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https://riquim.fq.edu.uy/files/original/aa0fdf6765deda96e0b7ea7c7ec5920c.pdf
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https://riquim.fq.edu.uy/files/original/30de7ec46e186b8eaa84e1aeb18f77b7.jpg
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8
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3
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207
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153
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Bibliografía Nacional Química
Description
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Contiene la producción científica nacional de los profesionales químicos e investigadores, durante el período 1929 hasta la fecha.
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Departamento de Documentación y Biblioteca
RIQUIM
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PDF
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Title
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<strong>Labeling the defects of carbon nanotubes with thiol groups.</strong>
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NANOTUBOS DE CARBONO
ATOMOS
CINETICA DE REACCION
MICROSCOPIA ELECTRONICA
BIBLIOGRAFIA NACIONAL QUIMICA
2010
Abstract
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Herein, we investigate the reactivity of perfect and defective single-wall carbon nanotubes (SWCNTs) with the SH group using first principle periodic calculations. The presence of Stone–Wales (SW) defect sites significantly increases the reactivity of SWCNTs against the thiol group. The most reactive site for the addition of the SH radical is the single vacancy defect; the sulfur atom reconstructs the SWCNT framework and the hydrogen atom becomes attached to a carbon atom. The cluster model calculations performed for perfect SWCNTs confirmed a very low reactivity with the thiol group, even for the small diameter and metallic SWCNTs. The reaction between the perfect SWCNT and SH results thermodynamically unfavorable. The different reactivities observed for perfect and defective SWCNTs suggest that the SH group can be employed to perform a chemical labeling of the defect sites present in carbon nanotubes. The SH radical group is quite unique because, even though it has an unpaired electron, it does not react with sp2 carbon frameworks, unless they have defects or curvature similar to C60. The results are discussed in terms of the recent experimental investigations about thiolated SWCNTs. We were able to explain the Transmission Electron Microscopy images of thiolated nanotubes and the lack of reactivity at the tips. Finally, we discuss a possible route to synthesize sulfur-doped SWCNTs using thiol groups and their electronic properties.
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<a title="Curriculum" href="http://buscadores.anii.org.uy/buscador_sni/exportador/ExportarPdf?hash=330eeda61de9937431a7182c44a5ee24"><strong>Denis, Pablo A.</strong></a>
<a title="Curriculum" href="http://buscadores.anii.org.uy/buscador_sni/exportador/ExportarPdf?hash=fd97168d9e8b7d3f82474969b5b78453"><strong>Gancheff, Jorge S.</strong></a>
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Journal of Materials Science v. 45, no. 4, 2010. -- p. 1039-1045
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Springer
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2010
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<p><strong>Información sobre Derechos de Autor</strong></p>
<p>(Por favor lea este aviso antes de abrir los documentos u objetos)</p>
<p><strong>La legislación uruguaya</strong> protege el derecho de autor sobre toda creación literaria, científica o artística, tanto en lo que tiene que ver con sus derechos morales, como en lo referente a los derechos patrimoniales con sujeción a lo establecido por el derecho común y las siguientes leyes</p>
<p>(LEY 9.739 DE 17 DE DICIEMBRE DE 1937 SOBRE PROPIEDAD LITERARIA Y ARTISTICA CON LAS MODIFICACIONES INTRODUCIDAS POR LA LEY DE DERECHO DE AUTOR Y DERECHOS CONEXOS No. 17.616 DE 10 DE ENERO DE 2003, LEY 17.805 DE 26 DE AGOSTO DE 2004, LEY 18.046 DE 24 DE OCTUBRE DE 2006 LEY 18.046 DE 24 DE OCTUBRE DE 2006)</p>
<p><strong>ADVERTENCIA</strong> - La consulta de este documento queda condicionada a la aceptación de las siguientes condiciones de uso: Este documento es únicamente para usos privados enmarcados en actividades de investigación y docencia. No se autoriza su reproducción con fines de lucro. Esta reserva de derechos afecta tanto los datos del documento como a sus contenidos. En la utilización o cita de partes debe indicarse el nombre de la persona autora.</p>
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PDF
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Artículo
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DOI 10.1007/s10853-009-4038-y
Ätomos
Cinética de reacción
Microcospía electrónica
nanotubos de carbono