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Sponge-like molecular cage for purification of fullerenes

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 ​C60, ​C70, C76, C78 and C84, and solid state structures for the host–guest adducts with ​C60 and ​C70 have been obtained using X-ray synchrotron radiation. Furthermore, we design a washing-based strategy to exclusively extract pure ​C60 from a solid sample of cage charged with a mixture of fullerenes. These results showcase an attractive methodology to selectively extract ​C60 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

This work was supported by grants from the European Research Council (Starting Grant Projects ERC-2011-StG-277801 and ERC-2009-StG-239910), the Spanish MICINN (CTQ2012-37420-C02-01/BQU, CTQ2012-32436, CTQ2011-23156/BQU, CTQ2011-25086/BQU, Consolider-Ingenio CSD2010-00065, INNPLANTA project INP-2011-0059-PCT-420000-ACT1, MAT2012-30994, a RyC contract to I.I., a JdC contract JCI-2012-14438 and CIG (FP7-PEOPLE-2013-CIG-630978) to S.O. and a PhD grant AP2010-2517 to M.G.B.) and the Generalitat de Catalunya (2009SGR637 and a PhD grant to C.G.S.)

© Nature Communications, 2014, vol. 5, núm. art. 5557

Macmillan

Author: García Simón, Cristina
Garcia Borràs, Marc
Gómez Martín, Laura
Parella Coll, Teodor
Osuna Oliveras, Sílvia
Juanhuix, Jordi
Imaz, Inhar
Maspoch, Daniel
Costas Salgueiro, Miquel
Ribas Salamaña, Xavi
Date: 2014
Abstract: 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 ​C60, ​C70, C76, C78 and C84, and solid state structures for the host–guest adducts with ​C60 and ​C70 have been obtained using X-ray synchrotron radiation. Furthermore, we design a washing-based strategy to exclusively extract pure ​C60 from a solid sample of cage charged with a mixture of fullerenes. These results showcase an attractive methodology to selectively extract ​C60 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
This work was supported by grants from the European Research Council (Starting Grant Projects ERC-2011-StG-277801 and ERC-2009-StG-239910), the Spanish MICINN (CTQ2012-37420-C02-01/BQU, CTQ2012-32436, CTQ2011-23156/BQU, CTQ2011-25086/BQU, Consolider-Ingenio CSD2010-00065, INNPLANTA project INP-2011-0059-PCT-420000-ACT1, MAT2012-30994, a RyC contract to I.I., a JdC contract JCI-2012-14438 and CIG (FP7-PEOPLE-2013-CIG-630978) to S.O. and a PhD grant AP2010-2517 to M.G.B.) and the Generalitat de Catalunya (2009SGR637 and a PhD grant to C.G.S.)
Format: application/pdf
ISSN: 2041-1723
Document access: http://hdl.handle.net/10256/12257
Language: eng
Publisher: Macmillan
Collection: MICINN/PN 2011/INP-2011-0059-PCT-420000
MICINN/PN 2012-2014/CTQ2011-23156
MICINN/PN 2012-2014/CTQ2011-25086
MINECO/PN 2013-2015/CTQ2012-37420-C02-01
MICINN/PN 2010-2016/CSD2010-00065
AGAUR/2009-2014/2009 SGR-637
Reproducció digital del document publicat a: http://dx.doi.org/10.1038/ncomms6557
Articles publicats (D-Q)
info:eu-repo/grantAgreement/EC/FP7/239910
info:eu-repo/grantAgreement/EC/FP7/277801
info:eu-repo/grantAgreement/EC/FP7/630978
Is part of: © Nature Communications, 2014, vol. 5, núm. art. 5557
Rights: Tots els drets reservats
Subject: Ful·lerens
Fullerenes
Nanotecnologia
Nanotechnology
Title: Sponge-like molecular cage for purification of fullerenes
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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