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Synthesis and magnetic properties of mesogenic side-chain polymers containing stable radicals

✍ Scribed by Jürgen Allgaier; Heino Finkelmann

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
804 KB
Volume
195
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

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.

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