Mechanically Interlocked Single‐Wall Carbon Nanotubes |
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| Authors: | Alberto de Juan Dr. Yann Pouillon Dr. Luisa Ruiz‐González Dr. Almudena Torres‐Pardo Dr. Santiago Casado Prof. Dr. Nazario Martín Prof. Dr. Ángel Rubio Dr. Emilio M. Pérez |
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| Affiliation: | 1. IMDEA Nanoscience, C/Faraday 9, Ciudad Universitaria de Cantoblanco, 28049 Madrid (Spain);2. European Theoretical Spectroscopy Facility, Centro Joxe Mari Korta, Avenida de Tolosa, 72, 20018 Donostia‐San Sebastian (Spain);3. Departamento de Química Inorgánica, Fac. C.C. Químicas, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid (Spain) |
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| Abstract: | Extensive 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? 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. |
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| Keywords: | nanotubes π interactions ring‐closing metathesis rotaxanes supramolecular chemistry |
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