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Issue 5, 2020
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Archaeal cyclopentane fragment in a surfactant's hydrophobic tail decreases the Krafft point

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Abstract

Archaea are prokaryotic microorganisms famous for their ability to adapt to extreme environments, including low and high temperatures. Archaeal lipids often are macrocycles with two polar heads and a hydrophobic core that contains methyl groups and in-line cycles. Here we present the design of novel general-purpose surfactants that have inherited features of archaeal lipids. These are C12 and C14 carboxylic acids containing in-line cyclopentanes. The cyclopentanes disturb the chain packing, which results in remarkable expansion of the operational range of the surfactant into the low-temperature region. We report synthesis and properties of these novel archaea-like surfactants and details of their chain packing derived from thermodynamics model predictions, molecular dynamics simulations, and experimental data on CMC and Krafft points.

Graphical abstract: Archaeal cyclopentane fragment in a surfactant's hydrophobic tail decreases the Krafft point

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Article information


Submitted
07 Oct 2019
Accepted
19 Dec 2019
First published
19 Dec 2019

Soft Matter, 2020,16, 1333-1341
Article type
Paper

Archaeal cyclopentane fragment in a surfactant's hydrophobic tail decreases the Krafft point

K. S. Mineev, P. E. Volynsky, T. R. Galimzyanov, D. S. Tretiakova, M. Y. Bobrov, A. S. Alekseeva and I. A. Boldyrev, Soft Matter, 2020, 16, 1333
DOI: 10.1039/C9SM02000D

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