Chain polymerization of diacetylene compound multilayer films on the topmost surface initiated by a scanning tunneling microscope tip

Daisuke Takajo, Yuji Okawa, Tsuyoshi Hasegawa, Masakazu Aono

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Chain polymerizations of diacetylene compound multilayer films on graphite substrates were examined with a scanning tunneling microscope (STM) at the liquid/solid interface of the phenyloctane solution. The first layer grew very quickly into many small domains. This was followed by the slow formation of the piled up layers into much larger domains. Chain polymerization on the topmost surface layer could be initiated by applying a pulsed voltage between the STM tip and the substrate, usually producing a long polymer of submicrometer length. In contrast, polymerizations on the underlying layer were never observed, This can be explained by a conformation model in which the polymer backbone is lifted up.

Original languageEnglish
Pages (from-to)5247-5250
Number of pages4
JournalLangmuir
Volume23
Issue number10
DOIs
Publication statusPublished - 2007 May 8
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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