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Volatile Aroma Surfactants: The Evaluation of the Adsorption-Evaporation Behavior under Dynamic and Equilibrium Conditions.
Langmuir
March 2022
Chair of Colloid Chemistry, Faculty of Chemistry, Moscow State University, 1-3 Leninskie Gory, 119991 Moscow, Russia.
Multicomponent heterogeneous systems containing volatile amphiphiles are relevant to the fields ranging from drug delivery to atmospheric science. Research presented here discloses the individual interfacial activity and adsorption-evaporation behavior of amphiphilic aroma molecules at the liquid-vapor interface. The surface tension of solutions of nonmicellar volatile surfactants linalool and benzyl acetate, fragrances as such, was compared with that of the conventional surfactant sodium dodecyl sulfate (SDS) under equilibrium as well as under no instantaneous equilibrium, including a fast-adsorbing regime.
View Article and Find Full Text PDFBeyond detergent micelles: The advantages and applications of non-micellar and lipid-based membrane mimetics for solution-state NMR.
Prog Nucl Magn Reson Spectrosc
June 2020
Bavarian NMR Center at the Department of Chemistry, Technical University of Munich, Ernst-Otto-Fischer-Str. 2, 85747 Garching, Germany; Institute of Structural Biology, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany. Electronic address:
Membrane proteins are important players in signal transduction and the exchange of metabolites within or between cells. Thus, this protein class is the target of around 60 % of currently marketed drugs, emphasizing their essential biological role. Besides functional assays, structural and dynamical investigations on this protein class are crucial to fully understanding their functionality.
View Article and Find Full Text PDFFast and slow biomembrane solubilizing detergents: Insights into their mechanism of action.
Colloids Surf B Biointerfaces
November 2019
Instituto Biofisika (UPV/EHU, CSIC), Barrio Sarriena s/n, 48940, Leioa, Spain; Departamento de Bioquímica y Biología Molecular, Universidad del País Vasco, Barrio Sarriena s/n, 48940, Leioa, Spain. Electronic address:
Detergents are water-soluble amphiphiles. Above a critical concentration they self-organize in micelles and in the presence of phospholipids mixed micelles are formed. Much information is available on the structure of these self-assemblies and on the thermodynamics of their formation.
View Article and Find Full Text PDFDNA Interaction with Head-to-Tail Associates of Cationic Surfactants Prevents Formation of Compact Particles.
Molecules
June 2018
Experimental Physics, Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam-Golm, Germany.
Cationic azobenzene-containing surfactants are capable of condensing DNA in solution with formation of nanosized particles that can be employed in gene delivery. The ratio of surfactant/DNA concentration and solution ionic strength determines the result of DNA-surfactant interaction: Complexes with a micelle-like surfactant associates on DNA, which induces DNA shrinkage, DNA precipitation or DNA condensation with the emergence of nanosized particles. UV and fluorescence spectroscopy, low gradient viscometry and flow birefringence methods were employed to investigate DNA-surfactant and surfactant-surfactant interaction at different NaCl concentrations, [NaCl].
View Article and Find Full Text PDFSwitchable Photoacoustic Intensity of Methylene Blue via Sodium Dodecyl Sulfate Micellization.
Langmuir
January 2018
Department of NanoEngineering and ‡Department of BioEngineering, University of California San Diego, La Jolla, California 92093, United States.
The interaction between methylene blue (MB) and sodium dodecyl sulfate (SDS) has been widely studied spectroscopically, but details about their interactions remain unclear. Here, we combined photoacoustic (PA) imaging with nanoparticle tracking analysis (NTA) and spectroscopy to further elucidate this interaction. PA imaging of 0.
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