نتایج جستجو برای: nano structures of fullerene c30

تعداد نتایج: 21196049  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2002
Vasilios Georgakilas Federica Pellarini Maurizio Prato Dirk M Guldi Manuel Melle-Franco Francesco Zerbetto

Four ionic fullerene derivatives, which are relatively soluble in polar solvents, are shown to organize into morphologically different nanoscale structures. Spheres, nanorods, and nanotubules form in water depending on the side chain appendage of the fullerene spheroid. Images at different nanoscale structures were obtained via transmission electron microscopy. Also, computer simulations were u...

Journal: :international journal of nanoscience and nanotechnology 2008
h. delavari amrei m. r. mehrnia a. ghanizadeh m. m. montazer-rahmati

volumetric techniques were employed to study the adsorption of co2 on a purified multi-wall carbon nanotubes (mwnt’s) sample, as a mesoporous material, at isothermal conditions of 288, 293 and 298 k and pressures ranging from 30 to 150 kpa. langmuir, freundlich and sips equations were used to represent the isotherms. also the parameters of these fitted isotherm models have been determined. the ...

Journal: :THE REVIEW OF HIGH PRESSURE SCIENCE AND TECHNOLOGY 1994

پایان نامه :0 1375

this study examines the effetivenss of task-based activities in helping students learn english language structures for a better communication. initially, a michigan test was administered to the two groups of 52 students majoring in english at the allameh ghotb -e- ravandi university to ensure their homogeneity. the students scores on the grammar part of this test were also regarded as their pre...

2011
Andrey F. Mironov

The review focuses current research in the rapidly developing chemistry of porphyrin-fullerene complexes, and highlights recent advances in the synthesis, properties, and potential applications of this family. An overview of the most popular methods to prepare porphyrin complexes with C60 fullerene exhibiting various types of linkage is given with the main focus on the Prato reaction and its mo...

Journal: :The Journal of chemical physics 2008
Soohaeng Yoo N Shao X C Zeng

We performed a constrained search, combined with density-functional theory optimization, of low-energy geometric structures of silicon clusters Si(39), Si(40), Si(50), Si(60), Si(70), and Si(80). We used fullerene cages as structural motifs to construct initial configurations of endohedral fullerene structures. For Si(39), we examined six endohedral fullerene structures using all six homolog C(...

2015
Fabian Dielmann Matthias Fleischmann Claudia Heindl Eugenia V Peresypkina Alexander V Virovets Ruth M Gschwind Manfred Scheer

The formation of reversible switchable nanostructures monitored by solution and solid-state methods is still a challenge in supramolecular chemistry. By a comprehensive solid state and solution study we demonstrate the potential of the fivefold symmetrical building block of pentaphosphaferrocene in combination with Cu(I) halides to switch between spheres of different porosity and shape. With in...

Journal: :Soft matter 2014
Jules J VanDersarl Shafigh Mehraeen Alia P Schoen Sarah C Heilshorn Andrew J Spakowitz Nicholas A Melosh

Clathrin is a three-legged protein complex that assembles into lattice structures on the cell membrane and transforms into fullerene-like cages during endocytosis. This dynamic structural flexibility makes clathrin an attractive building block for guided assembly. The assembly dynamics and the mechanical properties of clathrin protein lattices are studied using rheological measurements and theo...

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...

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