Effects of the net charge on abundance and stability of supramolecular surfactant aggregates in gas phase

Vincenzo Turco Liveri, Angela Monia Ruggirello, Leopoldo Ceraulo, Serena Indelicato, David Bongiorno, Mirella Ferrugia, Serena Indelicato, Mirella Ferrugia, David Bongiorno, Angela Ruggirello, Vincenzo Turco Liveri, Leopoldo Ceraulo, Gianluca Giorgi

Risultato della ricerca: Article

17 Citazioni (Scopus)

Abstract

Self-assembling of amphiphilic molecules under electrospray ionization (ESI) conditions is characterized by quite unexpected phenomenology. The noticeable differences with respect to the condensed phase are attributable to the absence of the surfactant-solvent interactions, the presence of net charge in the aggregates, and the strong deviation from equilibrium conditions. Aiming to investigate the effects of the net charge on abundance and stability of supramolecular surfactant aggregates, positively and negatively charged aggregates of sodium bis(2-ethylhexyl)sulfosuccinate (AOT) and sodium methane sulfonate (MetS), butane sulfonate (ButS) and octane sulfonate (OctS) have been studied by ESI mass spectrometry, energy resolved mass spectrometry and density functional theory calculations. The negatively charged aggregates are found to be less stable than their positive counterparts. The results are consistent with a self-assembling pattern dominated by electrostatic interactions involving the counterions and head groups of the investigated amphiphilic compounds while the alkyl chains point outwards, protecting the aggregates from unlimited growth processes.
Lingua originaleEnglish
pagine (da-a)195-201
Numero di pagine7
RivistaJournal of Mass Spectrometry
Volume46
Stato di pubblicazionePublished - 2011

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Surface-Active Agents
Gases
Electrospray ionization
Mass spectrometry
Dioctyl Sulfosuccinic Acid
Methane
Coulomb interactions
Density functional theory
Sodium
Molecules

All Science Journal Classification (ASJC) codes

  • Spectroscopy

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Effects of the net charge on abundance and stability of supramolecular surfactant aggregates in gas phase. / Turco Liveri, Vincenzo; Ruggirello, Angela Monia; Ceraulo, Leopoldo; Indelicato, Serena; Bongiorno, David; Ferrugia, Mirella; Indelicato, Serena; Ferrugia, Mirella; Bongiorno, David; Ruggirello, Angela; Liveri, Vincenzo Turco; Ceraulo, Leopoldo; Giorgi, Gianluca.

In: Journal of Mass Spectrometry, Vol. 46, 2011, pag. 195-201.

Risultato della ricerca: Article

Turco Liveri, V, Ruggirello, AM, Ceraulo, L, Indelicato, S, Bongiorno, D, Ferrugia, M, Indelicato, S, Ferrugia, M, Bongiorno, D, Ruggirello, A, Liveri, VT, Ceraulo, L & Giorgi, G 2011, 'Effects of the net charge on abundance and stability of supramolecular surfactant aggregates in gas phase', Journal of Mass Spectrometry, vol. 46, pagg. 195-201.
Turco Liveri V, Ruggirello AM, Ceraulo L, Indelicato S, Bongiorno D, Ferrugia M e altri. Effects of the net charge on abundance and stability of supramolecular surfactant aggregates in gas phase. Journal of Mass Spectrometry. 2011;46:195-201.
Turco Liveri, Vincenzo ; Ruggirello, Angela Monia ; Ceraulo, Leopoldo ; Indelicato, Serena ; Bongiorno, David ; Ferrugia, Mirella ; Indelicato, Serena ; Ferrugia, Mirella ; Bongiorno, David ; Ruggirello, Angela ; Liveri, Vincenzo Turco ; Ceraulo, Leopoldo ; Giorgi, Gianluca. / Effects of the net charge on abundance and stability of supramolecular surfactant aggregates in gas phase. In: Journal of Mass Spectrometry. 2011 ; Vol. 46. pagg. 195-201.
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abstract = "Self-assembling of amphiphilic molecules under electrospray ionization (ESI) conditions is characterized by quite unexpected phenomenology. The noticeable differences with respect to the condensed phase are attributable to the absence of the surfactant-solvent interactions, the presence of net charge in the aggregates, and the strong deviation from equilibrium conditions. Aiming to investigate the effects of the net charge on abundance and stability of supramolecular surfactant aggregates, positively and negatively charged aggregates of sodium bis(2-ethylhexyl)sulfosuccinate (AOT) and sodium methane sulfonate (MetS), butane sulfonate (ButS) and octane sulfonate (OctS) have been studied by ESI mass spectrometry, energy resolved mass spectrometry and density functional theory calculations. The negatively charged aggregates are found to be less stable than their positive counterparts. The results are consistent with a self-assembling pattern dominated by electrostatic interactions involving the counterions and head groups of the investigated amphiphilic compounds while the alkyl chains point outwards, protecting the aggregates from unlimited growth processes.",
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T1 - Effects of the net charge on abundance and stability of supramolecular surfactant aggregates in gas phase

AU - Turco Liveri, Vincenzo

AU - Ruggirello, Angela Monia

AU - Ceraulo, Leopoldo

AU - Indelicato, Serena

AU - Bongiorno, David

AU - Ferrugia, Mirella

AU - Indelicato, Serena

AU - Ferrugia, Mirella

AU - Bongiorno, David

AU - Ruggirello, Angela

AU - Liveri, Vincenzo Turco

AU - Ceraulo, Leopoldo

AU - Giorgi, Gianluca

PY - 2011

Y1 - 2011

N2 - Self-assembling of amphiphilic molecules under electrospray ionization (ESI) conditions is characterized by quite unexpected phenomenology. The noticeable differences with respect to the condensed phase are attributable to the absence of the surfactant-solvent interactions, the presence of net charge in the aggregates, and the strong deviation from equilibrium conditions. Aiming to investigate the effects of the net charge on abundance and stability of supramolecular surfactant aggregates, positively and negatively charged aggregates of sodium bis(2-ethylhexyl)sulfosuccinate (AOT) and sodium methane sulfonate (MetS), butane sulfonate (ButS) and octane sulfonate (OctS) have been studied by ESI mass spectrometry, energy resolved mass spectrometry and density functional theory calculations. The negatively charged aggregates are found to be less stable than their positive counterparts. The results are consistent with a self-assembling pattern dominated by electrostatic interactions involving the counterions and head groups of the investigated amphiphilic compounds while the alkyl chains point outwards, protecting the aggregates from unlimited growth processes.

AB - Self-assembling of amphiphilic molecules under electrospray ionization (ESI) conditions is characterized by quite unexpected phenomenology. The noticeable differences with respect to the condensed phase are attributable to the absence of the surfactant-solvent interactions, the presence of net charge in the aggregates, and the strong deviation from equilibrium conditions. Aiming to investigate the effects of the net charge on abundance and stability of supramolecular surfactant aggregates, positively and negatively charged aggregates of sodium bis(2-ethylhexyl)sulfosuccinate (AOT) and sodium methane sulfonate (MetS), butane sulfonate (ButS) and octane sulfonate (OctS) have been studied by ESI mass spectrometry, energy resolved mass spectrometry and density functional theory calculations. The negatively charged aggregates are found to be less stable than their positive counterparts. The results are consistent with a self-assembling pattern dominated by electrostatic interactions involving the counterions and head groups of the investigated amphiphilic compounds while the alkyl chains point outwards, protecting the aggregates from unlimited growth processes.

KW - DFT calculations

KW - anhydrous reverse micelles

KW - electrospray ionization

KW - energy-resolved mass spectrometry

KW - self-assembling

UR - http://hdl.handle.net/10447/54569

M3 - Article

VL - 46

SP - 195

EP - 201

JO - Journal of Mass Spectrometry

JF - Journal of Mass Spectrometry

SN - 1076-5174

ER -

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