Molecular design and monolayer stability of oligo(phenylenevinylene derivatives

Atsushi Watakabe, Toyoki Kunitake

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In order to obtain monolayers of wholly π-conjugated derivatives with improved stability and homogeneity, oligo(phenylenevinylene derivatives with different numbers of phenylenevinylene units, different hydrophilic groups and different substituents at the end of the hydrophobic π-conjugated chain were synthesized and their surface pressure-area isotherms and fluorescence microscopy images were examined. The presence of two phenylenevinylene units was suitable for monolayer formation. Monolayers with improved stability were obtainable from sulfonamide derivatives with a tert-butyl or an octadecyl group at the hydrophobic ends and from a derivative which had a sulfonamide group between the π-conjugated structure and an alkyl spacer group Fluorescence microscopy revealed that the tert-butyl derivative formed a homogeneous monolayer in the condensed region. The effects of the substituents upon the monolayer properties were discussed.

Original languageEnglish
Pages (from-to)101-116
Number of pages16
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume87
Issue number2
DOIs
Publication statusPublished - Jul 29 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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