Nanotube synthesis

Shen, M.W. et al. (2009) Polyethyleneimine-mediated functionalization of multiwalled carbon nanotubes synthesis, characterization, and in vitro toxicity assay. Journal of Physical Chemistry C, 113 (8), 3150-3156. 

Fluorescent nanotubes of polyethyleneimine (PEI) and 3,4,9,10-perylenetetra-carboxylicdianhydride (PTCDA) have been prepared through the alternating deposition of polymers and small functional molecules that form covalent bonds (Figure 7.10) [ 120]. The nanotube synthesis starts with the deposition of P EI in the pores of an AAO membrane as the first layer. The PTCDA solutionis then used to bind to the PEI via covalent bonding (Figure 7.10). The electro-optical properties of the small molecule (PTCDA) are retained in the multilayer films of PEI/PTCDA. The prepared nanotubes retain their fluorescent properties for up to 10 months without... 

Dresselhaus, M., Dresselhaus, G., and Avouris, P., Eds., Carbon Nanotubes. Synthesis, Structure, Properties and Applications, Springer, Berlin, 2001. 

Baker SE, Cai W, Lasseter TL, Weidkamp KP, Hamers RJ (2002) Covalently bonded adducts of deoxyribonucleic acid (DNA) oligonucleotides with single-wall carbon nanotubes Synthesis and hybridization. Nano Lett. 2 1413-1417. 

Dresselhaus MS, Dresslhous G, Avouris P (2000). In carbon nanotubes synthesis, structure, properties and application, Chap. 13. Springer, Berlin, Germany. 

Dresseihaus, M. S. Dresseihaus, G. Avouris, P. Carbon nanotubes synthesis, structure, properties, and applications Springer Berlin New York, 2001. 

N. Grobert, R. Kamalakran, P. Kohler-Redlich, M. Ruhle, T. Seeger, H. Terrones, N-dopingand coalescence of carbon nanotubes synthesis and electronic properties, Appl. Phys. A, vol. 74, pp. 355-361, 2002. 

Campidelli, S., et al., Dendrimer-functionalizedsingle-wall carbon nanotubes Synthesis, characterization, and photoinduced electron transfer. Journal of the American Chemical Society, 2006.128(38) p. 12544-12552. 

G. Cheng and T. Guo, Surface segregation in Ni/Co bimetallic nanoparticles produced in single-walled carbon nanotube synthesis, J. Phys. Chem. B 106, 5833-5839 (2002). 

Following are the important conditions necessary for carbon nanotube synthesis... 

Despite the need to know how nanotubes may affect or cause toxicity for live organisms, only a small number of studies have been dedicated to this problem. Furthermore, results of these studies have been inconsistent and not fully understood. The data obtained show that crude nanotubes possess a certain level of toxicity (in both in vivo and in vitro studies) associated mainly with the presence of metals, which are used as catalysts in nanotube synthesis. For purified nanotubes minimal toxic effects were seen even at high concentrations, and chemically functionalized nanotubes used for drug delivery did not show any toxic effects. However, the ability of nanotubes to form aggregates requires further research in this area. 

M. S. Dresselhaus, G. Dresselhaus and P. Avouris (Eds.), Carbon Nanotubes Synthesis, Structure, Properties, and Applications (Springer-Verlag, Berlin, Heidelberg, New York, 2001) J. Appenzeller, E. Joselevich and W. Honlein, Nanoelectronics and Information Technology (Wiley-VCH, Weinheim, 2003), p. 473. 

Terrones M. Carbon nanotubes synthesis and properties, electronic devices and other emerging applications, Inter Mater Rev 2004 49 325-377. 

Our experiment has demonstrated the possibility of the carbon nanotubes synthesis by low temperature (substrate temperature was 500°C) vapor deposition method from the ethanol vapor. Field emission samples were produced with different catalyst distribution on the substrate surface. 

Kozlov G.I. (2003) Forming of carbon cobweb at the single walls nanotube synthesis in the stream of laser ablation products widening in an electric field. Pisma v JTF, 18, 88-94. (In Russian). 

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