Detail publikačního výsledku

Fluorescence study of aggregation behaviour of cationic surfactant carbethopendecinium bromide and its comparison with cetyltrimethylammonium bromide

HOLÍNKOVÁ, P.; PEKAŘ, M.

Original Title

Fluorescence study of aggregation behaviour of cationic surfactant carbethopendecinium bromide and its comparison with cetyltrimethylammonium bromide

English Title

Fluorescence study of aggregation behaviour of cationic surfactant carbethopendecinium bromide and its comparison with cetyltrimethylammonium bromide

Type

WoS Article

Original Abstract

The aggregation behaviour of the cationic surfactant carbethopendecinium bromide (Septonex) and cetyltrimethylammonium bromide (CTAB) in aqueous solution was investigated by steady-state and time-resolved fluorescence experiments. Values of critical micelle concentration were obtained from the pyrene emission polarity index. The micellar aggregation numbers for four different concentrations of both surfactants were determined by steady-state and time-resolved fluorescence quenching methods, using pyrene as a probe and cetylpyridinium chloride as a quencher. The obtained results for Septonex were compared with the aggregation parameters of CTAB. Generally, Septonex micelles were formed by a smaller number of surfactant monomers than in the case of CTAB and the critical micelle concentration of Septonex is lower than that of CTAB. Also, the concentration dependence of the micelle aggregation number was found.

English abstract

The aggregation behaviour of the cationic surfactant carbethopendecinium bromide (Septonex) and cetyltrimethylammonium bromide (CTAB) in aqueous solution was investigated by steady-state and time-resolved fluorescence experiments. Values of critical micelle concentration were obtained from the pyrene emission polarity index. The micellar aggregation numbers for four different concentrations of both surfactants were determined by steady-state and time-resolved fluorescence quenching methods, using pyrene as a probe and cetylpyridinium chloride as a quencher. The obtained results for Septonex were compared with the aggregation parameters of CTAB. Generally, Septonex micelles were formed by a smaller number of surfactant monomers than in the case of CTAB and the critical micelle concentration of Septonex is lower than that of CTAB. Also, the concentration dependence of the micelle aggregation number was found.

Keywords

Septonex; CTAB; Critical micelle concentration; Aggregation number; Pyrene emission polarity index

Key words in English

Septonex; CTAB; Critical micelle concentration; Aggregation number; Pyrene emission polarity index

Authors

HOLÍNKOVÁ, P.; PEKAŘ, M.

RIV year

2020

Released

01.08.2019

ISBN

0932-3414

Periodical

TENSIDE SURFACTANTS DETERGENTS

Volume

56

Number

4

State

Federal Republic of Germany

Pages from

300

Pages to

305

Pages count

6

URL

https://www.hanser-elibrary.com/doi/abs/10.3139/113.110633

Full text in the Digital Library

http://hdl.handle.net/

BibTex

@article{BUT159275,
  author="Petra {Holínková} and Miloslav {Pekař}",
  title="Fluorescence study of aggregation behaviour of cationic surfactant carbethopendecinium bromide and its comparison with cetyltrimethylammonium bromide",
  journal="TENSIDE SURFACTANTS DETERGENTS",
  year="2019",
  volume="56",
  number="4",
  pages="300--305",
  doi="10.3139/113.110633",
  issn="0932-3414",
  url="https://www.hanser-elibrary.com/doi/abs/10.3139/113.110633"
}