Synthesis of endohedral iron-fullerenes by ion implantation

Minezaki, H.; Ishihara, S.; Uchida, Takashi; Muramatsu, M.; Rácz, R.; Asaji, Toyohisa; Kitagawa, A.; Kato, Yushi; Biri, S.; Yoshida, Yoshikazu

doi:10.1063/1.4850756

Cited by 11 publications

(4 citation statements)

References 12 publications

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“…Then, a deceleration-electrodes system for highenergy pure ion beams was developed as shown in Fig. 14b (Minezaki et al 2014). The single-charged iron ion beam of 5 keV, which was extracted from an ECR (9.75 GHz) plasma source, was decelerated to the range of 250-0 eV to irradiate Fe ?…”

Section: Conventional Methods For Synthesizing Endohedral Fullerenesmentioning

confidence: 99%

Nanocarbon materials fabricated using plasmas

Hatakeyama

2017

Rev. Mod. Plasma Phys.

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Since the discovery of fullerenes more than three decades ago, new kinds of nanoscale materials of carbon allotropes called ''nanocarbons'' have so far been discovered or synthesized at successive intervals as cases such as carbon nanotubes, carbon nanohorns, graphene, carbon nanowalls, and a carbon nanobelt, while nanodiamonds were actually discovered before then. Their attractively excellent mechanical, physical, and chemical properties have driven researchers to continuously create one of the hottest frontiers in materials science and technology. While plasma states have often been involved in their discovery, on the other hand, plasma-based approaches to this exciting field originally hold promising and enormous potentials for advancing and expanding industrial/biomedical applications of nanocarbons of great diversity. This article provides an extensive overview on plasma-fabricated nanocarbon materials, where the term ''fabrication'' is defined as synthesis, functionalization, and assembly of devices to cover a wide range of issues associated with the step-by-step plasma processes. Specific attention has been paid to the comparative examination between plasma-based and non-plasma methods for fabricating the nanocarobons with an emphasis on the advantages of plasma processing, such as low-temperature/large-scale fabrication and diversitycarrying structure controllability. The review ends with current challenges and prospects including a ripple effect of the nanocarbon studies on the development of related novel nanomaterials such as transition metal dichalcogenides. It contains not only the latest progress in the field for cutting-edge scientists and engineers, but also the introductory guidance to non-specialists such as lower-class graduate students.& Rikizo Hatakeyama

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Section: Conventional Methods For Synthesizing Endohedral Fullerenesmentioning

confidence: 99%

Nanocarbon materials fabricated using plasmas

Hatakeyama

2017

Rev. Mod. Plasma Phys.

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“…Toyo University, NIRS, Hungary JAERI(ATOMK), and Osaka University groups started joint research on the establishment of a new bio-nano ECRIS at Toyo University, and in the 2010s, encapsulation experiments inside fullerenes were conducted by the ion implantation method and by using a grid inside the ECRIS [8,9].…”

Section: Introductionmentioning

confidence: 99%

Producing Iron Endohedral Fullerene on Electron Cyclotron Resonance Ion Source

et al. 2021

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An electron cyclotron resonance (ECR) ion source (ECRIS) can generate an available amount of multicharged ions, thus it is not limited for use in the field of accelerator science, but also in medical/biological fields, such as for heavy ion beam cancer treatment and ion engines. The processes of generating multicharged ions are mainly sequential collisions of a direct ionization process by electrons, and have good ion confinement characteristics. By utilizing this confinement property, we have synthesized iron-encapsulated fullerenes, which are supramolecular and can be expected to have various high functions. Fullerenes and iron ions are vaporized from pure solid materials and introduced into the ECRIS together with the support gas. We investigated conditions under which fullerene ions do not dissociate and iron ions are generated so that both can coexist. Generated ions are extracted from the ECRIS and separated by mass/charge with a dipole magnet, and detected with a Faraday cup. This measurement system is characterized by a wide dynamic range. The charge-state distribution (CSD) of ion currents was measured to investigate the optimum conditions for supramolecular synthesis. As a result, a significant spectrum suggesting the possibility of iron-encapsulated fullerenes was obtained. This paper describes the details of these experimental results.

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“…Metal-fullerene complexes, which include Os [15,16], Zn [17], and Co [18] are also important in fullerene chemistry because of their potential applications in biological, magnetic, electronic, catalytic, and optical devices. One of the authors involved in the present study succeeded in synthesizing an Fe-C 60 complex by low energy Fe + ion irradiation on C 60 thin films [19,20]. Fe-C 60 complex, along with EMF Fe@C 60 , may be useful for application as a contrast agent in the MRI because the Fe atom is a low-cost and safe alternative to Gd.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Iron-Fullerene Complexes by Scattering of C<sub>60</sub> Ions on Ferrocenyl-Undecanethiol SAM Surfaces

Motohashi

Tachikawa

Uchida

et al. 2018

e-J. Surf. Sci. Nanotech.

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In this study, we performed a mass-spectrometric study of cluster ions scattered on glass surfaces covered with ferrocene molecules under the incidence of 4.8 keV-C q+ 60 (q = 1 and 2) ions. A couple of optical flats covered with 11-ferrocenyl-1-undecanethiol self-assembled monolayer surfaces (Fc-thiol-SAMs) faced each other with a shape called a tapered planar channel (TPC) and C60 ions entered the wider opening gap. The mass and charge of each ion exiting from the narrower gap of the TPC were successfully analyzed using time-of-flight mass spectrometry combined with the parallel plate charge separation method. When the TPC was tilted by 2 • with respect to the C60 ion beam axis, the mass distribution peak shifted to ∼730 u. Furthermore, we conducted an elemental analysis of the scattered particles deposited on a Si substrate by inductively coupled plasma mass spectrometry. A significant increase in the amount of iron atoms was confirmed for the deposited substrate, as compared with non-deposited substrates.

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Synthesis of endohedral iron-fullerenes by ion implantation

Cited by 11 publications

References 12 publications

Nanocarbon materials fabricated using plasmas

Nanocarbon materials fabricated using plasmas

Producing Iron Endohedral Fullerene on Electron Cyclotron Resonance Ion Source

Synthesis of Iron-Fullerene Complexes by Scattering of C<sub>60</sub> Ions on Ferrocenyl-Undecanethiol SAM Surfaces

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