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Lebedev VT, Charykov NA, Shemchuk OS, Murin IV, Nerukh DA, Petrov AV, Maystrenko DN, Molchanov OE, Sharoyko VV, Semenov KN. Endometallofullerenes and their derivatives: Synthesis, Physicochemical Properties, and Perspective Application in Biomedicine. Colloids Surf B Biointerfaces 2023. [DOI: 10.1016/j.colsurfb.2023.113133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Ohtsuki T, Manjanath A, Ohno K, Inagaki M, Sekimoto S, Kawazoe Y. Creation of Mo/Tc@C 60 and Au@C 60 and molecular-dynamics simulations. RSC Adv 2021; 11:19666-19672. [PMID: 35479210 PMCID: PMC9033558 DOI: 10.1039/d0ra10196f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 05/19/2021] [Indexed: 02/05/2023] Open
Abstract
The formation of middle- and/or high-weight atom (Mo, Au)-incorporated fullerenes was investigated using radionuclides produced by nuclear reactions. From the trace radioactivities of 99Mo/99mTc or 194Au after high-performance liquid chromatography, it was found that the formation of endohedral and/or heterofullerene fullerenes in 99Mo/99mTc and 194Au atoms could occur by a recoil process following the nuclear reactions. Furthermore, the 99mTc (and 194Au) atoms recoiled against β-decay remained present inside these cages. To confirm the produced materials experimentally, ab initio molecular dynamics (MD) simulations based on an all-electron mixed-basis approach were performed. The possibility of the formation of endohedral fullerenes containing Mo/Tc and Au atoms is verified; here, the formation of heterofullerenes is excluded by MD simulations. These findings suggest that radionuclides stably encapsulated by fullerenes could potentially play a valuable role in diagnostic nuclear medicine. The formation of Mo, Au-incorporated fullerenes was investigated using radionuclides produced by nuclear reactions and using AIMD simulations. The possibility of the formation of endohedral fullerenes containing Mo/Tc and Au atoms is verified.![]()
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Affiliation(s)
- Tsutomu Ohtsuki
- Institute for Integrated Radiation and Nuclear Science
- Kyoto University
- Osaka 590-0494
- Japan
| | | | - Kaoru Ohno
- Department of Physics
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Makoto Inagaki
- Institute for Integrated Radiation and Nuclear Science
- Kyoto University
- Osaka 590-0494
- Japan
| | - Shun Sekimoto
- Institute for Integrated Radiation and Nuclear Science
- Kyoto University
- Osaka 590-0494
- Japan
| | - Yoshiyuki Kawazoe
- New Industry Creation Hatchery Center
- Tohoku University
- Sendai 980-8579
- Japan
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Wang YR, Tao ML, Chao-Ke M, Wang ZL, Yang DX, Shi MX, Sun K, Yang JY, Wang JZ. Structure transition of a C 60 monolayer on the Bi(111) surface. RSC Adv 2021; 11:14148-14153. [PMID: 35423925 PMCID: PMC8697672 DOI: 10.1039/d1ra00900a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 03/31/2021] [Indexed: 12/02/2022] Open
Abstract
The interfacial structures of C60 molecules adsorbed on solid surfaces are essential for a wide range of scientific and technological processes in carbon-based nanodevices. Here, we report structural transitions of the C60 monolayer on the Bi(111) surface studied via low-temperature scanning tunneling microscopy (STM). With an increase in temperature, the structure of the C60 monolayer transforms from local-order structures to a (√93 × √93) R20° superstructure, and then to a (11 × 11) R0° superstructure. Moreover, the individual C60 molecules in different superstructures have different orientations. C60 molecules adopt the 6 : 6 C–C bond and 5 : 6 C–C bond facing-up, mixed orientations, and hexagon facing-up in the local-order structure, (√93 × √93) R20°, and (11 × 11) R0° superstructure, respectively. These results shed important light on the growth mechanism of C60 molecules on solid surfaces. With the increase in temperature, the structure of the C60 monolayer on the Bi(111) substrate transforms from local-order structures to a (√93 × √93) R20° superstructure, and then to a (11 × 11) R0° superstructure.![]()
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Affiliation(s)
- Ya-Ru Wang
- School of Physical Science and Technology
- Southwest University
- Chongqing
- China
| | - Min-Long Tao
- School of Physical Science and Technology
- Southwest University
- Chongqing
- China
| | - Ma Chao-Ke
- School of Physical Science and Technology
