Systematic Study of the (ET)<sub>2</sub>I<sub>3</sub> Reticulate Doped Polycarbonate Film: Structure, ESR, Transport Properties and Superconductivity

Laukhina, Elena; Ulański, Jacek; Khomenko, A.G.; Pesotskiǐ, S. I.; Ткачев, В. В.; Atovmyan, L. O.; Yagubskii, Eduard B.; Rovira, Concepció; Veciana, Jaume; Vidal-Gancedo, José; Laukhin, V. N.

doi:10.1051/jp1:1997161

Cited by 30 publications

(36 citation statements)

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“…[2] (BEDT-TTF) 2 I 3 was also studied as a composite film. [3] In particular, superconductivity was evi-bilizing agent and synthesis conditions. We report on the more recent conditions investigated (i) to produce nanoparticles of 35 nm for β-(BEDT-TTF) 2 I 3 , (ii) to reduce the particle size to 10-15 nm for TTF[Ni(dmit) 2 ] 2 and 3-5 nm for (TMTSF) 2 ClO 4 , and (iii) to improve the growth duration from days to one hour for (TMTSF) 2 PF 6 .…”

Section: Introductionmentioning

confidence: 99%

Four Molecular Superconductors Isolated as Nanoparticles

Faulmann

Valade

et al. 2014

Eur J Inorg Chem

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Upon reduction of a 1H‐cyclobuta[de]naphthalene‐4,5‐diylbis(diarylmethylium) species, a new CC bond is formed between the Cα and Cortho atoms of the two chromophores, which presents an unprecedented coupling pattern for the dimerization of two trityl units. By attaching an annulated cyclobutane ring at the opposite peri position of the naphthalene core, the distance between the Cα carbon atoms was elongated beyond the limit of σ‐bond formation through “scissor effects”. The suppression of CαCα bond formation, which would lead to hexaphenylethane‐type compounds, is key to the first successful isolation of the α,o‐adducts. The 5‐diarylmethylene‐6‐triarylmethyl‐1,3‐cyclohexadiene unit in the α,o‐adducts is stable, and isomerization of the cyclohexadiene unit into an aromatic system was not observed. The newly formed CαCortho bond was cleaved upon two‐electron oxidation to regenerate the dicationic dye.

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Section: Introductionmentioning

confidence: 99%

Four Molecular Superconductors Isolated as Nanoparticles

Faulmann

Valade

et al. 2014

Eur J Inorg Chem

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“…Thus, the data obtained are similar to that for the crystallites of the α-(BEDT-TTF) 2 I 3 phase in the BL films. 15 Moreover, the EPR spectra of the treated textiles gave a signal with a linewidth of about 80 G and g factor of 2.0060, which further confirmed that the crystals on the textile surface correspond to α-(BEDT-TTF) 2 I 3.…”

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confidence: 56%

“…8,9 In the framework of smart organic materials, we recently reported on the extremely sensitive strain sensing properties of bi-layer (BL) films based on a polymeric matrix containing a conducting top-layer of a microcrystalline network of a conducting charge transfer organic salt. 10,11 These BL films exhibited a fast and fully reversible response reaching gauge factors values of [10][11][12][13][14][15][16][17][18][19][20], that are one order of magnitude higher than the most commonly used manganese-based electromechanical sensors. The origin of these sensing capabilities is due to the deformation of the soft crystallites which, in turn, modifies the electronic band structure of the conducting charge transfer salt.…”

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confidence: 99%

Highly piezoresistive textiles based on a soft conducting charge transfer salt

et al. 2011

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“…[3] Furthermore, the other intensive peaks in Figure 4B correspond to its higher-reflection (00l) planes, while there are no peaks relating to the other BEDT-TTF packing phase expected for the b″-phase. This means that under the appropriate conditions, the charge-transfer salt is found to electrocrystallize mainly b″-(BEDT-TTF) 4 [14,15] Therefore it can be concluded that the nanotube arrays grow along the c-axis, and the BEDT-TTF layers and Fe(C 2 O 4 ) 3 layers stack alternately along the direction of the length of the nanotubes. An electron spin resonance (ESR) measurement was carried out to further investigate the properties of the as-synthesized nanotubes, and the spectrum obtained is shown in Figure 5.…”

