Block lengths and block sequence of linear triblock and glycerol derivatives diblock copolyethers by electrospray ionization-collision induced mass spectrometry
| Autor: | Peran Terrier, Jeanine Tortajada, Bernard Desmazières, William Buchmann |
|---|---|
| Přispěvatelé: | Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement (LAMBE), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université d'Évry-Val-d'Essonne (UEVE)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Ethylene Oxide
Glycerol Chemical ionization Electrospray Spectrometry Mass Electrospray Ionization Collision-induced dissociation Ethylene oxide Molecular Structure Chemistry Polymers Electrospray ionization 010401 analytical chemistry Analytical chemistry 010402 general chemistry Mass spectrometry Tandem mass spectrometry 01 natural sciences Sensitivity and Specificity Dissociation (chemistry) 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound Epoxy Compounds [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph] Ethers |
| Zdroj: | Analytical Chemistry Analytical Chemistry, 2006, 78 (6), pp.1801-1806. ⟨10.1021/ac051308h⟩ Analytical Chemistry, American Chemical Society, 2006, 78 (6), pp.1801-1806. ⟨10.1021/ac051308h⟩ |
| ISSN: | 0003-2700 1520-6882 |
| DOI: | 10.1021/ac051308h⟩ |
| Popis: | International audience; Chemical properties of ethylene oxide (EO) and propylene oxide (PO) block copolymers are strongly dependent on their sequence. Useful information about copolymer sequence can be obtained by tandem mass spectrometry (MS/MS). In this work, collision-induced dissociation (CID) of ammonium adducts of various linear triblock and glycerol derivative diblock copolyethers produced by electrospray ionization was studied under low-energy conditions. At first, homopolymers MS/MS spectra enabled us to identify the nature of the product ions and to suggest decomposition pathways. Then, it was shown that copolyethers with the same composition in each repeat unit but with inversed block sequences (i.e., PEO-b-PPO-b-PEO vs PPO-b-PEO-b-PPO and gPEO-b-PPO vs gPPO-b-PEO) can be easily distinguished with characteristic fragment ions. In the case of linear copolymers, CID spectra gave pertinent information about block lengths. |
| Databáze: | OpenAIRE |
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