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Laser Induced Marking of Polymer Chains with Radical Spin Traps
Author(s) -
Junkers Tanja,
Wong Edgar H. H.,
Szablan Zachary,
Davis Thomas P.,
Stenzel Martina H.,
BarnerKowollik Christopher
Publication year - 2008
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.200700820
Subject(s) - radical , radical polymerization , polymer , laser , mass spectrometry , nitrone , polymerization , photochemistry , chemistry , materials science , polymer chemistry , optics , physics , organic chemistry , chromatography , cycloaddition , catalysis
A pathway for marking of polymer chains with radical spin traps during pulsed laser polymerization in free radical polymerization is presented. By introducing a so‐called marker that forms a non‐propagating radical at (or shortly after) the incidence of a laser pulse, a polymer subdistribution is generated by specifically terminating propagating radicals via combination with such a marker radical. The generated polymer subdistribution can subsequently be imaged by modern soft‐ionization mass spectrometry. Herein, the general methodology of the method in which such marker is generated via reaction of an initiating radical with a nitrone is demonstrated on the examples of BA and VAc.