Preparation of Langmuir-Blodgett films from fullerene C-60 with grafted polymer chains

Langmuir and Langmuir-Blodgett films were first prepared from fullerene C-6 0 With grafted poly styrene and poly(ethylene oxide). For comparison, Langm uir films were prepared from a pure fullerene C-60 under analogous conditio ns. For C-60 with grafted polystyrene chains, Langmuir films were best appl ied on hydrophobic silicon substrates by the Langmuir-Schaefer method; opti cal microscopic observations showed that the : films are nonuniform in thic kness and are composed of aggregates with dimensions less than or equal to 6 mu m. Langmuir films made of C-60 with grafted poly(ethylene oxide) chain s were transferred well on hydrophobic and hydrophilic silicon substrates b y the Langmuir-Blodgett method; even when the film thickness achieved 10 an d 20 layers, the resulting films were as a rule uniform, as detected by opt ical microscopy.