Fullerene
Mostrando 1-12 de 34 artigos, teses e dissertações.
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1. ESTRUTURAS DE FULERENOS: ESTABELECENDO INTERFACES NO ENSINO DE MATEMÁTICA E QUÍMICA EM NÍVEL SUPERIOR
The objective of this paper is to study fullerene geometry properties and attempt to stablish a dialogue between the teaching of mathematics and chemistry concepts using hands-on cardboard geometric models, in classroom, in order to facilitate the understanding of fullerene structures. This approach to the study of such molecules represents a unique opportun
Quím. Nova. Publicado em: 2017-09
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2. Poly(Vinyl Alcohol) Gate Dielectric Treated With Anionic Surfactant in C60 Fullerene-Based n-Channel Organic Field Effect Transistors
We report on the preparation and performance enhancement of n-type low-voltage organic field effect transistors (FETs) based on cross-linked poly(vinyl alcohol) (cr-PVA) as gate dielectric and C60 fullerene as channel semiconductor. Transistors were prepared using bottom-gate top-contact geometry and exhibited field-effect mobility (µFET) of 0.18 cm2V-1s-1.
Mat. Res.. Publicado em: 19/09/2016
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3. A Study on Equivalent Spherical Structure of Buckyball-C 60 Based on Continuum Shell Model
Abstract The main goal of this research is to extract a suitable continuum modeling of buckyball-C60. For this purpose, firstly the lattice structure of buckyball-C60 is modelled and subsequently a spherical structure equivalent to fullerene structure is considered. The fullerene structure modeled with shell elements is under internal pressure and in the con
Lat. Am. j. solids struct.. Publicado em: 2016-05
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4. Development of carbon-based nanomaterials indicators using the analytical tools and data provided by the web of science database
The recent rise of nanotechnology and nanomaterial research is marked by the huge amount of publications indexed in electronic databases, which can be evaluated using bibliometric indicators in order to help researchers find hidden trends, gain novel insights and support new scientific developments. Although in-depth analyses require specialized software and
Mat. Res.. Publicado em: 13/08/2013
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5. Assessing nanocellulose developments using science and technology indicators
This research aims to examine scientific and technological trends of developments in nanocellulose based on scientometric and patent indicators obtained from the Science Citation Index and Derwent Innovations Index in 2001-2010. The overall nanocellulose activity indicators were compared to nanotechnology and other selected nanomaterials. Scientific and tech
Mat. Res.. Publicado em: 05/03/2013
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6. Theoretical study of solid C60 and FeCl3 intercalated with CrO3 / Estudo teórico do C60 sólido intercalado com FeCl3 e CrO3
No presente trabalho estudamos as propriedades energeticas e eletronicas do solido C60, nas estruturas cubica de face centrada e cubica de corpo centrado, intercalado com as moleculas FeCl3 e CrO3, atraves de simulacão computacional de primeiros princípios baseada na teoria do funcional da densidade, implementada no programa computacional SIESTA. Este estu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2011
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7. Fulereno[C60]: química e aplicações
Fullerene chemistry has become a very active research field in the two last decades, largely because of the exceptional properties of the C60 molecule and the variety of fullerene derivatives that appear to be possible. In this review, a general analysis of fullerene C60 reactivity is performed. The principal methods for the covalent modification of this fas
Química Nova. Publicado em: 2010
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8. Síntese de derivados do fulereno-C60
Presently, C60 fullerene and its derivatives are of great importance in chemistry, mainly due to their physical properties and biological activities. One of the main problems related to C60 is its low solubility in the commonly used solvents, which limits its application. Aiming to study their physicochemical properties, 17 new C60 derivatives with appropria
Publicado em: 2010
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9. Termodinâmica de sistemas fullerênicos em soluções / Thermodynamic systems fullerenic solutions
In this work, we present a computational study of the solvation process of the C60 fullerene and its hydroxylated derivate, the fullerenol C60(OH)24, in aqueous environment and organic solvents, using classical molecular dynamics simulations. Diverse sets of parameters to the Lennard-Jones interaction potential have been utilized in simulations of fullerenes
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/09/2009
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10. Supramolecular chemistry of polymetallic porphyrazines / Desenvolvimento da química supramolecular de porfirazinas polimetaladas
Nesta tese foram perseguidos novos avanços no campo das tetrapiridilporfirazinas supramoleculares polimetaladas, visando explorar a maior capacidade de conjugação eletrônica esperada para essa classe de compostos, e seus reflexos nas propriedades eletrônicas e eletroquímicas. Foram apresentadas novas rotas sintéticas para obtenção de tetra(3,4-pirid
Publicado em: 2009
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11. How can encapsulated C60 fullerenes escape from a carbon nanotube?: A molecular dynamics simulation answer
This work aim is to determine how a C60 fullerene, encapsulated into a (10,10) carbon nanotube, can be ballistically expelled from it by using a colliding capsule. Initially, the C60 fullerene is positioned at rest inside the nanotube. The capsule, also starting from rest but outside of the nanotube, is put in a position such that it can be trapped towards t
Brazilian Journal of Physics. Publicado em: 2008-03
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12. Effect of triplet encapsulated atoms in [60] fullerenes: a theoretical analysis
The present investigation reports on the interaction of the C/O triplet atoms inside of the [60] fullerene (C60) species with small polar molecules (H²O, CH³OH, HF, NH³) using Density Functional Theory (DFT) calculations. The calculations show that in all the computed cases the encapuslated complexes with the molecules are more stable than without interna
Eclética Química. Publicado em: 2008