An investigation of the effect of the structure of alkylbenzenesulfonates on the fluorescence properties of micellar aggregates

M. Aoudia, M. A J Rodgers, W. H. Wade

Research output: Contribution to journalArticle

16 Citations (Scopus)


We have investigated the effect of surfactant structure on aqueous micellar solutions formed by two monomeric series of sodium alkylbenzensulfonates (xφC12 and xφC16, where x = 3, 4, 5 ⋯ and indicates the position of the benzene ring [φ] along the alkyl chain) by fluorescence polarization and excimer emission spectroscopy. Our attention was focused on clear aqueous dispersions. Microviscosity around the benzene ring was shown to depend strongly on the isomer composition and is mainly determined by the short alkyl chain (SAC) of the double-tailed surfactants. The size of the aggregate seems largely to be determined by the long alkyl chain (LAC). Excimer emission and fluorescence polarization showed that the benzene ring, in all cases, resists both translational and rotational diffusion in a similar manner.

Original languageEnglish
Pages (from-to)472-478
Number of pages7
JournalJournal of Colloid and Interface Science
Issue number2
Publication statusPublished - 1984


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

Cite this