Surfactant self-assembly in the gas phase: bis(2-ethylhexyl)sulfosuccinate-alkaline metal ion aggregates

Article Abstract:

The electrospray ionization mass spectrometry was used to study the coating effect of alkali metal salt clusters by the surfactant anion bis(2-ethylhexyl)sulfosuccinate. The results provide insight into the significant role of electrostatic interactions and of the charge screening by the surfactant alkyl chains in the stabilization of cluster-containing reverse micelle-like aggregates both from decomposition as well as from an unlimited growth.

Alkali metals, Ionization, Chemical properties, Ethyl acetate

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2-Aminopurine excited state electronic structure measured by Stark spectroscopy

Article Abstract:

Stark spectroscopy is used for studying the excited state properties of 2-aminopurine (2AP) and 2-amino,9-methylpurine (2A9MP) in frozen solutions. The results are combined with state-of-the-art ab initio electronic structure calculations are used for elucidating the directions and magnitudes of dipole moments in the molecular frame.

Electric properties, Spectra, Dipole moments, Purines, Stark effect

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