Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12779/5492
Title: Surfactant self-assembly in the gas phase: Bis(2-ethylhexyl)sulfosuccinate- alkaline metal ion aggregates
Authors: Giorgi, Gianluca 
Leopoldo, Ceraulo
VINCENZO TURCO, Liveri
Issue Date: 2008
Project: None 
Journal: JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL
Abstract: 
The coating effect of alkali metal salt clusters by the surfactant anion bis(2-ethylhexyl)sulfosuccinate has been investigated by electrospray ionization mass spectrometry (MS) and MS/MS. The analysis of the data emphasized the formation and stability in the gas phase of reverse micelle-like surfactant aggregates carrying in their interior ionic clusters. Two main contributions have been postulated to account for the observed stability: intra-aggregate electrostatic interactions and screening of inter-aggregate attractive interactions due to the exclusion volume effect caused by the surfactant alkyl chains. Moreover, the stability and structural arrangement of these supramolecular aggregates result in strong dependency on the alkali metal salt identity.
Description: 
23457
URI: http://hdl.handle.net/20.500.12779/5492
ISSN: 1520-6106
DOI: 10.1021/jp0773785
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