Grazing incidence X-ray diffraction study of dimyristoylphosphatidic acid monolayers on aqueous subphases in the presence of calcium or magnesium ions

Hiroshi Takahashi, Yasuyuki Murase, Kazue Kurihara, Ichiro Hatta, Etsuo Arakawa, Kunikazu Takeshita, Tadashi Matsushita

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Focusing on the difference in the isotherms of dimyristoylphosphatidic acid (DMPA) monolayers on aqueous subphases in the presence of calcium and magnesium ions, the structures of the DMPA monolayer on the aqueous subphases were investigated by grazing incidence X-ray diffraction. We observed the reflections from the lattice of hydrocarbon chain packing of DMPA monolayers. It was found that the lattice spacings observed by X-ray diffraction in the presence of calcium ions are shorter than those in the presence of magnesium ions at every surface pressure measured. We discussed this result in terms of the hydration of these ions.

Original languageEnglish
Pages (from-to)L1092-L1095
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume35
Issue number8 SUPPL. B
Publication statusPublished - 1996 Aug 15
Externally publishedYes

Keywords

  • Calcium ion
  • Dimyristoylphosphatidic acid
  • Grazing incidence X-ray diffraction
  • Hydrated ion
  • Langmuir monolayer
  • Magnesium ion

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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