The most prominent feature in the interestellar medium extinction curve is the UV bump at 217.5 nm. The carrier of this band has been frequently associated to some form of carbonaceus material but there is no definitive conclusion on the ultimate responsible of the band. The increase in the extinction at higher energies and the existence of many much weaker diffuse interestellar bands in the optical of unknown origin are also some of the intriguing observational properties of the interestellar material. Recently it has been claimed the detection of fullerenes with 60-240 carbon atoms in the Allende meteorite. This is the first direct indication that fulleranes were present in the presolar nebula and strongly support previous suggestions that fullerenes may exist in the interestellar medium. In this talk or poster present the results of my thesis (2003): a theoretical model of the photoabsorption spectra of fullerenes and buckyonions and a study the possible contribution of these molecules to the interestellar extintion. Their spectra are compare the features of these spectra with some of the observational properties of interestellar extintion.