Synthesis of alkali-metal-doped C60 nanotubes

Cui, Wen; Liu, Dedi; Yao, Mingguang; Li, Quanjun; Liu, Ran; Liu, Zhaodong; Wu, Wei; Zou, Bo; Cui, Tian; Liu, Bingbing; Sundqvist, Bertil

doi:10.1016/j.diamond.2010.10.006

Cited by 4 publications

(2 citation statements)

References 27 publications

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“…Hence, these fcc C 60 NWs should be superconducting if doped with alkali metals [ 15 ]. C 60 nanotubes were doped with Li, Na, and K, and the crystal structures were examined using Raman spectroscopy [ 86 ]. Superconductive C 60 NWs were also successfully fabricated by doping with K [ 87 , 88 ].…”

Section: Electrical and Superconducting Properties Of C 60 mentioning

confidence: 99%

Synthesis of fullerene nanowhiskers using the liquid–liquid interfacial precipitation method and their mechanical, electrical and superconducting properties

Miyazawa

2015

Science and Technology of Advanced Materials

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Fullerene nanowhiskers (FNWs) are thin crystalline fibers composed of fullerene molecules, including C60, C70, endohedral, or functionalized fullerenes. FNWs display n-type semiconducting behavior and are used in a diverse range of applications, including field-effect transistors, solar cells, chemical sensors, and photocatalysts. Alkali metal-doped C60 (fullerene) nanowhiskers (C60NWs) exhibit superconducting behavior. Potassium-doped C60NWs have realized the highest superconducting volume fraction of the alkali metal-doped C60 crystals and display a high critical current density (Jc) under a high magnetic field of 50 kOe. The growth control of FNWs is important for their success in practical applications. This paper reviews recent FNWs research focusing on their mechanical, electrical and superconducting properties and growth mechanisms in the liquid–liquid interfacial precipitation method.

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Section: Electrical and Superconducting Properties Of C 60 mentioning

confidence: 99%

Synthesis of fullerene nanowhiskers using the liquid–liquid interfacial precipitation method and their mechanical, electrical and superconducting properties

Miyazawa

2015

Science and Technology of Advanced Materials

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“…In particular, in a dopant-C60s hybrid system, the presence of the intercalants strongly affects the structure of the grown crystals, as well as the electronic properties of the formed crystals via different intermolecular interactions. [8,9,[20][21][22][23][24] Finely tuning the intermolecular interaction is thus important for tailoring the properties of fullerene crystals, which may also allow us to study the new physical process during the polymerization of fullerenes. Besides these expectations, the parameters such as nanosize effect and the special morphologies of the fullerene nano/microcrystals could also play roles in the transformations of fullerenes under pressure.…”

Section: Introductionmentioning

confidence: 99%

Controllable synthesis of fullerene nano/microcrystals and their structural transformation induced by high pressure

Yao

Liu

2013

Chinese Phys. B

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Fullerene molecules are interesting materials because of their unique structures and properties in mechanical, electrical, magnetic, and optical aspects. Current research is focusing on the construction of well-defined fullerene nano/microcrystals that possess desirable structures and morphologies. Further tuning the intermolecular interaction of the fullerene nano/microcrystals by use of pressure is an efficient way to modify their structures and properties, such as creation of nanoscale polymer structures and new hybrid materials, which expands the potential of such nanoscale materials for direct device components. In this paper, we review our recent progress in the construction of fullerene nanostructures and their structural transformation induced by high pressure. Fullerene nano/microcrystals with controllable size, morphology and structure have been synthesized through the self-assembly of fullerene molecules by a solvent-assisted method. By virtue of high pressure, the structures, components, and intermolecular interactions of the assemblied fullerene nano/microcrystals can be finely tuned, thereby modifying the optical and electronic properties of the nanostructures. Several examples on high pressure induced novel structural phase transition in typical fullerene nanocrystals with C60 or C70 cage serving as building blocks are presented, including high pressure induced amorphization of the nanocrystals and their bulk moduli, high pressure and high temperature (HPHT) induced polymerization in C60 nanocrystals, pressure tuned reversible polymerization in ferrocene-doped C60/C70 single crystal, as well as unique long-range ordered crystal with amorphous nanoclusters serving as building blocks in solvated C60 crystals, which brings new physical insight into the understanding of order and disorder concept and new approaches to the design of superhard carbon materials. The nanosize and morphology effects on the transformations of fullerene nanocrystals have also been discussed. These results provide the foundation for the fabrication of pre-designed and controllable geometries, which is critical in fullerenes and relevant materials for designing nanometer-scale electronic, optical, and other devices.

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