Elemental analysis within the electrical double layer using total reflection X-ray fluorescence technique

Article Abstract:

Simplified total reflection X-ray fluorescence (TRXF) technique is used for the elemental analysis within the electrical double layer (EDL) near charged monolayers at the air-water interface. The analysis of the counterion competition for the participation in the EDL of highly negatively charged behensylsulfate (BS) monolayers has indicated that univalent [Cs.sup.+] is quite competitive with divalent [Ca.sup.2+] and [Ba.sup.2+].

Usage, Water, X-ray spectroscopy

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Interaction of the antimicrobial peptide dicynthaurin with membrane phospholipids at the air-liquid interface

Article Abstract:

The interaction of the antimicrobial peptide dicynthaurin with 1,2-dipalmitoyl-glycerophosphatidyl-glycerol is investigated in monolayers at the air-liquid interface. The adsorption of the peptide to the negatively charged lipid monolayer and the fluidization of the condensed chain lattice have indicated a direct link to the peptides' ability to expand the bacterial membrane.

Peptides, Structure

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Ionization state and structure of L-1,2-Dipalmitoylphosphatidylglycerol monolayers at the liquid/air interface

Article Abstract:

The phase behavior of phosphatidylglycerols phospholipids was extensively investigated. However, there is no definite picture about the dependence of the ionization state and monolayer structure on subphase composition but the experimental titration curves are in good agreement with theoretical curves based on the Gouy-Chapman model.

Analysis, Ionization

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