Molecular configuration of isotactic PMMA Langmuir-Blodgett films observed by scanning tunnelling microscopy

Jang Joo Kim, Sang Don Jung, Hee Sook Roh, Jeong Sook Ha

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The molecular configuration of isotactic PMMA Langmuir-Blodgett (LB) films was investigated with scanning tunnelling microscopy (STM). STM images of the isotactic PMMA LB films, transferred at the surface pressure of 15 mN m-1, show a closely packed well-ordered arrangement in which two phases with helical and linear chain configurations are mixed. The appearance of the STM images and the width and pitch of the helix indicate that the transition at the surface pressure of 8 mN m-1 corresponds to formation of the right-handed 51 single-strand helix. The transformation process can be explained by a one-dimensional growth.

Original languageEnglish
Pages (from-to)700-704
Number of pages5
JournalThin Solid Films
Volume244
Issue number1-2
DOIs
Publication statusPublished - 1994 May 15

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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