- Southwest University
- Chongqing
- China
| | - Zi-Long Wang
- School of Physical Science and Technology
- Southwest University
- Chongqing
- China
| | - Da-Xiao Yang
- School of Physical Science and Technology
- Southwest University
- Chongqing
- China
| | - Ming-Xia Shi
- School of Physical Science and Technology
- Southwest University
- Chongqing
- China
| | - Kai Sun
- School of Physical Science and Technology
- Southwest University
- Chongqing
- China
| | - Ji-Yong Yang
- School of Physical Science and Technology
- Southwest University
- Chongqing
- China
| | - Jun-Zhong Wang
- School of Physical Science and Technology
- Southwest University
- Chongqing
- China
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Bibikov AV, Nikolaev AV, Tkalya EV. Chemical bonding between thorium atoms and a carbon hexagon in carbon nanomaterials. Phys Chem Chem Phys 2020; 22:22501-22507. [PMID: 32996959 DOI: 10.1039/d0cp03970e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We explore the unusual nature of chemical bonding of thorium atoms with a ring of six carbon atoms (hexagon) in novel carbon materials. Our ab initio calculations of Th-based metallofullerenes (Th@C60 and Th@C20) and Th bound to benzene or coronene at the Hartree-Fock level with the second order perturbation (MP2) correction accounting for the van der Waals interactions demonstrate that the optimal position of the thorium atom is where it faces the center of a hexagon and is located at a distance of 2.01-2.07 Å from the center. For Th encapsulated in C60 it is found at 2.01 Å, whereas the other local energy minima are shifted to larger energies (0.22 eV and higher). Inside C60 the highest local minimum at 1.17 eV is observed when Th faces the center of the five member carbon ring (pentagon). Based on our calculations for Th with benzene and coronene where the global minimum for Th corresponds to its position at 2.05 Å (benzene) or 2.02 Å (coronene) from the hexagon center, we conclude that a well pronounced minimum is likely to be present in graphene and in a single wall carbon nanotube. The ground state of Th is singlet, and other high spin states (triplet and quintet) lie higher in energy (>1.62 eV). We discuss a potential use of carbon nanomaterials with the 229Th isotope having its nuclear transition in the optical range, for metrological purposes.
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Affiliation(s)
- A V Bibikov
- Skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State University, Moscow 119991, Russia
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Kuganathan N, Srikaran R, Chroneos A. Stability of Coinage Metals Interacting with C 60. NANOMATERIALS 2019; 9:nano9101484. [PMID: 31635324 PMCID: PMC6836103 DOI: 10.3390/nano9101484] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/16/2019] [Accepted: 10/17/2019] [Indexed: 02/07/2023]
Abstract
Buckminsterfullerene (C60) has been advocated as a perfect candidate material for the encapsulation and adsorption of a variety of metals and the resultant metallofullerenes have been considered for the use in different scientific, technological and medical areas. Using spin-polarized density functional theory together with dispersion correction, we examine the stability and electronic structures of endohedral and exohedral complexes formed between coinage metals (Cu, Ag and Au) and both non-defective and defective C60. Encapsulation is exoergic in both forms of C60 and their encapsulation energies are almost the same. Exohedral adsorption of all three metals is stronger than that of endohedral encapsulation in the non-defective C60. Structures and the stability of atoms interacting with an outer surface of a defective C60 are also discussed. As the atoms are stable both inside and outside the C60, the resultant complexes can be of interest in different scientific and medical fields. Furthermore, all complexes exhibit magnetic moments, inferring that they can be used as spintronic materials.
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Affiliation(s)
- Navaratnarajah Kuganathan
- Department of Materials, Imperial College London, London SW7 2AZ, UK.
- Faculty of Engineering, Environment and Computing, Coventry University, Priory Street, Coventry CV1 5FB, UK.
| | - Ratnasothy Srikaran
- Department of Chemistry, University of Jaffna, Sir. Pon Ramanathan Road, Thirunelvely, Jaffna 40000, Srilanka.
| | - Alexander Chroneos
- Department of Materials, Imperial College London, London SW7 2AZ, UK.
