The micellar sphere-to-road transition in CTAC-NaClO3 a fluorescence quenching study

  • M. Almgren
  • J. Alsins
  • J. van Stam
  • E. Mukhtar
Amphiphile Solutions
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 76)


The fluorescence decay of pyrene quenched by benzophenone in cetyltrimethyl ammonium chloride solutions has been studied. On addition of chlorate ions to the solution, a transition to long rod-like micelles are known to occur. The fluorescence decay pattern changes in the transition region, from a typical micellar quenching behaviour, following the equation suggested by Infelta, Thomas and Grätzel [22] via the type of decay suggested for polydisperse micelles (Almgren and Löfroth [18]) to a decay pattern which is independent of the chlorate concentration at high concentrations and follows an equation derived for quenching in infinite rods. The weight average aggregation numbers and the widths of the micelle size distributions were determined in the transition region.

Key words

Aggregation number of micelles fluorescence decay quenching of pyrene by benzophenone cetyltrimethylammoniumchloride solution transition to rod-likd micelles 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Hatschek E (1925) Kolloid Z 37:25CrossRefGoogle Scholar
  2. 2.
    Hatschek E, Jane RS (1926) Kolloid Z 38:33CrossRefGoogle Scholar
  3. 3.
    Israelachvili JN, Mitchell JJ, Ninham BN (1976) J Chem Soc Faraday Trans 2, 72:1525CrossRefGoogle Scholar
  4. 4.
    Ulmius J, Wennerström H, Johansson LB-Å, Lindblom G, Gravsholt S (1979) J Pphys Chem 83:2232CrossRefGoogle Scholar
  5. 5.
    Reiss-Husson F, Luzatti V (1964) J Phys Chem 68:3504CrossRefGoogle Scholar
  6. 6.
    Angelescu E, Popescu DM (1930) Kolloid Z 5:336; Angelescu E, Manolescu T (1941) Kolloid 94:319CrossRefGoogle Scholar
  7. 7.
    Nash T (1958) J Colloid Sci 13:134; (1959) J Colloid Sci 14:59CrossRefGoogle Scholar
  8. 8.
    Porte G (1983) J Phys Chem 87:3541CrossRefGoogle Scholar
  9. 9.
    Mukerjee P (1972) J Phys Chem 79:565CrossRefGoogle Scholar
  10. 10.
    Mazer NA, Carey CA, Benedek GB (1976) J Phys Chem 80:1075; Missel PJ, Mazer NA, Benedek GB, Young CY, Carey MC (1980) J Phys Chem 80:1044CrossRefGoogle Scholar
  11. 11.
    Porte G, Appell J (1981) J Phys Chem 85:2511CrossRefGoogle Scholar
  12. 12.
    Corti M, Degiorgio V (1979) In: Mittal KL (ed) Solution Chemistry of Surfactants. Plenum Press, New York 1:377Google Scholar
  13. 13.
    Löfroth J-E, Almgren M (1984) In: Mittal KL, Lindman B (eds) Surfactants in Solution. Plenum Press, New York 1:736Google Scholar
  14. 14.
    Warr GG, Grieser F (1986) J Chem Soc Faraday Trans 1 82:1813CrossRefGoogle Scholar
  15. 15.
    Warr GG, Grieser F, Evans DF (1986) J Chem Soc Faraday Trans 82:1825Google Scholar
  16. 16.
    Porte G, Poggi Y, Appell J, Maret G (1984) J Phys Chem 88:5713CrossRefGoogle Scholar
  17. 17.
    Eriksson JC, Ljungren S (1985) J Chem Soc, Faraday Trans 2 81:1209CrossRefGoogle Scholar
  18. 18.
    Almgren M, Löfroth J-E (1982) J Chem Phys 76:2734CrossRefGoogle Scholar
  19. 19.
    AlmgrenM, Alsins J, van Stam J, Mukhtar E (1988) J Phys Chem, in the pressGoogle Scholar
  20. 20.
    Löfroth J-E (1985) Eur Biophys J 13:45CrossRefGoogle Scholar
  21. 21.
    Russel JC, Wild UP, Whitten DG (1986) J Phys Chem 90:1319CrossRefGoogle Scholar
  22. 22.
    Infelta PP, Grätzel M, Thomas JK (1974) J Phys Chem 78:190CrossRefGoogle Scholar
  23. 23.
    Almgren M, Grieser F, Thomas JK (1979) J Am Chem Soc 101:279CrossRefGoogle Scholar
  24. 24.
    Johansson LB-Å, Söderman O, Fontell K, Lindblom G (1981) J Phys Chem 85:3694CrossRefGoogle Scholar
  25. 25.
    Almgren M, Alsins J (1987) Progr Colloid Polym Sci 74:55CrossRefGoogle Scholar

Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1988

Authors and Affiliations

  • M. Almgren
    • 1
  • J. Alsins
    • 1
  • J. van Stam
    • 1
  • E. Mukhtar
    • 1
  1. 1.Dept. of Physical ChemistryUniversity of UppsalaUppsalaSweden

Personalised recommendations