Selective Binding and Easy Separation of C₇₀ by Nanoscale Self‐Assembled Capsules

Abstract

All wrapped up: An easy, highly selective separation of C70 and the higher fullerenes has been achieved by solid–liquid extraction with a 2-ureido-4-[1H]-pyrimidinone-based scaffold which wraps around the guest as a dimeric capsule (see picture), thereby solubilizing it in THF. Acidification disrupts the hydrogen-bonding network and allows easy recovery of the guest and recycling of the receptor without chromatography or tedious procedures. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z603223_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.