Analysis of the Surface Structure of a Built-Up Film of Fluorocarbon Amphiphile and Polymer/ (Fluorocarbon Amphiphile) Composite Thin Film by Means of X-ray Photoelectron Spectroscopy

Atsushi Takahara, Naoaki Morotomi, Shoji Hiraoka, Nobuyuki Higashi, Toyoki Kunitake, Tisato Kaiivama

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Angular dependent X-ray photoelectron spectra were obtained for the Langmuir-Blodgett (LB or built-up) film of a fluorocarbon amphiphile with two fluoroalkyl chains and a poly(vinyl alcohol)/(fluorocarbon amphiphile) composite thin film. A simple layer model was proposed to estimate the photoelectron mean free path in fluorocarbon bilayers. A comparison of the angular dependences of the observed XPS intensity with the calculated intensity for built-up film revealed that the photoelectron mean free path for Claphotoelectron (kinetic energy of ca. 970 eV) in built-up film is ca. 4.0 nm. Fluorocarbon amphiphilic molecules in the composite thin film form highly oriented bilayer lamella. The surface enrichment of fluorocarbon amphiphile in the surface of the composite thin film facing the air was confirmed by X-ray photoelectron spectroscopy. Application of layer models to the calculation of the composition profile of the composite thin film revealed that the surface of the composite thin film which contains more than 19 wt % amphiphile was completely covered with an oriented bilayer of the amphiphile.

Original languageEnglish
Pages (from-to)617-622
Number of pages6
JournalMacromolecules
Volume22
Issue number2
DOIs
Publication statusPublished - Mar 1 1989

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Fluorocarbon Polymers
Fluorocarbons
Amphiphiles
Composite films
Surface structure
X ray photoelectron spectroscopy
Thin films
Photoelectrons
Polymers
Kinetic energy
Alcohols
X rays
Molecules
Air
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Analysis of the Surface Structure of a Built-Up Film of Fluorocarbon Amphiphile and Polymer/ (Fluorocarbon Amphiphile) Composite Thin Film by Means of X-ray Photoelectron Spectroscopy. / Takahara, Atsushi; Morotomi, Naoaki; Hiraoka, Shoji; Higashi, Nobuyuki; Kunitake, Toyoki; Kaiivama, Tisato.

In: Macromolecules, Vol. 22, No. 2, 01.03.1989, p. 617-622.

Research output: Contribution to journalArticle

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