Layer-by-Layer Assembly of Multiwall Carbon Nanotubes on Spherical Colloids

Autor:	and Michael Giersig, A. Kosiorek, Miguel A. Correa-Duarte, Luis M. Liz-Marzán, Witold Kandulski
Rok vydání:	2005
Předmět:	Materials science General Chemical Engineering Layer by layer Nanotechnology General Chemistry Carbon nanotube law.invention Colloid chemistry.chemical_compound Template chemistry law Materials Chemistry SPHERES Janus Polystyrene Deposition (law)
Zdroj:	Chemistry of Materials. 17:3268-3272
ISSN:	1520-5002 0897-4756
Popis:	Multiwall carbon nanotubes (CNTs) have been assembled on various types of colloidal templates using the well-known polyelectrolyte-assisted layer-by-layer (LBL) assembly technique. Dense mono- and multilayers of CNTs were successfully deposited on silica, polystyrene, and melamine spherical colloids of different size, showing that relatively short CNTs completely wrap the surface of the spheres, while long nanotubes stick out of the surface, allowing them to contact various spheres at the same time. Decomposition of the colloidal template leads to formation of hollow CNT spheres, which was demonstrated through treatment of melamine@CNT particles with HCl. The deposition was also carried out on ordered arrays of polystyrene particles, leading to nanostructured, conducting CNT assemblies. Rupture of the assemblies with ultrasound shows that the assembly only takes place on one-half of the colloid spheres, so that “Janus” particles with asymmetric functionalities can be easily prepared.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::97702b7ed4eb16b12727bfed7de896b2 https://doi.org/10.1021/cm047710e Zobrazit plný text záznamu