- Faculty of Engineering, Environment and Computing, Coventry University, Priory Street, Coventry CV1 5FB, UK.
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Ohno K, Manjanath A, Kawazoe Y, Hatakeyama R, Misaizu F, Kwon E, Fukumura H, Ogasawara H, Yamada Y, Zhang C, Sumi N, Kamigaki T, Kawachi K, Yokoo K, Ono S, Kasama Y. Extensive first-principles molecular dynamics study on Li encapsulation into C 60 and its experimental confirmation. NANOSCALE 2018; 10:1825-1836. [PMID: 29308793 DOI: 10.1039/c7nr07237f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The aim of increasing the production ratio of endohedral C60 by impinging foreign atoms against C60 is a crucial matter of the science and technology employed towards industrialization of these functional building block materials. Among these endohedral fullerenes, Li+@C60 exhibits a wide variety of physical and chemical phenomena and has the potential to be applicable in areas spanning the medical field to photovoltaics. However, currently, Li+@C60 can be experimentally produced with only ∼1% ratio using the plasma shower method with a 30 eV kinetic energy provided to the impinging Li+ ion. From extensive first-principles molecular dynamics simulations, it is found that the maximum production ratio of Li+@C60 per hit is increased to about 5.1% (5.3%) when a Li+ ion impinges vertically on a six-membered ring of C60 with 30 eV (40 eV) kinetic energy, although many C60 molecules are damaged during this collision. On the contrary, when it impinges vertically on a six-membered ring with 10 eV kinetic energy, the production ratio remains at 1.3%, but the C60 molecules are not damaged at all. On the other hand, when the C60 is randomly oriented, the production ratio reduces to about 3.7 ± 0.5%, 3.3 ± 0.5%, and 0.2 ± 0.03% for 30 eV, 40 eV, and 10 eV kinetic energy, respectively. Based on these observations we demonstrate the possibility of increasing the production ratio by fixing six-membered rings atop C60 using the Cu(111) substrate or UV light irradiation. In order to assess the ideal experimental production ratio, the 7Li solid NMR spectroscopy measurement is also performed for the multilayer randomly oriented C60 sample irradiated by Li+ using the plasma shower method combined with inductively coupled plasma atomic emission spectroscopy (ICP-AES). Time-of-flight mass spectroscopy measurements are also performed to cross check whether Li+@C60 molecules are produced in the sample. The resulting experimental estimate, 4% for 30 eV incident kinetic energy, fully agrees with our simulation results mentioned above, suggesting the consistency and accuracy of our simulations and experiments.
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Affiliation(s)
- K Ohno
- Department of Physics, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan.
| | - A Manjanath
- Department of Physics, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan.
| | - Y Kawazoe
- New Industry Creation Hatchery Center, Tohoku University, 6-6-4 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan and Department of Physics and Nanotechnology, SRM University, Kattankulathur 603203, Tamil Nadu, India
| | - R Hatakeyama
- Department of Electronic Engineering, Tohoku University, 6-6-5 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - F Misaizu
- New Industry Creation Hatchery Center, Tohoku University, 6-6-4 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan and Department of Chemistry, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - E Kwon
- New Industry Creation Hatchery Center, Tohoku University, 6-6-4 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan and Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - H Fukumura
- Department of Chemistry, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - H Ogasawara
- Graduate School of Pharmaceutical Science, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Y Yamada
- Division of Applied Physics, University of Tsukuba, 1-1-1 Ten'nodai, Tsukuba, Ibaraki 305-8573, Japan
| | - C Zhang
- Division of Applied Physics, University of Tsukuba, 1-1-1 Ten'nodai, Tsukuba, Ibaraki 305-8573, Japan
| | - N Sumi
- Division of Applied Physics, University of Tsukuba, 1-1-1 Ten'nodai, Tsukuba, Ibaraki 305-8573, Japan
| | - T Kamigaki
- Idea International Corporation, 1-15-35 Sagigamori, Aoba-ku, Sendai 981-0922, Japan
| | - K Kawachi
- Idea International Corporation, 1-15-35 Sagigamori, Aoba-ku, Sendai 981-0922, Japan
| | - K Yokoo
- Idea International Corporation, 1-15-35 Sagigamori, Aoba-ku, Sendai 981-0922, Japan
| | - S Ono
- Idea International Corporation, 1-15-35 Sagigamori, Aoba-ku, Sendai 981-0922, Japan
| | - Y Kasama
- Idea International Corporation, 1-15-35 Sagigamori, Aoba-ku, Sendai 981-0922, Japan
