Structural phase transition in two-dimensional polar crystallites of organic dye molecules: In-plane X-ray diffraction analysis

Noritaka Kato, Yasuaki Shin, Yoshiaki Uesu

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The two-dimensional polar crystallite of amphiphilic merocyanine dye molecules exhibits a thermochromic phase transition on the aqueous subphase. Grazing incident X-ray diffraction measurements were performed onto Langmuir-Blodgett films consisting of the high and/or low temperature phases of the crystallites. It was clarified that the transition accompanies the structural change of the crystallite.

Original languageEnglish
Pages (from-to)285-290
Number of pages6
Publication statusPublished - 1 Jan 2002


  • Grazing incident X-ray diffraction
  • J-aggregate
  • Langmuir-Blodgett film
  • Merocyanine dye
  • Structural phase transition
  • Thermochromism

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