Polymeric fullerene oxide films produced by decomposition of hexanitro60fullerene

摘要

A new poly(fullerene oxide) thin film material has been fabricatedby thermal activaton and electron bombardment of hexanitro60fulleren(HNf) film depositied on a Au substrate,all under vacuum conditions.The reacton products in the polymerization process are analyzed by XPS,UPS,IR,TGA-MS and LDL-MS tehcniques,It is found that the main effect of thermal and radiation treatments is to induce cleavage of -NO bonds from HNF molecules resulted in the release of nitric oxide gas and the formation of fullerene-boud oxyradicals,C_60-O_6.Spectroscopic evidence strongly suggests that rearrrangement of fullerenic nitro moieties into nitrito groups is involved in the HNF decomposition process prior to the generation of reactive oxyradical intermediates.Consequently,theintermolecular coupling reaction of these oxyradicals leads to the generation of reactive oxyradical intermediates.Consequently,the intermolecular coupling coupling reaction of these oxyradicals leads to carbon polymer networks containing oxygen-bridged fullerenes.the thermally generated polymeric thin film is stable up to 900 K.Electron bombardment is also effective in both the decomposition for the polymer formation.