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Dhiman S, Kumar R, Dharamvir K. Optimized interaction parameters for metal-doped endohedral fullerene. APPLIED NANOSCIENCE 2017. [DOI: 10.1007/s13204-017-0556-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Zhao HY, Liu KM, Wang J, Han HY, Liu Y. The doorsill of fullerene. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2012.11.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Whitener KE. Theoretical studies of CH4 inside an open-cage fullerene: translation-rotation coupling and thermodynamic effects. J Phys Chem A 2010; 114:12075-82. [PMID: 20973471 DOI: 10.1021/jp104601g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Molecules trapped inside fullerenes exhibit interesting quantum behavior, including quantization of their translational degrees of freedom. In this study, a theoretical framework for predicting quantum properties of nonlinear small molecules in nonsymmetric open-cage fullerenes (OCFs) has been described along the lines of similar theories which treat small molecules inside C(60) and clathrate cages. As an example, the coupled translational-rotational energy structure has been calculated for the case of CH(4) inside a known OCF. The calculated energy levels have been used to calculate the equilibrium fraction of incorporated CH(4) as well as the translational heat capacity for the encapsulated molecule. The heat capacity shows an anomalous maximum at 239 K for CH(4) and 215 K for CD(4) which are not present in free methane.
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Affiliation(s)
- Keith E Whitener
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, USA.
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10
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Shigeta Y. Molecular Theory Including Quantum Effects and Thermal Fluctuations. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2009. [DOI: 10.1246/bcsj.82.1323] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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11
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Erkol H, Demiralp E. Exact solutions for a Hamiltonian with the Morse potential and the Dirac delta shell interactions. Mol Phys 2009. [DOI: 10.1080/00268970903140441] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Zhang Z, Zhao Y, Chai Z. Applications of radiotracer techniques for the pharmacology and toxicology studies of nanomaterials. Sci Bull (Beijing) 2009. [DOI: 10.1007/s11434-009-0016-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ohtsuki T, Ohno K, Morisato T, Mitsugashira T, Hirose K, Yuki H, Kasagi J. Radioactive decay speedup at T=5 K: electron-capture decay rate of (7)Be encapsulated in C(60). PHYSICAL REVIEW LETTERS 2007; 98:252501. [PMID: 17678017 DOI: 10.1103/physrevlett.98.252501] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2006] [Revised: 12/02/2006] [Indexed: 05/16/2023]
Abstract
The electron-capture (EC) decay rate of (7)Be in C(60) at the temperature of liquid helium (T=5 K) was measured and compared with the rate in Be metal at T=293 K. We found that the half-life of (7)Be in endohedral C(60) ((7)Be@C(60)) at a temperature close to T=5 K is 52.47+/-0.04 d, a value that is 0.34% faster than that at T=293 K. In this environment, the half-life of (7)Be is nearly 1.5% faster than that inside Be metal at room temperature (T=293 K). We then interpreted our observations in terms of calculations of the electron density at the (7)Be nucleus position inside the C(60); further, we estimate theoretically the temperature dependence (at T=0 K and 293 K) of the electron density at the Be nucleus position in the stable center inside C(60). The theoretical estimates were almost in agreement with the experimental observations.
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Affiliation(s)
- T Ohtsuki
- Laboratory of Nuclear Science, Tohoku University, Mikamine, Taihaku-ku, Sendai 982-0826, Japan
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Chi M, Han P, Fang X, Jia W, Liu X, Xu B. Density functional theory of Polonium-doped endohedral fullerenes Po@C60. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.theochem.2006.12.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Türker L, Gümüs S. MOLECULAR ORBITAL TREATMENT OF SOME ENDOHEDRALLY DOPED C60SYSTEMS. Polycycl Aromat Compd 2006. [DOI: 10.1080/10406630600642444] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Shigeta Y, Takatsuka K. Dynamic charge fluctuation of endohedral fullerene with coencapsulated Be atom and H2. J Chem Phys 2005; 123:131101. [PMID: 16223267 DOI: 10.1063/1.2055287] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
As one of the typical examples of characteristic reaction field generated in inclusion (enclosure) compounds, the dynamics of an endohedral metallofullerene, (Be+nH2)@C60(n=1,2), is studied with Be atom serving as a test probe. A very large dynamical and thermal fluctuation of electronic state of Be has been found, which is surprising since the highest occupied molecular orbital-lowest unoccupied molecular orbital gap of Be is so wide that such a large fluctuation in a low temperature is never expected. This finding demonstrates one of the special features of endohedral reaction field offered by the fullerene. The physical origin of this phenomenon is analyzed.
