Reliable Aggregation Numbers Are Obtained for Polyelectrolyte Bound Cationic Micelles Using Fluorescence Quenching with a Cationic Surfactant Quencher

2000 ◽  
Vol 104 (5) ◽  
pp. 1137-1140 ◽  
Author(s):  
Per Hansson ◽  
Mats Almgren
Keyword(s):  
Fluorescence Quenching ◽  
Cationic Surfactant ◽  
Cationic Micelles ◽  
Aggregation Numbers

Aggregation Numbers of Cationic Oligomeric Surfactants:  A Time-Resolved Fluorescence Quenching Study

Langmuir ◽  
2006 ◽  
Vol 22 (6) ◽  
pp. 2551-2557 ◽  
Author(s):  
Laurent Wattebled ◽  
André Laschewsky ◽  
Alain Moussa ◽  
Jean-Louis Habib-Jiwan
Keyword(s):  
Fluorescence Quenching ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Aggregation Numbers

scholarly journals The role of polymer flexibility on the interaction with surfactant micelles: poly(vinyl alcohol) and sodium dodecyl sulphate aqueous micelle interactions studied by dynamic fluorescence quenching

1995 ◽  
Vol 73 (11) ◽  
pp. 1765-1772 ◽  
Author(s):  
Jan. Van Stam ◽  
Nadine. Wittouck ◽  
Frans C. De Schryver ◽  
Mats Almgren ◽  
Maria da Graça Miguel
Keyword(s):  
Fluorescence Quenching ◽  
Sodium Dodecyl Sulphate ◽  
Vinyl Alcohol ◽  
Surfactant Concentration ◽  
Sodium Dodecyl ◽  
Critical Aggregation Concentration ◽  
Poly Vinyl Alcohol ◽  
Fluorescence Measurements ◽  
Aggregation Numbers ◽  
Dynamic Fluorescence

The interactions between poly(vinyl alcohol) and the surfactant sodium dodecyl sulphate in aqueous solutions have been investigated by means of static and dynamic fluorescence measurements. By static fluorescence measurements the onset of interaction, the critical aggregation concentration, is determined to be 6.5 mM at 20 °C and 7.0 mM at 40 °C. By dynamic fluorescence measurements without added quencher the influence on the lifetime of the fluorescent probe, pyrene, by the presence of the polymer is investigated. From measurements with an added quencher, dimethylbenzophenone, the surfactant aggregation numbers of the micellar aggregates formed upon interaction between the surfactant and the polymer and the quenching rate constant are obtained. At the two polymer concentrations, i.e., 0.2% and 2.0%, the surfactant aggregation numbers at low surfactant concentration are very small, but increase rapidly with increasing surfactant concentration. Comparisons are made with results from a system where poly(ethylene oxide) instead of poly(vinyl alcohol) is the polymer. Key words: dynamic fluorescence quenching, polymer–surfactant interactions, aggregation numbers.

scholarly journals Pyrene–viologen complexes in SDS micelles: quenching parameters and use as probes of aggregation numbers

2020 ◽  
Vol 19 (1) ◽  
pp. 71-79 ◽  
Author(s):  
Tim Kohlmann ◽  
Martin Goez
Keyword(s):  
Fluorescence Quenching ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Sds Micelles ◽  
Aggregation Numbers ◽  
Insight Into

The cell and its inmates: time-resolved fluorescence quenching analyzed such as to give meaningful insight into key properties of micelles and intramicellar complexes.

Micellar properties of sodium alkyl sulfoacetates and sodium dialkyl sulfosuccinates in water

1984 ◽  
Vol 62 (2) ◽  
pp. 280-284 ◽  
Author(s):  
David J. Jobe ◽  
Vincent C. Reinsborough
Keyword(s):  
Fluorescence Quenching ◽  
Size Determination ◽  
Micellar Solutions ◽  
Volume Changes ◽  
Micellar Properties ◽  
Aggregation Numbers ◽  
Conductance Technique ◽  
Spherical Micelles ◽  
Surfactant Systems ◽  
Aqueous Micellar Solutions

Viscosity, conductivity, density, and fluorescence quenching studies were conducted in aqueous micellar solutions at 25.0 °C of sodium alkyl sulfoacetates and sodium dialkyl sulfosuccinates in a comparison of one-tailed and two-tailed surfactant systems. The hexyl, octyl, and decyl members of the former group and the dihexyl and dioctyl members of the latter group were investigated. The results indicated that the sulfoacetates most likely form spherical micelles with aggregation numbers 20 for hexyl, 42 for octyl, and 70 for decyl with three methods for size determination giving concordant results. For the sulfosuccinates, the aggregation numbers from fluorescence quenching were 38 for the dihexyl and 56 for the dioctyl in agreement with the results from the conductance technique which means that spherical micelles are likely formed also. Volume changes on micellization were obtained for the sulfoacetates.

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