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Synthesis and magnetic properties of mesogenic side‐chain polymers containing stable radicals
Author(s) -
Allgaier Jürgen,
Finkelmann Heino
Publication year - 1994
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1994.021950318
Subject(s) - nitroxyl , radical , polymer , polymer chemistry , moiety , mesogen , side chain , chemistry , amorphous solid , nitroxide mediated radical polymerization , piperidine , photochemistry , radical polymerization , organic chemistry , liquid crystalline , polymerization
An amorphous and a liquid‐crystalline side‐chain polymer containing stable nitroxyl radicals are synthesized, the free radical being located either in a piperidine N ‐oxyl or a 1,3‐oxazolidine N ‐oxyl moiety. These polymers are available by reaction of precursor polymer having a formyl group in every repeating unit with low‐molecular‐weight nitroxyl free radicals functionalized with an amino group. The conversion of the polymer‐analogous reaction is nearly quantitative. Both the amorphous and the liquid‐crystalline polymer show paramagnetic behaviour in the temperature range from 6 to 300 K.