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2010-07-01 - Article/Dans un journal avec peer-review - Anglais - 10 page(s)

De Winter Julien , Lemaur Vincent , Marsal Philippe, Coulembier Olivier , Cornil Jérôme , Dubois Philippe , Gerbaux Pascal , "Mechanistic Study of the Collision-Induced Dissociation of Sodium-Cationized Polylactide Oligomers: A Joint Experimental and Theoretical Investigation" in Journal of the American Society for Mass Spectrometry, 21, 7, 1159-1168

  • Edition : Springer, New-York (NY)
  • Codes CREF : Chimie macromoléculaire (DI1315), Chimie quantique (DI1321), Catalyses hétérogène et homogène (DI1334), Optique (DI1250), Chimie organique (DI1313), Chimie générale (DI1310)
  • Unités de recherche UMONS : Matériaux Polymères et Composites (S816), Chimie des matériaux nouveaux (S817), Synthèse et spectrométrie de masse organiques (S836)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
Texte intégral :

Abstract(s) :

(Anglais) 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.

Notes :
  • (Anglais) Publié en ligne le 27 mars 2010
  • (Anglais) 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
Identifiants :
  • DOI : 10.1016/j.jasms.2010.03.026