Formation of double helix self-assembled monolayers of ethynylhelicene oligomer disulfides on gold surfaces

Koji Yamamoto, Hiroki Sugiura, Ryo Amemiya, Haruo Aikawa, Zengjian An, Masahiko Yamaguchi, Masashi Mizukami, Kazue Kurihara

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Optically active ethynylhelicene pentamers and hexamers linked by disulfide bonds were synthesized. They formed self-assembled monolayers (SAMs) with double helix structure on gold surfaces, which were analyzed by infrared reflection-absorption spectroscopy (IR-RAS), quartz crystal microbalance (QCM), surface plasmon resonance (SPR), and circular dichroism (CD). Double helix SAMs could be formed on gold surfaces either from double helices or random coils in solution. The double helices on the surface were more stable than in solution. This result suggested the presence of strong intercomplex interactions between double helix complexes on the surface.

Original languageEnglish
Pages (from-to)5972-5978
Number of pages7
JournalTetrahedron
Volume67
Issue number33
DOIs
Publication statusPublished - 2011 Aug 19

Keywords

  • Double helix
  • Ethynylhelicene oligomer
  • Intercomplex interaction
  • Self-assembled monolayer
  • Thermal stability

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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