Stereoselectivity in spontaneous assembly of rolled incommensurate carbon bilayers

Taisuke Matsuno (), Yutaro Ohtomo, Maki Someya and Hiroyuki Isobe ()
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Taisuke Matsuno: The University of Tokyo
Yutaro Ohtomo: The University of Tokyo
Maki Someya: The University of Tokyo
Hiroyuki Isobe: The University of Tokyo

Nature Communications, 2021, vol. 12, issue 1, 1-8

Abstract: Abstract The periodicity of two-dimensional entities can be manipulated by their stacking assembly, and incommensurate stacks of bilayers are attracting considerable interest in materials science. Stereoisomerism in incommensurate bilayers was first noted with incommensurate double-wall carbon nanotubes composed of helical carbon networks, but the lack of structural information hampered the chemical understanding such as the stereoselectivity during bilayer formation. In this study, we construct a finite molecular version of incommensurate carbon bilayers by assembling two helical cylindrical molecules in solution. An outer cylindrical molecule is designed to encapsulate a small-bore helical cylindrical molecule, and the spontaneous assembly of coaxial complexes proceeds in a stereoselective manner in solution with a preference for heterohelical combinations over diastereomeric, homohelical combinations. The rational design of incommensurate bilayers for material applications may be facilitated by the design and development of molecular versions with discrete structures with atomic precision.

Date: 2021
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DOI: 10.1038/s41467-021-21889-8

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