2015-05-042015-05-042013-11-26Rai, Pradeep K., Parra-Vasquez, Nicholas A. G., Peng, Haiqing, Hauge, Robert H. and Pasquali, Matteo, "Methods for solubilizing and separating large fullerenes." Patent US8591854B2. issued 2013-11-26. Retrieved from https://hdl.handle.net/1911/80141.https://hdl.handle.net/1911/80141We have discovered that size dependent solubility of large fullerenes in strong acids is dependent on acid strength. This provides a scalable method for separating large fullerenes by size. According to some embodiments, a method for processing a fullerene starting material comprises large fullerenes comprises mixing the starting material with a first concentrated sulfuric acid solution so as to obtain a first dispersion comprising a first portion of the large fullerenes solubilized in the first concentrated sulfuric acid solution.10 ppengUtility patentUS8591854B2