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confidence: 98%

“…This result also agreed with the conclusion from the single-crystal data. [3,42] It has previously been reported by Laukhina and co-workers [14,15] that the measured values of the interplanar spacing d 001 along with intensities of (00l) reflections allow the identification of the different phases of the BEDT-TTF-based charge-transfer salt. To further reveal the structure and the orientation of the nanotube arrays, the X-ray diffraction (XRD) patterns were recorded on nanotube arrays that were embedded in an AAO template and a film that was directly electrodeposited on an indium tin oxide (ITO) substrate without confinement on an AAO template.…”

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confidence: 99%

Bis(ethylenedithio)tetrathiafulvalene Charge‐Transfer Salt Nanotube Arrays

Tang

et al. 2006

Advanced Materials

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Bis(ethylenedithio)tetrathiafulvalene(BEDT-TTF; Scheme 1) based charge-transfer salts have been intensively studied since the initial synthesis of neutral BEDT-TTF molecules.[1] These salts exhibit many interesting solid-state physical properties such as superconductivity, [2][3][4][5] conductor-toinsulator transitions, [6][7][8] antiferromagnetism, [5,7,9] or ferromagnetism.[4] The basic structure of BEDT-TTF-based salt crystals is composed of two alternating layers: a BEDT-TTF cation layer and an anion layer. The anions can be varied in terms of size, charge, and structure, giving rise to the properties mentioned above. However, most of these physical properties were investigated on macroscopic single-crystalline samples to explore the anisotropic characteristics of the properties. To advance these materials for potential applications, such as interfacial materials for organic molecules and inorganic substrates, or to probe the size effect on the superconductivity of these materials, quasi-1D BEDT-TTF-based systems, including nanotubes and nanowires, with controlled size and morphology are important. To our best knowledge, there have been no reports in the literature on the fabrication of BEDT-TTF-based charge-transfer salt nanotubes. In addition, although the electrical characteristics of single crystals and films of BEDT-TTF-based charge-transfer salts have been well studied [10][11][12][13][14][15] the electrical conductivity of one dimensional materials has rarely been investigated.Porous anodic aluminum oxide (AAO) membranes have a well-defined close-packed array of columnar hexagonal cells, each containing a central pore with different shapes normal to the surface.[16] They are ideal host systems for the fabrication of large-area nanostructures (nanotubes and nanowires). Moreover, the length and diameter of these nanostructures can be readily tailored by changing the thickness and pore diameter of the AAO templates. A variety of metals, [17][18][19][20] semiconductors, [21][22][23] and hybrid materials [24,25] have been synthesized using various methods based on AAO templates, which were pioneered by Martin and co-workers. [26,27] Various other 1D inorganic materials have been synthesized and well studied, [28][29][30][31][32][33] while only a few reports focus on organic materials [34][35][36] and devices based on them. [37,38] Herein, we describe a simple route to the fabrication of large-area BEDT-TTF-and tris(oxalate)iron-based chargetransfer salt nanotubes from an electrochemical process on an AAO anode. The morphology of these nanotubes was readily tuned by varying the pore shapes and apertures of the AAO templates or by changing the electrocrystallization time. The fabrication procedure can be regarded as a model for fabricating nanotubes of other interesting charge-transfer salts. The current-voltage (I-V) characteristics and temperature-dependent electrical conductivity of synthesized nanotube arrays were studied by constructing an electrical circuit with nanotube arrays, and the I-V characterist...

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Systematic Study of the (ET)₂I₃ Reticulate Doped Polycarbonate Film: Structure, ESR, Transport Properties and Superconductivity

Cited by 30 publications

References 1 publication

Four Molecular Superconductors Isolated as Nanoparticles

Four Molecular Superconductors Isolated as Nanoparticles

Highly piezoresistive textiles based on a soft conducting charge transfer salt

Bis(ethylenedithio)tetrathiafulvalene Charge‐Transfer Salt Nanotube Arrays

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Systematic Study of the (ET)2I3 Reticulate Doped Polycarbonate Film: Structure, ESR, Transport Properties and Superconductivity

Cited by 30 publications

References 1 publication

Four Molecular Superconductors Isolated as Nanoparticles

Four Molecular Superconductors Isolated as Nanoparticles

Highly piezoresistive textiles based on a soft conducting charge transfer salt

Bis(ethylenedithio)tetrathiafulvalene Charge‐Transfer Salt Nanotube Arrays

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Systematic Study of the (ET)₂I₃ Reticulate Doped Polycarbonate Film: Structure, ESR, Transport Properties and Superconductivity