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Affiliation(s)
- Yasuteru Shigeta
- Department of Basic Science, Graduate School of Arts and Sciences, University of Tokyo, Komaba, 153-8902, Tokyo, Japan.
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Ren XY, Liu ZY, Zhu MQ, Zheng KL. DFT studies on endohedral fullerene C@C60: C centers the C60 cage. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.theochem.2004.09.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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Ohtsuki T, Yuki H, Muto M, Kasagi J, Ohno K. Enhanced electron-capture decay rate of 7Be encapsulated in C60 cages. PHYSICAL REVIEW LETTERS 2004; 93:112501. [PMID: 15447332 DOI: 10.1103/physrevlett.93.112501] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2004] [Indexed: 05/24/2023]
Abstract
The decay rate of 7Be electron capture was measured in C60 and Be metal with a reference method. The half-life of 7Be endohedral C60 ((7)Be@C(60)) and 7Be in Be metal (Be metal (7Be)) is found to be 52.68+/-0.05 and 53.12+/-0.05 days, respectively. This amounts to a 0.83% difference in electron-capture decay half-life between (7)Be@C(60) and Be metal (7Be). Our result is a reflection of the different electron wave functions for (7)Be@C(60) inside C60 compared to the situation when 7Be is in a Be metal.
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Affiliation(s)
- T Ohtsuki
- Laboratory of Nuclear Science, Tohoku University, 1-2-1 Mikamine, Taihaku, Sendai 982-0826, Japan
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Lu X, Grobis M, Khoo KH, Louie SG, Crommie MF. Spatially mapping the spectral density of a single C60 molecule. PHYSICAL REVIEW LETTERS 2003; 90:096802. [PMID: 12689248 DOI: 10.1103/physrevlett.90.096802] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2002] [Indexed: 05/24/2023]
Abstract
We have used scanning tunneling spectroscopy to spatially map the energy-resolved local density of states of individual C60 molecules on the Ag(100) surface. Spectral maps were obtained for molecular states derived from the C60 HOMO, LUMO, and LUMO+1 orbitals, revealing new details of the spatially inhomogeneous C60 local electronic structure. Spatial inhomogeneities are explained using ab initio pseudopotential density functional calculations. These calculations emphasize the need for explicitly including the C60-Ag interaction and STM tip trajectory to understand the observed C60 local electronic structure.
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Affiliation(s)
- Xinghua Lu
- Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA
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23
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Reinke P, Oelhafen P. Surface modification of C60 by ion irradiation studied with photoelectron spectroscopy. J Chem Phys 2002. [DOI: 10.1063/1.1476320] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Density functional theory studies of beryllium-doped endohedral fullerene Be@C60: on center displacement of beryllium inside the C60 cage. Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(01)01386-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Rausch H, Braun T. Sublimation behaviour of C60 and of the endohedral radiofullerenes formed by nuclear recoil implosion via neutron irradiation. Chem Phys Lett 2001. [DOI: 10.1016/s0009-2614(01)01156-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Kawazoe Y, Ohno K, Esfarjani K, Maruyama Y, Shiga K, Farajian A. Why the all-electron full-potential approach is suitable for calculations on fullerenes and nanotubes? J Mol Graph Model 2001; 19:270-4. [PMID: 11391880 DOI: 10.1016/s1093-3263(00)00089-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Already 30 years have passed since the first prediction of C60 by Professor Osawa. A family of cage-type fullerenes and carbon nanotubes were experimentally found as the third form of carbon molecules in the 1980s. After this discovery, much research has been conducted experimentally and theoretically on these new materials. The all-electron full-potential approach is important for fully understanding the quantum mechanical behavior of the fullerenes and related molecules. We show some results of band calculations and ab initio molecular dynamics.
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Affiliation(s)
- Y Kawazoe
- Institute for Materials Research (IMR), Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan.
