Transitions to a new chiral phase in a Langmuir monolayer

M. K. Durbin*, A. Malik, A. G. Richter, R. Ghaskadvi, T. Gog, Pulak Dutta

*Corresponding author for this work

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

Isotherms and x-ray diffraction studies of eicosanoic acid Langmuir monolayers show a phase in which the molecular tilt is intermediate between nearest-neighbor (NN) and next-nearest-neighbor (NNN) directions. The transition from this "I" phase to an NN-tilted structure is first order, with a ~60° change in the tilt direction, while the transition to an NNN-tilted structure is apparently continuous. These results can be explained using a Landau-type theory for uniaxially distorted lattices, which is a modification of an existing theory for hexagonal lattices [J. V. Selinger and D. R. Nelson, Phys. Rev. Lett. 61, 416 (1988)].

Original languageEnglish (US)
Pages (from-to)8216-8220
Number of pages5
JournalJournal of Chemical Physics
Volume106
Issue number19
DOIs
StatePublished - May 15 1997

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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