Illusory molecular expression of "penrose stairs" by an aromatic hydrocarbon

Waka Nakanishi, Taisuke Matsuno, Junji Ichikawa, Hiroyuki Isobe

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)


Ascending and Descending: A combination of two helical molecules and two twisting covalent axes in the form of a macrocycle conjures an illusory molecular object that has a seemingly impossible molecular structure, that is, an endlessly descending circle that consists of an sp2-carbon network, which can be regarded as the molecular expression of Penrose stairs (see picture).

Original languageEnglish
Pages (from-to)6048-6051
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number27
Publication statusPublished - 2011 Jun 27


  • Penrose stairs
  • arenes
  • helical structures
  • line drawings
  • self-assembly

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)


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