Interfacial properties of substituted fulleropyrrolidines on the water surface

A series of novel substituted fulleropyrrolidines have been synthesized and characterized. A correlation between the substituent structure and the spr eading behavior at the air-water interface has been proposed through the sy stematic study of their Langmuir films. This evidences that only some deriv atives are suitable to from true monolayers at the air-water interface, bec ause of the strong pi-pi intermolecular attractive forces among C-60 sphere s. The factors that influence the nature of the floating layers on the wate r subphase have been identified. At last, tuneable parameters for the prepa ration of real and stable monolayers of fullerene derivatives have been pro posed.