Interfacial width in polymer bilayer films prepared by double-spin-coating and flotation methods

Yoshihisa Fujii, Hironori Atarashi, Masahiro Hino, Toshihiko Nagamura, Keiji Tanaka

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A spin-coating method with the aid of selective solvents has been used to construct multilayer structures for organic devices under the assumption that the solvents do not invade a preformed structure. To confirm the assumption, we examined the interfacial width (?i) of model polymer bilayers, composed of polystyrene and perdeuterated poly(methyl methacrylate), prepared by spin-coating and flotation methods. Neutron reflectivity measurements revealed that the ?i value was larger for the spin-coating method than for the flotation method. These results cast doubt on the validity of the assumption. This knowledge should be kept in mind when this method is applied to construct multilayer structures.

Original languageEnglish
Pages (from-to)1856-1859
Number of pages4
JournalACS Applied Materials and Interfaces
Volume1
Issue number9
DOIs
Publication statusPublished - Sep 30 2009
Externally publishedYes

    Fingerprint

Keywords

  • bilayer
  • flotation
  • interfacial width
  • neutron reflectivity
  • spin coating

ASJC Scopus subject areas

  • Materials Science(all)

Cite this