Low dimensional graphite nanoparticles prepared by laser ablation of PTCDA/Co target with 355 nm beams

Ablation of mixture targets of perylenetetracarboxylic dianhydride (PTCDA) with cobalt powder is carried out using the third harmonic beam of a Nd:YAG laser to obtain thin films consisting of variety size of nanoparticles. FT-IR and Raman spectroscopic studies allow us to conclude that fragments without the anhydride groups of PTCDA and with better defined perylene skeleton are deposited on the substrates. Gradual increase of the electric conductivity with increasing substrate temperature during deposition suggests effective polymerization of the deposition to form polyperinaphthalene, one of low dimensional graphite family.