نتایج جستجو برای: c20 fullerenes

تعداد نتایج: 5000  

Journal: :Journal of computational chemistry 2015
Rebecca Sure Ralf Tonner Peter Schwerdtfeger

The most stable fullerene structures from C20 to C60 are chosen to study the energetics and geometrical consequences of encapsulating the rare gas elements He, Ne, or Ar inside the fullerene cage using dispersion corrected density functional theory. An exponential increase in stability is found with increasing number of carbon atoms. A similar exponential law is found for the volume expansion o...

Journal: :International journal of computational biology and drug design 2013
Sergey Shityakov Carola Förster

P-glycoprotein (P-gp)-mediated efflux system plays an important role to maintain chemical balance in mammalian cells for endogenous and exogenous chemical compounds. However, despite the extensive characterisation of P-gp potential interaction with drug-like molecules, the interaction of carbon nanoparticles with this type of protein molecule is poorly understood. Thus, carbon nanoparticles wer...

2007
Ferenc Simon Rudolf Pfeiffer

The hollow inside of single-wall carbon nanotubes (SWCNT) provides a unique degree of freedom to investigate chemical reactions inside this confined environment and to study the tube properties. It is reviewed herein, how encapsulating fullerenes, magnetic fullerenes, C isotope enriched fullerenes and organic solvents inside SWCNTs enables to yield unprecedented insight into their electronic, o...

2010
Haiying He Ravindra Pandey Ihsan Boustani Shashi P. Karna

Electron transport properties of B-fullerenes, B80 and B100, are investigated with the use of the first-principles density functional theory (DFT), in conjunction with the Landauer-Büttiker formalism and compared with C-fullerene, C60, under similar conditions. The differential conductance and the tunnel current for B-fullerenes sandwiched between Au contacts are calculated to be much higher th...

Journal: :Nature nanotechnology 2007
Albert G Nasibulin Peter V Pikhitsa Hua Jiang David P Brown Arkady V Krasheninnikov Anton S Anisimov Paula Queipo Anna Moisala David Gonzalez Günther Lientschnig Abdou Hassanien Sergey D Shandakov Giulio Lolli Daniel E Resasco Mansoo Choi David Tománek Esko I Kauppinen

Both fullerenes and single-walled carbon nanotubes (SWNTs) exhibit many advantageous properties. Despite the similarities between these two forms of carbon, there have been very few attempts to physically merge them. We have discovered a novel hybrid material that combines fullerenes and SWNTs into a single structure in which the fullerenes are covalently bonded to the outer surface of the SWNT...

1999
Mikhail Shtogrin

We explore some generalizations of fullerenes Fv (simple polyhedra with v vertices and only 5and -gonal faces) seen as (d−1)dimensional simple manifolds (preferably, spherical or polytopal) with only 5and 6-gonal 2-faces. First, finite and planar (infinite) 3-fullerenes are described. Three infinite families of spherical 4fullerenes are presented in Sections 4-6. The Construction A gives 4-poly...

2004
Anish Goel Jack B. Howard John B. Vander Sande

Individual fullerene molecules were observed and sized using high resolution transmission electron microscopy. Fullerene C60 molecules were tethered by chemical bonding to carbon black particles to facilitate HRTEM imaging and sizing of known fullerenes. HRTEM analysis of soot samples from a fullerene-forming flame revealed the presence of a range of fullerenes from C36 to C176 and larger fulle...

Journal: :REVIEWS ON ADVANCED MATERIALS SCIENCE 2018

Journal: :Chemistry Letters 2015

Journal: :Journal of the American Society of Nephrology : JASN 1998
R A Zager D S Conrad K Burkhart

UNLABELLED Ceramide is an important signaling molecule that is typically generated via sphingomyelinase (SMase)-mediated sphingomyelin (SM) hydrolysis. Although diverse forms of renal injury elicit ceramide accumulation, the molecular determinants of this change and its contribution to tissue damage are poorly defined. The present study uses iron (Fe/hydroxyquinoline)-mediated injury of culture...

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