A new nanocomposite formed by single walled carbon nanotubes (SWNTs) and a semiconducting dendrimer with aromatic end groups (PAMAMC) has been prepared and investigated. The good dispersion of SWNTs in PAMAMC matrix has been promoted by sonication in a suitable medium, e.g. N,N-dimethylformamide (DMP). The product obtained has been characterized by SEM and TEM microscopies in order to verify the formation of a nanocomposite system, while UV-Vis and Raman spectroscopies have been considered for investigation on type and level of non-covalent interaction between PAMAMC and SWNT. pinally, in relation to potential photoelectrical properties of the system based on donor (PAMAMC) and acceptor (SWNT) pair, analysis of PAMAMC/SWNT systems exposed to UV light shows that conductivity increases and that a possible transport mechanism is governed by the formation of a charge transfer complex.
Preparation and characterization of a new nanocomposite system based on dendrimer/carbon nanotube pair / L. Ricco, J. Alongi, L. Valentini, I. Armentano, A. Mariani, S. Russo, J.M. Kenny. - In: JOURNAL OF NANOSTRUCTURED POLYMERS AND NANOCOMPOSITES. - ISSN 1790-4439. - 1:1(2005), pp. 5-12.
Preparation and characterization of a new nanocomposite system based on dendrimer/carbon nanotube pair
J. AlongiSecondo
;
2005
Abstract
A new nanocomposite formed by single walled carbon nanotubes (SWNTs) and a semiconducting dendrimer with aromatic end groups (PAMAMC) has been prepared and investigated. The good dispersion of SWNTs in PAMAMC matrix has been promoted by sonication in a suitable medium, e.g. N,N-dimethylformamide (DMP). The product obtained has been characterized by SEM and TEM microscopies in order to verify the formation of a nanocomposite system, while UV-Vis and Raman spectroscopies have been considered for investigation on type and level of non-covalent interaction between PAMAMC and SWNT. pinally, in relation to potential photoelectrical properties of the system based on donor (PAMAMC) and acceptor (SWNT) pair, analysis of PAMAMC/SWNT systems exposed to UV light shows that conductivity increases and that a possible transport mechanism is governed by the formation of a charge transfer complex.File | Dimensione | Formato | |
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