproducible nanostructuration of the superconducting κ-(BEDT-TTF)2Cu(NCS)2 phase

First nanoparticles of Per 2 [Au(mnt) 2 ]

Nanoparticles of Molecular Conductors and Superconductors: Progress Over the Last Ten Years

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Synthesis, characterization, and thermoelectric properties of superconducting (BEDT-TTF)2I3nanoparticles

Abstract: (BEDT-TTF)2I3 nanoparticles of 2–6 nm have been isolated, and they exhibit a superconducting behaviour and encouraging thermoelectric properties.

Cited by 10 publications

References 33 publications

Reproducible nanostructuration of the superconducting κ-(BEDT-TTF)2Cu(NCS)2 phase

Reproducible nanostructuration of the superconducting κ-(BEDT-TTF)2Cu(NCS)2 phase

First nanoparticles of Per 2 [Au(mnt) 2 ]

Nanoparticles of Molecular Conductors and Superconductors: Progress Over the Last Ten Years

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Product

Resources

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Synthesis, characterization, and thermoelectric properties of superconducting (BEDT-TTF)₂I₃nanoparticles