Regensburg 2004 – scientific programme

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CPP: Chemische Physik und Polymerphysik

CPP 12: Colloids and Nanoparticles II

CPP 12.4: Talk

Monday, March 8, 2004, 16:30–16:45, H 39

Surface modification of carbon nanotubes: by deposition of nanosized — •Miguel Correa-Duarte and Michael Giersig — Caesar Research Center, Dept. Nanotechnology, Ludwig-Erhard Allee 2, 53175 Bonn

In this presentation we will discuss the covering of multi-walled carbon nanotubes (MWCNTs) with nanosized metallic and semiconductor nanoparticles. In the first step MWCNTs have been positively or negatively charged (depending on the nanoparticles charge) by covering with cationic poly(diallyldimethylammonium) chloride (PDDA) or anionic poly(sodium 4-styrenesulfonate) (PSS) polyelectrolyte. The following step was the deposition of nanosized metallic (Au, SiO2@Au) and semiconductor (CdSe, CdTe) particles. The successive covering process was optically registered and was correlated with the structural characterization by high resolution transmission and scanning electron microscopy.