Structures of head-group and tail-group monolayers in a Langmuir-Blodgett film

A. Malik*, M. K. Durbin, A. G. Richter, K. G. Huang, P. Dutta

*Corresponding author for this work

Research output: Contribution to journalArticle

43 Scopus citations

Abstract

We have studied monolayer and multilayer Langmuir-Blodgett films of lead stearate using x-ray diffraction and reflectivity. We show that it is possible to distinguish the scattering due to the head groups from that due to the alkane chains. The second and subsequent alkane monolayers are distorted hexagonal (the first monolayer is known to be hexagonal); successive monolayers are shifted laterally by one-fourth of an in-plane lattice spacing, and the chains tilt by ∼8°towards a nearest neighbor. The lead ion monolayers are also distorted hexagonal; successive monolayers are shifted laterally by a half lattice spacing. From rod scan intensities, we have determined the relative positions of the lead and alkane chain lattices.

Original languageEnglish (US)
Pages (from-to)R11654-R11657
JournalPhysical Review B
Volume52
Issue number16
DOIs
StatePublished - Jan 1 1995

ASJC Scopus subject areas

  • Condensed Matter Physics

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