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Universal mass spectrometric analysis of poly(ionic liquid)s.
Martina M Cecchini1, Jan Steinkoenig2,3, Samantha Reale1
1Dipartimento di Scienze Fisiche e Chimiche , Università degli Studi dell'Aquila , Via Vetoio , Coppito , 67100 , L'Aquila , Italy .
Chemical Science
|August 30, 2018
Summary
We present a universal high-resolution mass spectrometry method for analyzing challenging poly(ionic liquid)s (PILs). This new analytical platform provides detailed insights into PIL structures and ionization behavior.
Area of Science:
- Polymer Chemistry
- Analytical Chemistry
- Mass Spectrometry
Background:
- Poly(ionic liquid)s (PILs) are complex polyelectrolytes posing significant analytical challenges.
- Existing mass spectrometry methods struggle to provide comprehensive analysis of PILs.
Purpose of the Study:
- To develop a universal high-resolution mass spectrometry (MS) method for detailed analysis of poly(ionic liquid)s (PILs).
- To investigate the influence of core structures and polymer types on PIL ionization behavior.
- To analyze the impact of variable end-group functionalities introduced via reversible addition-fragmentation chain transfer (RAFT) polymerization.
Main Methods:
- Fusion of high-resolution collision-induced dissociation (CID)-Orbitrap mass spectrometry (MS) with supercharging agents.
- Utilizing quadrupole time-of-flight (QToF) MS for analysis.
- Negative mode analysis of hydrophilic halide-containing PILs.
Main Results:
- Detailed mapping of ionization behavior across various PIL core structures (imidazolium, triazolium, ammonium, phosphonium, pyridinium).
- Analysis of styrene-, acrylate-, and vinyl-type IL polymers, including vinylimidazolium halide IL polymers.
- Demonstrated the behavior of variable end-group functionalities during MS analysis.
Conclusions:
- Introduction of a novel analytical technology platform for the comprehensive analysis of poly(ionic liquid)s.
- The developed method overcomes previous analytical limitations for this class of polyelectrolytes.
- Provides a foundation for future studies on PIL structure-property relationships.
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