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Just Add Salt: A Mass Spectrometric Analysis Method for Imaging Anion‐Exchanged Poly(Ionic Liquid)s
Author(s) -
Steinkoenig Jan,
Cecchini Martina M.,
Goldmann Anja S.,
Reale Samantha,
Angelis Francesco De,
BarnerKowollik Christopher
Publication year - 2016
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201600376
Subject(s) - ionic liquid , chemistry , mass spectrometry , ion , salt (chemistry) , chloride , dissociation (chemistry) , ionic bonding , orbitrap , analytical chemistry (journal) , inorganic chemistry , chromatography , organic chemistry , catalysis
We report the first mass spectrometric analysis of poly(ionic liquid)s (PILs) containing weakly coordinating anions introduced by a fast, simple, and quantitative postmodification method on the example of the hydrophilic, well‐defined poly(vinylbenzylpyridinium chloride) p([VBPy]Cl) species, analyzed with an in‐source collision induced dissociation‐Orbitrap mass spectrometry (MS) protocol. Using the MS approach allows for the precise structural elucidation of ion‐exchanged p([VBPy]Cl) utilizing AgX (X = NO 3 − , CF 3 CO 2 − , BF 4 − ) salts. The anion exchange is shown to be quantitative – without observing residual chlorinated PIL – on rapid time scales, using only filtration as a standard procedure during sample preparation. In addition, the influence of weakly coordinating anions on the ionization behavior of PILs is studied in detail.