Cargando…

Ambient solid-state mechano-chemical reactions between functionalized carbon nanotubes

Carbon nanotubes can be chemically modified by attaching various functionalities to their surfaces, although harsh chemical treatments can lead to their break-up into graphene nanostructures. On the other hand, direct coupling between functionalities bound on individual nanotubes could lead to, as y...

Descripción completa

Detalles Bibliográficos
Autores principales: Kabbani, Mohamad A., Tiwary, Chandra Sekhar, Autreto, Pedro A.S., Brunetto, Gustavo, Som, Anirban, Krishnadas, K.R., Ozden, Sehmus, Hackenberg, Ken P., Gong, Yongi, Galvao, Douglas S., Vajtai, Robert, Kabbani, Ahmad T., Pradeep, Thalappil, Ajayan, Pulickel M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4490571/
https://www.ncbi.nlm.nih.gov/pubmed/26073564
http://dx.doi.org/10.1038/ncomms8291
Descripción
Sumario:Carbon nanotubes can be chemically modified by attaching various functionalities to their surfaces, although harsh chemical treatments can lead to their break-up into graphene nanostructures. On the other hand, direct coupling between functionalities bound on individual nanotubes could lead to, as yet unexplored, spontaneous chemical reactions. Here we report an ambient mechano-chemical reaction between two varieties of nanotubes, carrying predominantly carboxyl and hydroxyl functionalities, respectively, facilitated by simple mechanical grinding of the reactants. The purely solid-state reaction between the chemically differentiated nanotube species produces condensation products and unzipping of nanotubes due to local energy release, as confirmed by spectroscopic measurements, thermal analysis and molecular dynamic simulations.