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Pàgina inicial > Articles > Articles publicats > Sponge-like molecular cage for purification of fullerenes |
Data: | 2014 |
Resum: | Since fullerenes are available in macroscopic quantities from fullerene soot, large efforts have been geared toward designing efficient strategies to obtain highly pure fullerenes, which can be subsequently applied in multiple research fields. Here we present a supramolecular nanocage synthesized by metal-directed self-assembly, which encapsulates fullerenes of different sizes. Direct experimental evidence is provided for the 1:1 encapsulation of C 60, C 70, C 76, C 78 and C 84, and solid state structures for the host-guest adducts with C 60 and C 70 have been obtained using X-ray synchrotron radiation. Furthermore, we design a washing-based strategy to exclusively extract pure C 60 from a solid sample of cage charged with a mixture of fullerenes. These results showcase an attractive methodology to selectively extract C 60 from fullerene mixtures, providing a platform to design tuned cages for selective extraction of higher fullerenes. The solid-phase fullerene encapsulation and liberation represent a twist in host-guest chemistry for molecular nanocage structures. |
Ajuts: | European Commission 630978 European Commission 277801 European Commission 239910 Ministerio de Educación, Cultura y Deporte AP2010-2517 Ministerio de Ciencia e Innovación CTQ2012-37420-C02-01/BQU Ministerio de Ciencia e Innovación CTQ2012-32436 Ministerio de Ciencia e Innovación CTQ2011-23156/BQU Ministerio de Ciencia e Innovación CTQ2011-25086/BQU Ministerio de Ciencia e Innovación CSD2010-00065 Ministerio de Ciencia e Innovación INP-2011-0059-PCT-420000-ACT1 Ministerio de Ciencia e Innovación MAT2012-30994 Ministerio de Ciencia e Innovación JCI-2012-14438 Agència de Gestió d'Ajuts Universitaris i de Recerca 2009/SGR-637 |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió acceptada per publicar |
Matèria: | Carbon nanotubes and fullerenes ; Design, synthesis and processing ; Self-assembly |
Publicat a: | Nature communications, Vol. 5 (Nov. 2014) , art. 5557, ISSN 2041-1723 |
Postprint 24 p, 891.6 KB |