Journal ArticleDOI
Tandem mass spectrometry characteristics of silver-cationized polystyrenes: backbone degradation via free radical chemistry.
TLDR
The [M + Ag](+) ions of polystyrene (PS) oligomers are formed by matrix-assisted laser desorption/ionization, and their fragmentation characteristics are determined by tandem mass spectrometry experiments in a quadrupole/time-of-flight mass spectromaeter.Abstract:
The [M + Ag]+ ions of polystyrene (PS) oligomers are formed by matrix-assisted laser desorption/ionization, and their fragmentation characteristics are determined by tandem mass spectrometry experiments in a quadrupole/time-of-flight mass spectrometer. Collisionally activated dissociation (CAD) of [M + Ag]+ starts with random homolytic CC bond cleavages in the PS chain, which generate radical ions carrying either the initiating (an•, bn•) or the terminating (yn•, zn•) chain end and primary (an•, yn•) or benzylic (bn•, zn•) radical centers. The fragments ultimately observed arise by consecutive, radical-induced dissociations. The primary radical ions mainly decompose by monomer evaporation and, to a lesser extent, by β-H• loss. The benzylic radical ions primarily decompose by 1,5-H rearrangement (backbiting) followed by β C−C bond scissions; this pathway leads to either closed-shell fragments with CH2 end groups, internal fragments with 2−3 repeat units, or truncated benzylic bn•/zn• radical ions that can ...read more
Citations
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Journal ArticleDOI
High Resolution Mass Spectrometry
TL;DR: This paper presents a meta-analyses of Fourier Transform Mass Analyzers for time-of-Flight (TOF) resolution and accuracy and describes the efforts to characterize the properties of the Fourier transform process.
Mass spectrometry in polymer chemistry: A state-of-the-art up-date
Till Gruendling,Till Gruendling,Steffen M. Weidner,Jana Falkenhagen,Christopher Barner-Kowollik +4 more
TL;DR: A review of the state-of-the-art soft ionization mass spectrometers can be found in this paper, covering the latest developments of novel techniques, enabling instrumentation as well as the important applications.
Journal ArticleDOI
Mass spectrometry in polymer chemistry: a state-of-the-art up-date
Till Gruendling,Till Gruendling,Steffen M. Weidner,Jana Falkenhagen,Christopher Barner-Kowollik +4 more
TL;DR: A review of the state-of-the-art soft ionization mass spectrometers can be found in this paper, covering the latest developments of novel techniques, enabling instrumentation as well as the important applications of soft ionisation MS from the beginning of 2008.
Journal ArticleDOI
Fragmentation pathways of polymer ions.
Chrys Wesdemiotis,Nilüfer Solak,Michael J. Polce,David E. Dabney,Kittisak Chaicharoen,Bryan C. Katzenmeyer +5 more
TL;DR: This article reviews the fragmentation pathways of synthetic polymer ions that have been energized to decompose via collisionally activated dissociation (CAD), the most widely used activation method in polymer analysis.
Journal ArticleDOI
Mass Spectrometry of Synthetic Polymers
Steffen M. Weidner,Sarah Trimpin +1 more
TL;DR: The aim of this paper is to provide a Discussion of the Foundations of Solvent-Based MALDI and ESI and to clarify the role of solvent-phase separation in the synthesis of polymers.
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