[en] The low-kinetic energy collision-induced dissociation (CID) behavior of different sodiumcationized polylactide (PLA) oligomers was thoroughly investigated to shed some light on the analytical potentialities of CID experiments in the context of polymer characterization. Indeed, investigation of several end-groups modified PLA reveal that, in addition to the expected end-group specific dissociations, collisionally-excited PLA.N suffer from a backbone cleavage. The so-obtained sodium-bound dimer cations consecutively undergo the loss of a monomeric residue that corresponds to neutral acrylic acid. The experimental observations, performed on a hybrid Q-ToF instrument, were totally corroborated by a theoretical study involving DFT calculations, molecular mechanics, and molecular dynamics calculations.
Disciplines :
Chimie Physique
Auteur, co-auteur :
De Winter, Julien ; Université de Mons > Faculté des Sciences > Synthèse et spectrométrie de masse organiques
Lemaur, Vincent ; Université de Mons > Faculté des Sciences > Chimie des matériaux nouveaux
Marsal, Philippe
Coulembier, Olivier ; Université de Mons > Faculté des Sciences > Matériaux Polymères et Composites
Cornil, Jérôme ; Université de Mons > Faculté des Sciences > Chimie des matériaux nouveaux
Dubois, Philippe ; Université de Mons > Faculté des Sciences > Matériaux Polymères et Composites
Gerbaux, Pascal ; Université de Mons > Faculté des Sciences > Synthèse et spectrométrie de masse organiques
Langue du document :
Anglais
Titre :
Mechanistic Study of the Collision-Induced Dissociation of Sodium-Cationized Polylactide Oligomers: A Joint Experimental and Theoretical Investigation
Date de publication/diffusion :
01 juillet 2010
Titre du périodique :
Journal of the American Society for Mass Spectrometry
ISSN :
1044-0305
eISSN :
1879-1123
Maison d'édition :
Springer, New-York, Etats-Unis - New York
Volume/Tome :
21
Fascicule/Saison :
7
Pagination :
1159-1168
Peer reviewed :
Peer reviewed vérifié par ORBi
Unité de recherche :
S816 - Matériaux Polymères et Composites S817 - Chimie des matériaux nouveaux S836 - Synthèse et spectrométrie de masse organiques
Institut de recherche :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
Commentaire :
Publié en ligne le 27 mars 2010
Lecture en ligne: http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TH2-4YPT1R8-2-17&_cdi=5270&_user=532054&_pii=S1044030510002163&_origin=search&_coverDate=07%2F31%2F2010&_sk=999789992&view=c&wchp=dGLbVlb-zSkzV&md5=51f23475a83cef8d0f82d47fc82088e
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