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Mechanically Interlocked Single‐Wall Carbon Nanotubes
Author(s) -
de Juan Alberto,
Pouillon Yann,
RuizGonzález Luisa,
TorresPardo Almudena,
Casado Santiago,
Martín Nazario,
Rubio Ángel,
Pérez Emilio M.
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201402258
Subject(s) - rotaxane , carbon nanotube , supramolecular chemistry , materials science , covalent bond , nanotechnology , catenane , metathesis , tetrathiafulvalene , chemistry , polymer , molecule , organic chemistry , polymerization , composite material
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 CC 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.