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Title

Mechanically interlocked single-wall sarbon nanotubes

AuthorsJuan, Alberto de; Pouillon, Yann ; Martín, Nazario; Rubio, Angel; Pérez, Emilio M.
KeywordsSupramolecular chemistry
Nanotubes
π interactions
Rotaxanes
Ring-closing metathesis
Issue Date2014
PublisherWiley-VCH
CitationAngewandte Chemie International Edition 53(21): 5394-5400 (2014)
AbstractExtensive research has been devoted to the chemical manipulation of carbon nanotubes. The attachment of molecular fragments through covalent-bond formation produces kinetically stable products, but implies the saturation of some of the C[BOND]C double bonds of the nanotubes. Supramolecular modification maintains the structure of the SWNTs but yields labile species. Herein, we present a strategy for the synthesis of mechanically interlocked derivatives of SWNTs (MINTs). In the key rotaxane-forming step, we employed macrocycle precursors equipped with two π-extended tetrathiafulvalene SWNT recognition units and terminated with bisalkenes that were closed around the nanotubes through ring-closing metathesis (RCM). The mechanically interlocked nature of the derivatives was probed by analytical, spectroscopic, and microscopic techniques, as well as by appropriate control experiments. Individual macrocycles were observed by HR STEM to circumscribe the nanotubes.
URIhttp://hdl.handle.net/10261/137027
DOI10.1002/anie.201402258
Identifiersdoi: 10.1002/anie.201402258
e-issn: 1521-3773
issn: 1433-7851
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