Phase transitions in single crystal tubes formed from C60 molecules under high pressure

Hu, Jin‐Yong; Niu, Nana; Piao, Guangzhe; Yang, Yu‐Guang; Zhao, Qing; Yao, Yuan; Gu, Chao; Jin, Changqing; Yu, Rong

doi:10.1016/j.carbon.2012.07.032

Cited by 6 publications

(7 citation statements)

References 29 publications

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“…This value is almost twice that of diamond (442 GPa), which is the hardest known material [63]. For this and several other reasons, high-pressure studies of fullerenes have drawn a lot of attentions since the 1990s [58,[64][65][66][67][68][69][70]. C 60 molecules form a face-centered cubic (fcc) structure under ambient conditions.…”

Section: Fullerenes Under High Pressurementioning

confidence: 99%

Solvated fullerenes, a new class of carbon materials suitable for high-pressure studies: A review

Wang

2015

Journal of Physics and Chemistry of Solids

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a b s t r a c tAs the list of known carbon compounds grows longer, solvated fullerenes have become a more important class of carbon materials. Their general properties and methods of synthesis have both attracted considerable attention. The study of the behavior of these compounds under high-pressure conditions has revealed several new phenomena that have never been observed in pure fullerene. This article is a review of all recent progress in this field.

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Section: Fullerenes Under High Pressurementioning

confidence: 99%

Solvated fullerenes, a new class of carbon materials suitable for high-pressure studies: A review

Wang

2015

Journal of Physics and Chemistry of Solids

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“…26 The resistance of the C 60 nanowhiskers measured by an in situ TEM electrical probing system is about 10 MU, which is two orders of magnitude higher than the resistance obtained by the four probe method. 18 This implies that there is a large contact resistance between the gold tip and the C 60 nanowhisker.…”

Section: Resultsmentioning

confidence: 99%

“…At last, the C 60 nanotubes transform irreversibly into an amorphous structure at 40.1 GPa. 17,18 These two results indicate that under pressure, the cage structure collapses rst, then the stacking structure is disarranged. However, such behavior of C 60 nanowhiskers as electrical devices under ambient pressure has not been investigated until now.…”

Section: Introductionmentioning

confidence: 98%

“…Indeed, C 60 nanomaterials can transform to other forms of carbon under high pressure and high temperature, such as amorphous carbon (sp 2 -rich or sp 3 -rich), polycrystalline diamond and microcrystalline graphite. [11][12][13][14][15][16][17][18][19][20] Under high pressure, C 60 nanomaterials with cage structure can transform into sp 2 -rich 11,12 or sp 3 -rich [13][14][15][16][17][18] carbon, depending on the conditions of compression (non-hydrostatical or hydrostatical, room temperature or high temperature). Under hightemperature but atmospheric pressure, C 60 nanotubes and nanowhiskers can turn into graphene stacks with random orientations.…”

Section: Introductionmentioning

confidence: 99%

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The structural transitions of C₆₀ nanowhiskers under an electric field characterized by in situ transmission electron microscopy and electron energy-loss spectroscopy

Wang

Yao

et al. 2014

Nanoscale

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In situ electrical transport measurements for individual C60 nanowhiskers are performed using a transmission electron microscope which monitors the crystal and electronic structural changes of the C60 nanowhiskers simultaneously. Electron diffraction combined with electron energy-loss spectroscopy shows that under the external electric current, the C60 nanowhiskers first transform from a face-centered-cubic structure to a disordered arrangement of C60 molecules. The cage structure of the C60 molecules then collapses to an amorphous carbon and finally, the amorphous carbon turns into graphene stacks. This process indicates the hybridization transformation from sp(2.278) to sp(2), which is different from the transition process of C60 materials under high pressure. The obtained results also suggest that the stability of the C60 nanowhiskers should be of crucial concern when they work as electrical devices.

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“…Recently, various synthesis methods have been developed for the preparation of fullerene C 60 nanotubes (FNTs), such as solution evaporation [2], template technique [3], surfactant-assisted method [11], and liquid-liquid interfacial precipitation (LLIP) method [12,13]. Compared to other synthesis methods, the LLIP is simple and financially viable.…”

Section: Introductionmentioning

confidence: 99%

Fullerene C60 Nanotubes Fabricated with Light Irradiation as a Critical Influence Factor

Niu

et al. 2012

ISRN Condensed Matter Physics

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Crystalline fullerene C60 nanotubes were prepared simply via liquid-liquid interfacial precipitation using the mixture of C60-saturated pyridine and isopropyl alcohol. C60-saturated pyridine solution was exposed to visible light to promote the growth of fullerene C60 nanotubes. The average diameters of the fullerene particles in C60-pyridine colloid solution after irradiation were characterized by dynamic light scattering. After light irradiation, an outer separated layer of pyridine surrounds the fullerene particles because of the charge transfer complexes formation. The mean ratios of inner diameter to outer diameter of fullerene C60 nanotubes fabricated at different irradiation time and wavelength were given in this paper for the first time. On the basis of the relationship between the average diameters of the fullerene particles in C60-pyridine colloid solution and the mean ratio of inner diameter to outer diameter of FNTs fabricated after irradiation, outer separated layer of pyridine surrounding the fullerene particles was supposed to play an important role in the formation process of fullerene C60 nanotubes.

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Phase transitions in single crystal tubes formed from C60 molecules under high pressure

Cited by 6 publications

References 29 publications

Solvated fullerenes, a new class of carbon materials suitable for high-pressure studies: A review

Solvated fullerenes, a new class of carbon materials suitable for high-pressure studies: A review

The structural transitions of C₆₀ nanowhiskers under an electric field characterized by in situ transmission electron microscopy and electron energy-loss spectroscopy

Fullerene C60 Nanotubes Fabricated with Light Irradiation as a Critical Influence Factor

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Phase transitions in single crystal tubes formed from C60 molecules under high pressure

Cited by 6 publications

References 29 publications

Solvated fullerenes, a new class of carbon materials suitable for high-pressure studies: A review

Solvated fullerenes, a new class of carbon materials suitable for high-pressure studies: A review

The structural transitions of C60 nanowhiskers under an electric field characterized by in situ transmission electron microscopy and electron energy-loss spectroscopy

Fullerene C60 Nanotubes Fabricated with Light Irradiation as a Critical Influence Factor

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The structural transitions of C₆₀ nanowhiskers under an electric field characterized by in situ transmission electron microscopy and electron energy-loss spectroscopy