Detail publikace

Gemini Surfactants with Polymethylene Spacer: Supramolecular Structures at Solid Surface and Aggregation in Aqueous Solution

PISÁRČIK, M. JAMPÍLEK, J. DEVÍNSKY, F. DRÁBIKOVÁ, J. TKACZ, J. OPRAVIL, T.

Originální název

Gemini Surfactants with Polymethylene Spacer: Supramolecular Structures at Solid Surface and Aggregation in Aqueous Solution

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Aggregation of α,ω-bisammonium cationic gemini surfactants with a variable polymethylene spacer and two dodecyl chains has been studied on a solid surface and in aqueous solution. Scanning electron microscopy and dynamic light scattering with the time-resolved fluorescence quenching technique were used for the experiments on the solid surface and in aqueous solution, respectively. As the results from the scanning electron microscopy indicate, the morphology of supramolecular structures of gemini surfactants at the solid surface depends on the spacer length. In aqueous solution, gemini surfactants with spacers consisting of 4, 6, 8, 10, and 12 CH2 groups form spherical micelles with diameters between 2 and 3.5 nm. Micelles of gemini surfactant with a short ethylene spacer show an increase in size up to 13 nm at the maximum concentration investigated. The aggregation number of micelles determined by time resolved fluorescence quenching was found to be in the range 14–25 for the spacer lengths from 6 to 12 CH2 groups with only a moderate increase with surfactant concentration. For micelles of gemini surfactants with the short ethylene spacer, the increase of the aggregation number up to 50 at the maximum concentration was observed. The findings support micellar growth of gemini surfactants with short ethylene spacer.

Klíčová slova

Cationic surfactants, Gemini surfactants, Dynamic light scattering, Time-resolved fluorescence quenching, Scanning electron microscopy

Autoři

PISÁRČIK, M.; JAMPÍLEK, J.; DEVÍNSKY, F.; DRÁBIKOVÁ, J.; TKACZ, J.; OPRAVIL, T.

Vydáno

25. 2. 2016

Nakladatel

Journal of Surfactants and Detergents

ISSN

1097-3958

Periodikum

JOURNAL OF SURFACTANTS AND DETERGENTS

Číslo

1

Stát

Spojené státy americké

Strany od

1

Strany do

10

Strany počet

10

URL

http://link.springer.com/article/10.1007%2Fs11743-016-1797-8

BibTex

@article{BUT122832,
  author="Martin {Pisárčik} and Josef {Jampílek} and Ferdinand {Devínsky} and Juliána {Drábiková} and Jakub {Tkacz} and Tomáš {Opravil}",
  title="Gemini Surfactants with Polymethylene Spacer: Supramolecular Structures at Solid Surface and Aggregation in Aqueous Solution",
  journal="JOURNAL OF SURFACTANTS AND DETERGENTS",
  year="2016",
  number="1",
  pages="1--10",
  doi="10.1007/s11743-016-1797-8",
  issn="1097-3958",
  url="http://link.springer.com/article/10.1007%2Fs11743-016-1797-8"
}