Crystalline C60 and amorphous graphite-like films of nanocolumn arrays fabricated by glancing angle deposition of C60 fullerene at substrate temperatures of -425 K were studied by transmission electron microscopy (TEM) and atomic-force microscopy (AFM). Characteristic dimension of columns is 200-400 nm. We used co-deposition of C60 molecules and accelerated C60 ions to modify the structure and properties of nanocolumn arrays. Influence of incidence angle for C60 ions on formation of film morphology was revealed. Raman spectrum analysis showed that amorphous carbon nanocolumns consist of nanographite areas with average size of -1.5 nm. The films have high conductivity (close to graphite) and have no mechanical stresses. The carbon films were applied in all-solid-state rechargeable thin-film battery as an anode layer. The nanocolumn amorphous carbon film as anode electrode showed the discharge capacity of about 50 microAh cm(-2)microm(-1) and good cycling ability over 100 times in full cell system.
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http://dx.doi.org/10.1166/jnn.2012.5821 | DOI Listing |
Int J Mol Sci
November 2024
School of Science, Northeast Electric Power University, Jilin 131200, China.
Confining protons into an enclosed carbon cage is expected to give rise to unique electronic properties for both the inner proton and the outer cage. In this work, we systematically investigated the geometric and electronic structures of cationic X@C (X = H, HO, and NH), and their corresponding neutral species (X = HO, NH), by quantum chemical density functional theory calculations. We show that C can trap HO, NH, HO and NH at the cage center and only slightly influence their geometries.
View Article and Find Full Text PDFFront Biosci (Landmark Ed)
October 2024
Laboratory of molecular biology, Research Centre for Medical Genetics, 115478 Moscow, Russia.
Background: The new synthesized water-soluble derivatives of C fullerenes are of a great interest to researchers since they can potentially be promising materials for drug delivery, bioimaging, biosonding, and tissue engineering. Surface functionalization of fullerene derivatives changes their chemical and physical characteristics, increasing their solubility and suitability for different biological systems applications, however, any changes in functionalized fullerenes can modulate their cytotoxicity and antioxidant properties. The toxic or protective effect of fullerene derivatives on cells is realized through the activation or inhibition of genes and proteins of key signaling pathways in cells responsible for regulation of cellular reactive oxygen species (ROS) level, proliferation, and apoptosis.
View Article and Find Full Text PDFAnal Bioanal Chem
November 2024
Institute of Organic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany.
Positive-ion laser desorption/ionization (LDI) of fullerenes contained in soot as produced by the Krätschmer-Huffman process delivers a wide range of fullerene molecular ions from C to above C. Here, the collision cross section (CCS) values of those fullerene molecular ions are determined using a trapped ion mobility-quadrupole-time-of-flight (TIMS-Q-TOF) instrument. While CCS values in the range from C to C are already known with high accuracy, those of ions from C onward had yet to be determined.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P.R. China.
Metal clusters, due to their small dimensions, contain a high proportion of surface atoms, thus possessing a significantly improved catalytic activity compared with their bulk counterparts and nanoparticles. Defective and modified carbon supports are effective in stabilizing metal clusters, however, the synthesis of isolated metal clusters still requires multiple steps and harsh conditions. Herein, we develop a C fullerene-driven spontaneous metal deposition process, where C serves as both a reductant and an anchor, to achieve uniform metal (Rh, Ir, Pt, Pd, Au and Ru) clusters without the need for any defects or functional groups on C.
View Article and Find Full Text PDFSci Total Environ
October 2024
School of Space and Environment, Beihang University, No. 37, XueYuan Road, HaiDian District, Beijing 100191, PR China. Electronic address:
Widely-used C fullerene nanoparticles (C) result in their release into the aquatic environment, which may affect the distribution and toxicity of pollutants such as arsenic (As), to aquatic organism. In this study, arsenate (As(V)) accumulation, speciation and subcellular distribution was determined in Danio rerio (zebrafish) intestine, head and muscle tissues in the presence of C. Meanwhile we compared how single-walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs), graphene oxide (GO) and graphene (GN) nanoparticles alter the behaviors of As(V).
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