2022
DOI: 10.1002/anie.202210211
|View full text |Cite
|
Sign up to set email alerts
|

In‐Situ Analysis of Anionic Coordination Polymerizations by Electrospray‐Ionization Mass Spectrometry

Abstract: Anionic coordination polymerizations proceed via highly reactive intermediates, whose in situ analysis has remained difficult. Here, we show that electrosprayionization mass spectrometry is a promising method to obtain detailed information on the polymerization process. Focusing on polymerization reactions of 1,3dienes initiated by CoCl 2 /RLi (R = Me, nBu, tBu, Ph), we directly observe the growing polymer chains and characterize the active anionic cobalt centers by gasphase fragmentation experiments. On the b… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1

Citation Types

0
2
0

Year Published

2022
2022
2024
2024

Publication Types

Select...
3

Relationship

1
2

Authors

Journals

citations
Cited by 3 publications
(2 citation statements)
references
References 33 publications
0
2
0
Order By: Relevance
“…This technique identifies charged species present in solution by measuring their m / z ratios, from which elemental compositions and molar mass distributions can be easily deduced [4] . Accordingly, it has been successfully applied to the in‐situ analysis of coordinative cationic [5] and coordinative anionic [6] polymerizations, in which the reactive center of the polymer chain is stabilized by binding to a transition metal [7] . Despite the great practical importance of simple transition‐metal‐free anionic polymerizations, these reactions have not been subjected to real‐time analysis by ESI‐MS.…”
Section: Introductionmentioning
confidence: 99%
“…This technique identifies charged species present in solution by measuring their m / z ratios, from which elemental compositions and molar mass distributions can be easily deduced [4] . Accordingly, it has been successfully applied to the in‐situ analysis of coordinative cationic [5] and coordinative anionic [6] polymerizations, in which the reactive center of the polymer chain is stabilized by binding to a transition metal [7] . Despite the great practical importance of simple transition‐metal‐free anionic polymerizations, these reactions have not been subjected to real‐time analysis by ESI‐MS.…”
Section: Introductionmentioning
confidence: 99%
“…Because it can provide highly-disciplined polymers, the anionic polymerization is one of the most important reactions mediated by reactive intermediates. Because of the importance, several efforts for direct analysis of the intermediate of the anionic polymerization have been studied, for example using mass spectroscopy, [16] focusing on its kinetic analysis in minute-scale. We hypothesized that, utilizing the flow inline system, highly reactive and unstable polymerized anionic intermediates, which must have the life time of second-or less scale, can be directly monitored.…”
mentioning
confidence: 99%