نتایج جستجو برای: multi wall carbon nanotube

تعداد نتایج: 898699  

Journal: :Science 2003
Kinneret Keren Rotem S Berman Evgeny Buchstab Uri Sivan Erez Braun

The combination of their electronic properties and dimensions makes carbon nanotubes ideal building blocks for molecular electronics. However, the advancement of carbon nanotube-based electronics requires assembly strategies that allow their precise localization and interconnection. Using a scheme based on recognition between molecular building blocks, we report the realization of a self-assemb...

Journal: :gastroenterology and hepatology from bed to bench 0
fariba ghasemvand esmaeil biazar sara tavakolifard mohammad khaledian saeid rahmanzadeh daruosh momenzadeh

aim : the aim of this study is to design multi-walled carbon nanotubes (mwcnts) loaded with paclitaxel (ptx) anti-cancer drug and investigate its anti-cancerous efficacy of human gastric cancer. the sidewall surfaces of pristine mwcnts are highly hydrophobic. a major goal in carbon nanotube chemistry has been functionalization for aqueous solubility, and exploiting nano-tubes as macromolecules ...

Journal: :inorganic chemistry research 0
mehdi araghi department of chemistry, saveh branch, islamic azad university, saveh, iran shaghayegh aghamohammad department of chemistry, saveh branch, islamic azad university, saveh, iran

in the present work, highly efficient oxidation of sulfides catalyzed by moo2(acac)2 supported on multi-wall carbon nanotubes, mwcnts, modified with 1,2-diaminobenzene (dab) and 2-aminophenol (ap), at room temperature are reported. the effects of various parameters such as reaction time, solvent, catalyst amount, oxidant, etc, were studied. these heterogenized catalysts showed high activity in ...

Journal: :journal of physical & theoretical chemistry 2010
navid nasirizadeh mohammad saber tehrani m. reza. shishehbore ah karimi mohammad. a. shirgholami

a new hydroxylamine sensor has been fabricated by immobilizing oxadiazol denvative at the surface ol aglassy carbon electrode (gce) modified by multi-wall carbon nanotube (mivcnt). the adsorbed thin illms oroxadiazol derivative on the mwcnt modified gce show a pair of peaks with surface confined characierisnus.the oxadiazol derivative mwcni (omwcnt) modified gce shows highly catalytic activity ...

Journal: :inorganic chemistry research 2014
mehdi araghi shaghayegh aghamohammad

in the present work, highly efficient oxidation of sulfides catalyzed by moo2(acac)2 supported on multi-wall carbon nanotubes, mwcnts, modified with 1,2-diaminobenzene (dab) and 2-aminophenol (ap), at room temperature are reported. the effects of various parameters such as reaction time, solvent, catalyst amount, oxidant, etc, were studied. these heterogenized catalysts showed high activity in ...

2013
Kaiyuan Li Gyula Eres Jane Howe Yen-Jun Chuang Xufan Li Zhanjun Gu Litong Zhang Sishen Xie Zhengwei Pan

The rolling up of a graphene sheet into a tube is a standard visualization tool for illustrating carbon nanotube (CNT) formation. However, the actual processes of rolling up graphene sheets into CNTs in laboratory syntheses have never been demonstrated. Here we report conformal growth of graphene by carbon self-assembly on single-wall and multi-wall CNTs using chemical vapor deposition (CVD) of...

Journal: :Chemical communications 2007
Beatriz Ballesteros Stéphane Campidelli Gema de la Torre Christian Ehli Dirk M Guldi Maurizio Prato Tomas Torres

We report the synthesis, characterization and photophysical features of a new nanometer scale carbon nanostructure, that is, a single-wall carbon nanotube bearing phthalocyanine chromophores.

2000
K. TSUKAGOSHI B. W. ALPHENAAR

We present transport measurements of ferromagnetically contacted carbon nanotubes. In both singleand multi-walled nanotube devices, a spin valve effect is observed due to spin-polarized transport. In one single-walled nanotube device, the spin-valve effect is suppressed as the influence of Coulomb charging is observed at around 10 K. To help understand the interplay between the Coulomb charging...

2010
Jun Ha Lee Oh Kuen Kwon Ho Jung Hwang Jeong Won Kang

We introduce intertube interactions of a cantilevered triple-walled carbon-nanotube (TWCNT) resonators via classical molecular dynamics simulations. The fundamental frequencies of TWCNT resonators were less than those of singleand double-walled carbon nanotubes of a given diameter because of the increasing intertube disturbance. Our results imply that for a nanotube with a given diameter, the f...

Journal: :The journal of physical chemistry. B 2006
Xiaojun Li Wei Chen Qiwen Zhan Liming Dai Laura Sowards Mark Pender Rajesh R Naik

The interactions of various polypeptides with individual carbon nanotubes (CNTs), both multiwall (MW) and single wall (SW), were investigated by atomic force microscopy (AFM). While adhesion forces arising from electrostatic attraction interactions between the protonated amine groups of polylysine and carboxylic groups on the acid-oxidized multi-wall carbon nanotubes (Ox-MWCNTs) dominate the in...

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