Combinatorial design of molecular seeds for chirality-controlled synthesis of single-walled carbon nanotubes

Joerg Tomada, Thomas Dienel, Frank Hampel, Roman Fasel and Konstantin Amsharov ()
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Joerg Tomada: Friedrich-Alexander-University Erlangen-Nuremberg, Department of Chemistry and Pharmacy
Thomas Dienel: Empa, Swiss Federal Laboratories for Materials Science and Technology
Frank Hampel: Friedrich-Alexander-University Erlangen-Nuremberg, Department of Chemistry and Pharmacy
Roman Fasel: Empa, Swiss Federal Laboratories for Materials Science and Technology
Konstantin Amsharov: Friedrich-Alexander-University Erlangen-Nuremberg, Department of Chemistry and Pharmacy

Nature Communications, 2019, vol. 10, issue 1, 1-10

Abstract: Abstract The chirality-controlled synthesis of single-walled carbon nanotubes (SWCNTs) is a major challenge facing current nanomaterials science. The surface-assisted bottom-up fabrication from unimolecular CNT seeds (precursors), which unambiguously predefine the chirality of the tube during the growth, appears to be the most promising approach. This strategy opens a venue towards controlled synthesis of CNTs of virtually any possible chirality by applying properly designed precursor molecules. However, synthetic access to the required precursor molecules remains practically unexplored because of their complex structure. Here, we report a general strategy for the synthesis of molecular seeds for the controlled growth of SWCNTs possessing virtually any desired chirality by combinatorial multi-segmental assembly. The suggested combinatorial approach allows facile assembly of complex CNT precursors (with up to 100 carbon atoms immobilized at strictly predefined positions) just in one single step from complementary segments. The feasibility of the approach is demonstrated on the synthesis of the precursor molecules for 21 different SWCNT chiralities utilizing just three relatively simple building blocks.

Date: 2019
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DOI: 10.1038/s41467-019-11192-y

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