Nanowires of molecule-based charge-transfer salts

Savy, Jean-Philippe; de, Dominique; Faulmann, Christophe; Valade, Lydie; Almeida, Manuel; Koike, Tadahiro; Fujiwara, Hideki; Sugimoto, Toyonari; Fraxedas, Jordi; Ondarçuhu, Thierry; Pasquier, Claude

doi:10.1039/b618241k

Cited by 36 publications

(19 citation statements)

References 43 publications

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“…The asymmetric tail may be related to a satellite arising from the energy loss of electrons associated with the occupied-unoccupied states contributed by nitrogen. 38 The N 1s spectrum has a reduced relative area of the component caused by pyridinic nitrogen atoms when compared to the spectrum recorded at 800 eV (Fig. 2a).…”

Section: View Article Onlinementioning

confidence: 99%

Controlling pyridinic, pyrrolic, graphitic, and molecular nitrogen in multi-wall carbon nanotubes using precursors with different N/C ratios in aerosol assisted chemical vapor deposition

Bulusheva

Окотруб

Fedoseeva

et al. 2015

Phys. Chem. Chem. Phys.

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Nitrogen-containing multi-wall carbon nanotubes (N-MWCNTs) were synthesized using aerosol assisted chemical vapor deposition (CVD) techniques in conjunction with benzylamine:ferrocene or acetonitrile: ferrocene mixtures. Different amounts of toluene were added to these mixtures in order to change the N/C ratio of the feedstock. X-ray photoelectron and near-edge X-ray absorption fine structure spectroscopy detected pyridinic, pyrrolic, graphitic, and molecular nitrogen forms in the N-MWCNT samples. Analysis of the spectral data indicated that whilst the nature of the nitrogen-containing precursor has little effect on the concentrations of the different forms of nitrogen in N-MWCNTs, the N/C ratio in the feedstock appeared to be the determining factor. When the N/C ratio was lower than ca. 0.01, all four forms existed in equal concentrations, for N/C ratios above 0.01, graphitic and molecular nitrogen were dominant. Furthermore, higher concentrations of pyridinic nitrogen in the outer shells and N 2 molecules in the core of the as-produced N-MWCNTs suggest that the precursors were decomposed into individual atoms, which interacted with the catalyst surface to form CN and NH species or in fact diffused through the bulk of the catalyst particles. These findings are important for a better understanding of possible growth mechanisms for heteroatom-containing carbon nanotubes (CNTs) and therefore paving the way for controlling the spatial distribution of foreign elements in the CNTs using CVD processes.

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Section: View Article Onlinementioning

confidence: 99%

Controlling pyridinic, pyrrolic, graphitic, and molecular nitrogen in multi-wall carbon nanotubes using precursors with different N/C ratios in aerosol assisted chemical vapor deposition

Bulusheva

Окотруб

Fedoseeva

et al. 2015

Phys. Chem. Chem. Phys.

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“…However, using this two-phase technique, diameters lower than 100 nm is never observed. We have developed an easy route to the formation of TTF·TCNQ nanowires exhibiting diameters lower than 80 nm, and well dispersed on a surface from which they can easily be removed (Savy et al, 2007). The substrate on which nanowires are formed is an oxide conversion coating onto stainless steel (stainless steel conversion coating, abbreviated SSCC).…”

Section: Nanowires Of Ttf·tcnq and Ttf[ni(dmit) 2 ]mentioning

confidence: 99%

“…However, in the conditions explored, nanowires have never been observed. We have developed the use of a semiconducting electrode, namely silicon, to process nanowire films (Savy et al, 2007). Silicon is the substrate of choice in the electronic domain.…”

Section: Electrochemically-grown Nanowires Of Charge-transfer Saltsmentioning

confidence: 99%

Nanowires of Molecule-Based Conductors

de¹

2011

Nanowires - Fundamental Research

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“…Moreover, it is the one-dimensional conductor which is the most intensively processed in forms others than single crystals. For instance, TTF·TCNQ was prepared as thin films on (100)-oriented alkali halide substrates (Fraxedas et al, 2002), as self-organized monolayers on Au(111) (Yan et al, 2009), or as nanowires on stainless steel conversion coatings (Savy et al, 2007). We report in this chapter the preparation and spectral studies of TTF·TCNQ prepared as nanoparticles.…”

Section: Introductionmentioning

confidence: 99%