Authors:Olga V. Alekseeva, Vladimir P. Barannikov, Nadezhda A. Bagrovskaya, and Andrew V. Noskov
Composite materials consisting of polymer matrix and fullerenes are of interest for electronics, optics, sensors, medicine, biology, etc. [ 1 ]. It was ascertained that incorporation of fullerene improves physical
Authors:Giancarlo Angelini, Ornella Ursini, and Franco Cataldo
Fullerene/silica hybrid materials were obtained by radiation grafting on silica surface of toluene or decalin solutions of
C60. As determined by thermogravimetric analysis, the amount of C60 grafted on silica surface was dependent from the radiation dose administered and independent from the C60 concentration and the nature of the organic solvent. In absence of air, a dose of 48 kGy was sufficient to ensure a grafting
level of 30% by weight of C60 in the hybrid material. The fullerene/silica hybrid material shows a remarkable thermal stability, since the early decomposition
starts above 300 °C as measured by DTG and DTA. The chemical structure of the fullerene/silica hybrid material was determined
by FT-IR spectroscopy and with solid state 13C CP-MAS NMR. The potential application of such materials has been outlined.
Authors:Ekkachai Kanchanatip, Nurak Grisdanurak, Raumporn Thongruang, and Arthit Neramittagapong
transition metal ions have been applied. Vanadium (V) is one of transition metals which has been of interest to researchers, for it has narrowed the band gap to 2.89 eV [ 9 ]. Additionally, it is known that fullerene (C 60 ) is known to have good electron
Nuclear and radiochemistry offers special and attractive possibilities for exploring the fascinating world of closed-shell carbon cages called fullerenes. This review presents a panoramic view on the use of radioactivity, nuclear irradiation and instrumental nuclear techniques in the elucidation of the structure and composition of fullerenes and their compounds.
Authors:N. Dragoe, K. Nakahara, L. Xiao, H. Shimotani, and K. Kitazawa
The thermal decomposition of methano-fullerene derivatives such as ethoxycarbonyl methano fullerene and various isomers
of bis-(ethoxycarbonyl methano) fullerene leads to new fullerene derivatives, which have been preliminary characterized.
The analysis of separated species was performed by UV-VIS, IR, H- and C-NMR, STM, FAB, LDI and MALDI-TOF MS spectroscopy.
One of the isolated phases is a C122 molecule with a dumbbell-like structure.
Authors:S. Watanabe, T. Katabuchi, N. Ishioka, S. Matsuhashi, and H. Muramatsu
Endohedral 133Xe-higher fullerenes (133Xe@C76 and 133Xe@C84) were produced by implantation of 133Xe ions using an isotope separator. A high performance liquid chromatography (HPLC) analysis showed that the peak of endohedral
133Xe-higher fullerenes shifted backward from that of empty fullerenes, suggesting a possibility of the separation of endohedral
133Xe-higher fullerenes from empty fullerenes. The yields of endohedral 133Xe-fullerenes were in the order of 133Xe@C76<133Xe@C84<133Xe@C60<133Xe@C70.
Authors:T. Ohtsuki, K. Masumoto, K. Sueki, K. Shikano, and T. Shigematsu
Fullerenes, C60 and C70, were irradiated by 8 and 10 MeV deuterons. The irradiated samples were dissolved in CS2 and filtered to remove insoluble by-products. Finally, radioactive fullerenes and products, such as fullerene dimers, trimers
labeled with13N, were isolated and detected in the liquid phase by radiochromatography. This suggests that the energy rich13N atoms successfully incorporated into the fullerene cages and that the disrupted cages reacted with neighboring cages.
Authors:S. Watanabe, N. Ishioka, T. Sekine, A. Osa, M. Koizumi, H. Shimomura, K. Yoshikawa, and H. Muramatsu
Ion implantation was applied to the production of endohedral 133Xe-fullerene. Using an isotope separator, 133Xe ions were implanted into a fullerene target of C60 and C70 produced by vacuum evaporation on a Ni backing. An HPLC analysis following dissolution of the fullerene targets in o-dichlorobenzene corroborated the formation of 133Xe@C60 and 133Xe@C70, showing a strong correlation between C60/C70 and 133Xe. The observed tailing following 133Xe peaks in the elution curves suggests a possibility of the isolation of endohedral 133Xe-fullerene from empty fullerene.
Authors:H. Nakahara, K. Sueki, W. Sato, and K. Akiyama
Radiochemical techniques have been applied in various ways to the study of fullerenes and metallofullerenes for the past several years, and they have provided invaluable information pertaining to the stability, structures, and formation of the novel carbon material. This paper reviews those experimental results that have fully shown the usefulness and uniqueness of radionuclides demonstrated in the field of fullerene science.
Authors:X. Han, Y. Hu, Z. Lin, S. Li, F. Zhao, Z. Liu, J. Yi, L. Zhang, and X. Ren
Effects of fullerenes including FS, EFS and pure C60 on thermal behaviors of polyethylene glycol (PEG) have been studied by employing thermogravimetry-differential thermogravimetry
(TG-DTG), differential scanning calorimeter (DSC) and off-line furnace-type pyrolysis-gas chromatography/mass spectrometry
(Py-GC/MS). The products were collected by Cambridge filter pad which was widely used in analyzing the combustion products
of cigarette. The results showed that the addition of fullerenes obviously restrained the thermal decomposition of PEG. The
initial decomposition temperatures (IDT) and maximum decomposition peak temperatures (MDT) were evidently postponed by the
addition of fullerenes. Pyrolysis products with one or two hydroxyl end groups obviously increased with the addition of 10%
C60. The reasons of the changes were discussed from the aspects of reaction mechanisms.