Peapod synthesis depending on the number of nanotube sidewalls

In this paper we demonstrate filling of carbon nanotubes (CNTs) grown by chemical vapor deposition (CVD) directly on Si3N4 TEM grids. The CNTs are synthesized at different growth temperatures T-CVD providing different numbers of sidewalls and diameters. We characterize each step of the peapod synthesis and focus on the opening of as-grown CNTs, which is necessary for filling them with guest molecules like C-60. Thus, the creation of defects during peapod synthesis and the resulting peapods are studied using high resolution TEM and Raman spectroscopy. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinhei