Remarkable Improvement in Efficiency of Filtration Method for Fullerene Purification

Komatsu, Naoki; Kadota, Naoki; Kimura, Takeshi; Kikuchi, Yasuharu; Arikawa, Mineyuki

doi:10.1080/15363830701421405

Cited by 18 publications

(10 citation statements)

References 8 publications

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“…The other advantages are the employment of smaller amounts of the mentioned solvents, smaller mass of stationary phase, finely granulated Al 2 O 3 and cheaper laboratory equipment in comparison to previous chromatographic methods for their isolation under pressure (15)(16)(17). This is also a relevant contribution in comparison to previous extraction and chromatographic methods, whereby only the isolation of the basic fullerenes was successfully performed under atmospheric pressure (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14).…”

Section: Resultsmentioning

confidence: 84%

“…The isolation of the higher fullerenes under atmospheric pressure from this extract would be a significant advancement in comparison to previous methods, whereby only isolation of the basic fullerenes has been achieved (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14). The other advantages in comparison to previous chromatographic methods, whereby the higher fullerenes were obtained under pressure (15)(16)(17), would be: the employment of smaller amounts of solvents for their elution, smaller mass of stationary phase Al 2 O 3 , as well as cheaper laboratory equipment.…”

Section: Introductionmentioning

confidence: 98%

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Isolation and Characterization of the Higher Fullerenes from Carbon Soot

Jovanovic

Koruga

Jovančićević

2011

Fullerenes, Nanotubes and Carbon Nanostructures

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In the first phase of the process, the higher fullerenes, mainly C 76 and C 84 , as well as the basic fullerenes C 60 and C 70 , in a smaller amount, were Soxhlet extracted with pyridine from the sample of initial carbon soot, produced in electrical arc. The extract was obtained in increased, high yield of 16.4%, due to application of the original procedure. The solubility of fullerenes in this solvent was determined. Chromatographic separation of fullerenes from pyridine extract was performed by continual elution, in one phase of the process, under atmospheric pressure, with original, defined gradient of solvents, from pure hexane to pure toluene, on active Al 2 O 3 column, by a new, improved method. Identifications of fullerenes in the obtained chromatographically purified fractions and pyridine extract of the initial soot were performed using determined IR and UV/VIS techniques that have not been presented previously for the higher fullerenes.

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Section: Resultsmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 98%

Isolation and Characterization of the Higher Fullerenes from Carbon Soot

Jovanovic

Koruga

Jovančićević

2011

Fullerenes, Nanotubes and Carbon Nanostructures

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“…It is known that fullerenes are electron-deficient polyolefins that are able to form adducts with a number of different molecules (Komatsu et al 1999). In particular, buckminsterfullerene (C 60 ) can react with catacondensed PAHs (e.g., acenes such as anthracene and pentacene) to form fullerene/PAH adducts via Diels−Alder cycloaddition reactions (Komatsu et al 1999;Briggs &Miller 2006;García-Hernández & Díaz-Luis 2013a;García-Hernández et al 2013b;Sato et al 2013). Different yields of the neutral C 60 /anthracene mono-and bis-adducts have been obtained in laboratory studies depending on the method employed in the production process, see e.g.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Formation and Photochemistry of Fullerene/Anthracene Cluster Cations

Jiang

Zhang

Yang

et al. 2019

ApJ

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Besides buckminsterfullerene (C 60 ), other fullerenes and their derivatives may also reside in space.In this work, we study the formation and photo-dissociation processes of astronomically relevant fullerene/anthracene (C 14 H 10 ) cluster cations in the gas phase. Experiments are carried out using a quadrupole ion trap (QIT) in combination with time-of-flight (TOF) mass spectrometry. The results show that fullerene (C 60 , and C 70 )/anthracene (i.e., [(C 14 H 10 ) n C 60 ] + and [(C 14 H 10 ) n C 70 ] + ), fullerene (C 56 and C 58 )/anthracene (i.e., [(C 14 H 10 ) n C 56 ] + and [(C 14 H 10 ) n C 58 ] + ) and fullerene (C 66 and C 68 )/anthracene (i.e., [(C 14 H 10 ) n C 66 ] + and [(C 14 H 10 ) n C 68 ] + ) cluster cations, are formed in the gas phase through an ion-molecule reaction pathway. With irradiation, all the fullerene/anthracene cluster cations dissociate into mono−anthracene and fullerene species without dehydrogenation. The structure of newly formed fullerene/anthracene cluster cations and the bonding energy for these reaction pathways are investigated with quantum chemistry calculations.Our results provide a growth route towards large fullerene derivatives in a bottom-up process and insight in their photo-evolution behavior in the ISM, and clearly, when conditions are favorable, fullerene/PAH clusters can form efficiently. In addition, these clusters (from 80 to 154 atoms or ∼ 2 nm in size) offer a good model for understanding the physical-chemical processes involved in the formation and evolution of carbon dust grains in space, and provide candidates of interest for the DIBs that could motivate spectroscopic studies.

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“…126,127 Despite considerable progress toward product control and batch repeatability, there is still significant variation in the structures, morphologies, and properties of the other carbon nanomaterials between synthesis routes (and thus nanocarbon suppliers). In addition, while commercial fullerenes and nanotubes are solely synthetic, graphite may be either synthetic or natural, providing even greater variation.…”

Section: Starting Materialsmentioning

confidence: 99%

Charged Carbon Nanomaterials: Redox Chemistries of Fullerenes, Carbon Nanotubes, and Graphenes

et al. 2018

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Since the discovery of buckminsterfullerene over 30 years ago, sp 2 -hybridised carbon nanomaterials (including fullerenes, carbon nanotubes, and graphene) have stimulated new science and technology across a huge range of fields. Despite the impressive intrinsic properties, challenges in processing and chemical modification continue to hinder applications. Charged carbon nanomaterials (CCNs), formed via the reduction or oxidation of these carbon nanomaterials, facilitate dissolution, purification, separation, chemical modification, and assembly. This approach provides a compelling alternative to traditional damaging and restrictive liquid phase exfoliation routes. The broad chemistry of CCNs not only provides a versatile and potent means to modify the properties of the parent nanomaterial but also raises interesting scientific issues. This review focuses on the fundamental structural forms: buckminsterfullerene, single-walled carbon nanotubes, and single-layer graphene, describing the generation of their respective charged nanocarbon species, their interactions with solvents, chemical reactivity, specific (opto)electronic properties, and emerging applications. CONTENTS

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Remarkable Improvement in Efficiency of Filtration Method for Fullerene Purification

Cited by 18 publications

References 8 publications

Isolation and Characterization of the Higher Fullerenes from Carbon Soot

Isolation and Characterization of the Higher Fullerenes from Carbon Soot

Laboratory Formation and Photochemistry of Fullerene/Anthracene Cluster Cations

Charged Carbon Nanomaterials: Redox Chemistries of Fullerenes, Carbon Nanotubes, and Graphenes

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