MALDI-ToF mass spectrometry detection of intramolecular composition gradient in copolymers

Since their addition to the polymer-architecture portfolio, gradient copolymers have attracted significant attention. Up to now, however, the existence of the intramolecular composition gradient must have been ascertained by sampling during living copolymerization because a reliable method for the d...

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Bibliographic Details
Published in:Talanta (Oxford) 2019-04, Vol.195, p.215-220
Main Authors: Trhlíková, Olga, Janata, Miroslav, Walterová, Zuzana, Kanizsová, Lívia, Čadová, Eva, Horský, Jiří
Format: Article
Language:English
Subjects:
Bivariate distribution
Gradient copolymers
MALDI-TOF mass spectrometry
Polymer analysis
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Summary:Since their addition to the polymer-architecture portfolio, gradient copolymers have attracted significant attention. Up to now, however, the existence of the intramolecular composition gradient must have been ascertained by sampling during living copolymerization because a reliable method for the detection of the composition gradient in the finalized copolymer had not been established yet. Here we show that MALDI-ToF mass spectrometry not only identifies imperfect, i.e. prematurely terminated copolymers but these copolymers can be used as “time capsules” which provide information on composition evolution and the intramolecular composition gradient. [Display omitted] •MALDI-ToF MS detects the imperfect copolymers in the samples prepared by CRP.•imperfect copolymers carry the information on the composition evolution.•compositional distribution is not indicative of the copolymer sequence arrangement.
ISSN:0039-9140
1873-3573
DOI:10.1016/j.talanta.2018.11.058