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Título del libro: Green Processes For Nanotechnology: From Inorganic To Bioinspired Nanomaterials
Título del capítulo: Solvent-free functionalization of carbon nanomaterials

Autores UNAM:
ELENA GOLOVATAYA DZHYMBEEVA; VLADIMIR BASSIOUK EVDOKIMENKO;

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Autores externos:

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Idioma:
Inglés

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Año de publicación:
2015

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Palabras clave:

Addition reactions; Auxiliary equipment; Carbon nanotubes; Chemical compounds; Chemical modification; Fullerenes; Graphene; Nanodiamonds; Nanostructured materials; Nanotubes; Purification; Yarn; Carbon nano-materials; Covalent functionalizations; Covalent modifications; Functionalizations; Functionalized materials; Mechanochemical treatment; Nucleophilic additions; Solvent free; Solvents

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Resumen:

Meeting the growing needs for more ecologically friendly, ?green? processes for the functionalization of carbon nanomaterials (CNMs), a variety of chemical reactions proceeding under solvent?free conditions were proposed. Significant advances were achieved in the solvent?free covalent functionalization of carbon nanotubes (CNTs): a number of reactions were proposed to introduce organic moieties into the nanotube ends and sidewalls, which can be initiated by temperature, plasma, or mechanochemical treatment. In a number of instances, however, the concept ?solvent-free? is applied to the reaction conditions only, whereas the entire synthetic protocol still requires auxiliary purification steps, which consume organic solvents along with an additional time, labor, and equipment. Our group systematically worked on the development of totally solvent?free functionalization techniques, with an emphasis on the covalent modification of CNTs, and attempting to further apply the same solvent-free protocols to other CNMs, nanodiamond in particular. The functionalization protocols designed by us are based on thermally activated reactions of amidation and nucleophilic addition with chemical compounds (mainly amines and thiols), which are stable and volatile at 150?200 °C under reduced pressure. Among main advantages of this approach is that not only the reactions per se take place at a high rate but also excess reagents are spontaneously removed from the functionalized material, thus making its additional purification unnecessary. As regards other CNMs, while the research effort undertaken for the chemical modification of ND, graphene, and graphene oxide as a whole is significant, the possibility of using solvent?free techniques for this purpose remains strongly underexplored. © Springer International Publishing Switzerland 2015.

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Entidades citadas de la UNAM:

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Fuente:


ISBN:
9783319154619
Editorial:
Springer International Publishing Nombre de la publicación:
Solvent-free functionalization of carbon nanomaterials
Página inicial:
163
Página final:
205

Tipo de producto:
Capítulo de un Libro

DOI:
10.1007/978-3-319-15461-9_6