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A Copper-based Supramolecular Nanocapsule that Enables Straightforward Purification of Sc3N-based Endohedral Metallofullerene Soots

A self-assembled Cu II -based nanocapsule enables efficient and straightforward isolation of Sc 3 N@C 80 from arc-processed raw soot. The newly designed Cu II -based supramolecular nanocapsule 5⋅(OTf) 8 was used to effectively entrap fullerenes and endohedral metallofullerenes (EMFs) with different affinities depending on their size and shape. Moreover, we took advantage of the sharply different entrapment abilities of the 5⋅(OTf) 8 cage in the solid state versus in solution to encapsulate all the species with the exception of Sc 3 N@C 80 (both I h and D 5h isomers), which remains pure in solution. HPLC quantification determined that up to 85 % of the total Sc 3 N@C 80 content in the initial mixture was recovered in very high purity ( > 99.5 %). The complete release of the encapsulated species with an orthogonal solvent-washing strategy regenerates 5⋅(OTf) 8 ready to be re-used. This approach opens new opportunities for EMFs purification

We acknowledge financial support from MINECO-Spain for project CTQ2013-43012-P to X.R., CTQ2013-50306-EXP to M.C., and 2014 SGR 862 to M.C. L.E. thanks the US National Science Foundation (NSF) for generous support of this work under the NSF-PREM program (DMR-1205302) and CHE-1408865

Wiley

Manager: Ministerio de Economía y Competitividad (Espanya)
Author: Fuertes Espinosa, Carles
García Simón, Cristina
Castro, Edison
Costas Salgueiro, Miquel
Echegoyen, Luis A.
Ribas Salamaña, Xavi
Abstract: A self-assembled Cu II -based nanocapsule enables efficient and straightforward isolation of Sc 3 N@C 80 from arc-processed raw soot. The newly designed Cu II -based supramolecular nanocapsule 5⋅(OTf) 8 was used to effectively entrap fullerenes and endohedral metallofullerenes (EMFs) with different affinities depending on their size and shape. Moreover, we took advantage of the sharply different entrapment abilities of the 5⋅(OTf) 8 cage in the solid state versus in solution to encapsulate all the species with the exception of Sc 3 N@C 80 (both I h and D 5h isomers), which remains pure in solution. HPLC quantification determined that up to 85 % of the total Sc 3 N@C 80 content in the initial mixture was recovered in very high purity ( > 99.5 %). The complete release of the encapsulated species with an orthogonal solvent-washing strategy regenerates 5⋅(OTf) 8 ready to be re-used. This approach opens new opportunities for EMFs purification
We acknowledge financial support from MINECO-Spain for project CTQ2013-43012-P to X.R., CTQ2013-50306-EXP to M.C., and 2014 SGR 862 to M.C. L.E. thanks the US National Science Foundation (NSF) for generous support of this work under the NSF-PREM program (DMR-1205302) and CHE-1408865
Document access: http://hdl.handle.net/2072/299951
Language: eng
Publisher: Wiley
Rights: Tots els drets reservats
Subject: Coure
Copper
Ful·lerens
Fullerenes
Nitrur d’escandi
Scandium nitride
Nanotubs
Nanotubes
Title: A Copper-based Supramolecular Nanocapsule that Enables Straightforward Purification of Sc3N-based Endohedral Metallofullerene Soots
Type: info:eu-repo/semantics/article
Repository: Recercat

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