Aggregation numbers of cationic oligomeric surfactants: a time-resolved fluorescence quenching study

Langmuir : the ACS Journal of Surfaces and Colloids
Laurent WattebledJean-Louis Habib-Jiwan

Abstract

The micelle aggregation numbers (N(agg)) of several series of cationic oligomeric surfactants were determined by time-resolved fluorescence quenching (TRFQ) experiments, using advantageously 9,10-dimethylanthracene as fluorophore. The study comprises six dimeric ("gemini"), three trimeric, and two tetrameric surfactants, which are quaternary ammonium chlorides, with medium length spacer groups (C(3)-C(6)) separating the individual surfactant fragments. Two standard cationic surfactants served as references. The number of hydrophobic chains making up a micellar core is relatively low for the oligomeric surfactants, the spacer length playing an important role. For the dimers, the number decreases from 32 to 21 with increasing spacer length. These numbers decrease further with increasing degree of oligomerization down to values of about 15. As for many conventional ionic surfactants, the micelles of all oligomers studied grow only slightly with the concentration, and they remain in the regime of small micelles up to concentrations of at least 3 wt %.

References

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Citations

Oct 19, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Avinash Bhadani, Sukhprit Singh
Jul 30, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Yaxun FanYilin Wang
Oct 21, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·D JurašinN Filipović-Vinceković
Jun 30, 2014·Journal of Colloid and Interface Science·Victoria Isabel MartínMaría Luisa Moyá
Jul 9, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Jakub MondekMiloslav Pekař
Oct 1, 2014·Journal of Colloid and Interface Science·Vinay ChauhanGurcharan Kaur
May 31, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Tomokazu YoshimuraHiroki Kurata
Aug 1, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Raman KambojGurcharan Kaur
Sep 10, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Linyi ZhuYilin Wang
Jun 12, 2013·Journal of Colloid and Interface Science·Ali Reza Tehrani-BaghaLars Nordstierna
Apr 24, 2012·Journal of Colloid and Interface Science·Anne TechenMichael U Kumke
Aug 21, 2007·Journal of Colloid and Interface Science·Rodrigo MontecinosBoris E Weiss-López
Apr 5, 2012·Journal of Colloid and Interface Science·A R Tehrani-BaghaK Holmberg
Jun 22, 2016·Journal of Fluorescence·Sandeep Kumar MauryaDebabrata Goswami
Nov 30, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Huoxin LuanYujun Feng
Sep 25, 2009·The Journal of Physical Chemistry. B·Suman K SamantaPrabal K Maiti
Dec 2, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Yanbo HouYilin Wang
Aug 23, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Laurent Wattebled, André Laschewsky
May 8, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Abdullah O Ba-Salem, Jean Duhamel
Jul 25, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Huiyu HuangXin Su
Dec 15, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Sylvain PrévostMichael Gradzielski
Apr 5, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Yaxun Fan, Yilin Wang
Nov 19, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Abdullah O Ba-Salem, Jean Duhamel

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