Chiral intertwined spirals and magnetic transition dipole moments dictated by cylinder helicity

Sota Sato, Asami Yoshii, Satsuki Takahashi, Seiichi Furumi, Masayuki Takeuchi, Hiroyuki Isobe

Research output: Contribution to journalArticlepeer-review

135 Citations (Scopus)


The presence of anomalous chirality in a roll of graphitic carbon sheets has been recognized since the discovery of carbon nanotubes, which are becoming available in higher quantities through the isolation of chiral single-wall congeners with high purity. Exploration of the properties arising from cylinder chirality is expected to expand the scope of tubular entities in the future. By studying molecular fragments of helical carbon nanotubes, we herein reveal interesting properties that arise from this chirality. The chirality of nanoscale cylinders resulted in chirality of larger dimensions in the form of a double-helix assembly. Cylinder chirality in solution gave rise to a large dissymmetry factor of metal-free entities in circular polarized luminescence. Theoretical investigations revealed the pivotal role of cylindrical shapes in enhancing magnetic dipole transition moments to yield extreme rotatory strength. Unique effects of cylinder chirality in this study may prompt the development of tubular entities, for instance, toward chiroptical applications.

Original languageEnglish
Pages (from-to)13097-13101
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number50
Publication statusPublished - 2017 Dec 12
Externally publishedYes


  • Carbon nanotubes
  • Chirality
  • Circularly polarized
  • Double helix
  • Luminescence
  • Macrocycles

ASJC Scopus subject areas

  • General


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