Monolayer Studies of a New Surfactant Carboxyporphyrin

Michel Ringuet, Jacques Gagnon, Roger M. Leblanc

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The surface chemistry of a new surfactant carboxyporphyrin is described. This molecule forms well-behaved monomolecular layers at the air-water interface. The surface pressure-area isotherms are given for subphases at various pH's and temperatures. Significant pH and temperature effects are obtained. The monolayer films are transferred onto quartz slides by using the Langmuir-Blodgett technique. Spectrophotometric studies of the LB films show an acid-base equilibration to occur within the monolayer leading to mixtures of free base and dicationic porphyrin. Free base/dication ratios in the various LB films are presented.

Original languageEnglish (US)
Pages (from-to)700-704
Number of pages5
JournalLangmuir
Volume2
Issue number6
DOIs
StatePublished - Jan 1 1986
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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