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Khong A, Cross RJ, Saunders M. From 3He@C60 to 3H@C60: Hot-Atom Incorporation of Tritium in C60. J Phys Chem A 2000. [DOI: 10.1021/jp994289m] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anthony Khong
- Yale Chemistry Department, PO Box 208107, New Haven, Connecticut 06520-8107
| | - R. James Cross
- Yale Chemistry Department, PO Box 208107, New Haven, Connecticut 06520-8107
| | - Martin Saunders
- Yale Chemistry Department, PO Box 208107, New Haven, Connecticut 06520-8107
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Ohtsuki T, Ohno K, Shiga K, Kawazoe Y, Maruyama Y, Masumoto K. Systematic study of foreign-atom-doped fullerenes by using a nuclear recoil method and their MD simulation. J Chem Phys 2000. [DOI: 10.1063/1.480858] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Farajian AA, Ohno K, Esfarjani K, Maruyama Y, Kawazoe Y. Ab Initio study of dopant insertion into carbon nanotubes. J Chem Phys 1999. [DOI: 10.1063/1.479487] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ohtsuki T, Masumoto K, Tanaka T, Komatsu K. Formation of dimer, trimer, and tetramer of C60 and C70 by γ-ray, charged-particle irradiation, and their HPLC separation. Chem Phys Lett 1999. [DOI: 10.1016/s0009-2614(98)01454-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Direct synthesis of radioactive carbon labeled fullerences using nuclear reactions. J Radioanal Nucl Chem 1999. [DOI: 10.1007/bf02349557] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ring Opening Reactions of Fullerenes: Designed Approaches to Endohedral Metal Complexes. FULLERENES AND RELATED STRUCTURES 1999. [DOI: 10.1007/3-540-68117-5_2] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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Sueki K, Akiyama K, Kikuchi K, Nakahara H, Tomura K. Stability of radio-metallofullerenes against beta-decay. J Radioanal Nucl Chem 1999. [DOI: 10.1007/bf02349553] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Iglesias-Groth S, Breton J, Girardet C. Structure of the Van der Waals rare gas–C60 exohedral complexes [(C60)(RG)n; n=1,2]. Chem Phys 1998. [DOI: 10.1016/s0301-0104(98)00296-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Gadd GE, Schmidt P, Bowles C, McOrist G, Evans PJ, Wood J, Smith L, Dixon A, Easey J. Evidence for Rare Gas Endohedral Fullerene Formation from γ Recoil from HPLC Studies. J Am Chem Soc 1998. [DOI: 10.1021/ja9806276] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- G. E. Gadd
- Contribution from the Australian Nuclear Science and Technology Organisation, Private Mail Bag 1, Menai, NSW 2234, Australia
| | - P. Schmidt
- Contribution from the Australian Nuclear Science and Technology Organisation, Private Mail Bag 1, Menai, NSW 2234, Australia
| | - C. Bowles
- Contribution from the Australian Nuclear Science and Technology Organisation, Private Mail Bag 1, Menai, NSW 2234, Australia
| | - G. McOrist
- Contribution from the Australian Nuclear Science and Technology Organisation, Private Mail Bag 1, Menai, NSW 2234, Australia
| | - P. J. Evans
- Contribution from the Australian Nuclear Science and Technology Organisation, Private Mail Bag 1, Menai, NSW 2234, Australia
| | - J. Wood
- Contribution from the Australian Nuclear Science and Technology Organisation, Private Mail Bag 1, Menai, NSW 2234, Australia
| | - L. Smith
- Contribution from the Australian Nuclear Science and Technology Organisation, Private Mail Bag 1, Menai, NSW 2234, Australia
| | - A. Dixon
- Contribution from the Australian Nuclear Science and Technology Organisation, Private Mail Bag 1, Menai, NSW 2234, Australia
| | - J. Easey
- Contribution from the Australian Nuclear Science and Technology Organisation, Private Mail Bag 1, Menai, NSW 2234, Australia
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Sueki K, Kikuchi K, Tomura K, Nakahara H. Stability of metallofullerenes following neutron capture reaction on the metal ion. J Radioanal Nucl Chem 1998. [DOI: 10.1007/bf02389754] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Endohedral metallofullerenes. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s1075-1629(98)80007-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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