Issue 24, 2004

The interaction of n-nonyl-β-d-glucopyranoside and sodium dodecyl sulfate with DMPC and DMPG monolayers studied by infrared reflection absorption spectroscopy

Abstract

The interaction of the surfactants n-nonyl-β-D-glucopyranoside and sodium dodecyl sulfate with lipid monolayers of 1,2-dimyristoyl-d54-sn-glycero-3-phosphocholine and 1,2-dimyristoyl-d54-sn-3-[phospho-rac(1-glycerol)] at the air–water interface was studied by infrared reflection absorption spectroscopy. Isotopically labeled lipids were used in order to obtain separate information about the quantity and structural changes of both, the lipid and the surfactant component during the interaction. Knowing the extinction coefficients of the pure components, the number of lipid and surfactant molecules in the mixed monolayer can be calculated directly from the absorbance of the antisymmetric CD2 and CH2 stretching vibrational bands, respectively. This allows the calculation of the partition coefficient for the surfactant incorporated into the lipid monolayer. The influence of electrostatic interactions on the partition coefficient was investigated by use of the negatively charged lipid 1,2-dimyristoyl-d54-sn-3-[phospho-rac(1-glycerol)] and the surfactant sodium dodecyl sulfate. Finally, the effect of a 0.1 M NaCl subphase on the partitioning is described.

Article information

Article type
Paper
Submitted
14 Jul 2004
Accepted
25 Aug 2004
First published
13 Sep 2004

Phys. Chem. Chem. Phys., 2004,6, 5543-5550

The interaction of n-nonyl-β-D-glucopyranoside and sodium dodecyl sulfate with DMPC and DMPG monolayers studied by infrared reflection absorption spectroscopy

A. Meister, A. Kerth and A. Blume, Phys. Chem. Chem. Phys., 2004, 6, 5543 DOI: 10.1039/B410761F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements