Self-assembly and intra-cluster reactions of erbium and ytterbiumbis(2-ethylhexyl)sulfosuccinates in the gas phase

Vincenzo Turco Liveri, Serena Indelicato, David Bongiorno, Leopoldo Ceraulo, Francesca Castiglione, Walter Panzeri, Andrea Mele

Risultato della ricerca: Article

2 Citazioni (Scopus)

Abstract

RATIONALE: The study of surfactant organization in vacuum allows surfactant–surfactant interaction to be unveiled inthe absence of surrounding solvent molecules. Knowledge on their chemical-physical properties may also lead to thedefinition of more efficient gas-phase carriers, air-cleaning agents and nanoreactors. In addition, the presence oflanthanide-group ions adds unique photochemical properties to surfactants.METHODS: The structural features, stability and fragmentation patterns of charged aggregates formed by lanthanide-functionalized surfactants, ytterbium and erbium bis(2-ethylhexyl)sulfosuccinate ((AOT) 3 Yb and (AOT) 3 Er), have beeninvestigated by electrospray ionization mass spectrometry (ESI-MS), tandem mass spectrometry (ESI-MS/MS) andenergy-resolved mass spectrometry (ER-MS).RESULTS: The experimental data indicate that the self-assembling of (AOT) 3 Yb and (AOT) 3 Er in the gas phase leads tothe formation of a wide range of singly charged aggregates differing in their aggregation number, relative abundance andstability. In addition to specific effects on aggregate organization due to the presence of lanthanide ions, ER-MSexperiments show rearrangements and in-cage reactions activated by collision, eventually including alkyl chain intra-cluster migration.CONCLUSIONS: Analysis of the experimental findings suggests that the observed chemical transformations occurwithin an organized supramolecular assembly rather than in a random association of components. The fragmentationpathways leading to the neutral loss of a fragment of nominal mass 534 Da, assigned as C 28 H 54 O 7 S, from some positivelycharged aggregates has been rationalized.
Lingua originaleEnglish
pagine (da-a)2523-2530
Numero di pagine8
RivistaRapid Communications in Mass Spectrometry
Volume28
Stato di pubblicazionePublished - 2014

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Erbium
Self assembly
Gases
Surface-Active Agents
Mass spectrometry
Lanthanoid Series Elements
Ytterbium
Nanoreactors
Ions
Electrospray ionization
Cleaning
Agglomeration
Physical properties
Association reactions
Vacuum
Molecules
thiosuccinic acid
Air

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry

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@article{28859a2e1e5644dcb972b77ea33b6973,
title = "Self-assembly and intra-cluster reactions of erbium and ytterbiumbis(2-ethylhexyl)sulfosuccinates in the gas phase",
abstract = "RATIONALE: The study of surfactant organization in vacuum allows surfactant–surfactant interaction to be unveiled inthe absence of surrounding solvent molecules. Knowledge on their chemical-physical properties may also lead to thedefinition of more efficient gas-phase carriers, air-cleaning agents and nanoreactors. In addition, the presence oflanthanide-group ions adds unique photochemical properties to surfactants.METHODS: The structural features, stability and fragmentation patterns of charged aggregates formed by lanthanide-functionalized surfactants, ytterbium and erbium bis(2-ethylhexyl)sulfosuccinate ((AOT) 3 Yb and (AOT) 3 Er), have beeninvestigated by electrospray ionization mass spectrometry (ESI-MS), tandem mass spectrometry (ESI-MS/MS) andenergy-resolved mass spectrometry (ER-MS).RESULTS: The experimental data indicate that the self-assembling of (AOT) 3 Yb and (AOT) 3 Er in the gas phase leads tothe formation of a wide range of singly charged aggregates differing in their aggregation number, relative abundance andstability. In addition to specific effects on aggregate organization due to the presence of lanthanide ions, ER-MSexperiments show rearrangements and in-cage reactions activated by collision, eventually including alkyl chain intra-cluster migration.CONCLUSIONS: Analysis of the experimental findings suggests that the observed chemical transformations occurwithin an organized supramolecular assembly rather than in a random association of components. The fragmentationpathways leading to the neutral loss of a fragment of nominal mass 534 Da, assigned as C 28 H 54 O 7 S, from some positivelycharged aggregates has been rationalized.",
keywords = "AOT, Er, Lanthanides, Mass spectrometry, Yb, self Assembly",
author = "{Turco Liveri}, Vincenzo and Serena Indelicato and David Bongiorno and Leopoldo Ceraulo and Francesca Castiglione and Walter Panzeri and Andrea Mele",
year = "2014",
language = "English",
volume = "28",
pages = "2523--2530",
journal = "Rapid Communications in Mass Spectrometry",
issn = "0951-4198",
publisher = "John Wiley and Sons Ltd",

}

TY - JOUR

T1 - Self-assembly and intra-cluster reactions of erbium and ytterbiumbis(2-ethylhexyl)sulfosuccinates in the gas phase

AU - Turco Liveri, Vincenzo

AU - Indelicato, Serena

AU - Bongiorno, David

AU - Ceraulo, Leopoldo

AU - Castiglione, Francesca

AU - Panzeri, Walter

AU - Mele, Andrea

PY - 2014

Y1 - 2014

N2 - RATIONALE: The study of surfactant organization in vacuum allows surfactant–surfactant interaction to be unveiled inthe absence of surrounding solvent molecules. Knowledge on their chemical-physical properties may also lead to thedefinition of more efficient gas-phase carriers, air-cleaning agents and nanoreactors. In addition, the presence oflanthanide-group ions adds unique photochemical properties to surfactants.METHODS: The structural features, stability and fragmentation patterns of charged aggregates formed by lanthanide-functionalized surfactants, ytterbium and erbium bis(2-ethylhexyl)sulfosuccinate ((AOT) 3 Yb and (AOT) 3 Er), have beeninvestigated by electrospray ionization mass spectrometry (ESI-MS), tandem mass spectrometry (ESI-MS/MS) andenergy-resolved mass spectrometry (ER-MS).RESULTS: The experimental data indicate that the self-assembling of (AOT) 3 Yb and (AOT) 3 Er in the gas phase leads tothe formation of a wide range of singly charged aggregates differing in their aggregation number, relative abundance andstability. In addition to specific effects on aggregate organization due to the presence of lanthanide ions, ER-MSexperiments show rearrangements and in-cage reactions activated by collision, eventually including alkyl chain intra-cluster migration.CONCLUSIONS: Analysis of the experimental findings suggests that the observed chemical transformations occurwithin an organized supramolecular assembly rather than in a random association of components. The fragmentationpathways leading to the neutral loss of a fragment of nominal mass 534 Da, assigned as C 28 H 54 O 7 S, from some positivelycharged aggregates has been rationalized.

AB - RATIONALE: The study of surfactant organization in vacuum allows surfactant–surfactant interaction to be unveiled inthe absence of surrounding solvent molecules. Knowledge on their chemical-physical properties may also lead to thedefinition of more efficient gas-phase carriers, air-cleaning agents and nanoreactors. In addition, the presence oflanthanide-group ions adds unique photochemical properties to surfactants.METHODS: The structural features, stability and fragmentation patterns of charged aggregates formed by lanthanide-functionalized surfactants, ytterbium and erbium bis(2-ethylhexyl)sulfosuccinate ((AOT) 3 Yb and (AOT) 3 Er), have beeninvestigated by electrospray ionization mass spectrometry (ESI-MS), tandem mass spectrometry (ESI-MS/MS) andenergy-resolved mass spectrometry (ER-MS).RESULTS: The experimental data indicate that the self-assembling of (AOT) 3 Yb and (AOT) 3 Er in the gas phase leads tothe formation of a wide range of singly charged aggregates differing in their aggregation number, relative abundance andstability. In addition to specific effects on aggregate organization due to the presence of lanthanide ions, ER-MSexperiments show rearrangements and in-cage reactions activated by collision, eventually including alkyl chain intra-cluster migration.CONCLUSIONS: Analysis of the experimental findings suggests that the observed chemical transformations occurwithin an organized supramolecular assembly rather than in a random association of components. The fragmentationpathways leading to the neutral loss of a fragment of nominal mass 534 Da, assigned as C 28 H 54 O 7 S, from some positivelycharged aggregates has been rationalized.

KW - AOT

KW - Er

KW - Lanthanides

KW - Mass spectrometry

KW - Yb

KW - self Assembly

UR - http://hdl.handle.net/10447/100787

M3 - Article

VL - 28

SP - 2523

EP - 2530

JO - Rapid Communications in Mass Spectrometry

JF - Rapid Communications in Mass Spectrometry

SN - 0951-4198

ER -