ISSN:
1022-1352
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Two new conjugated polyradicals with imino nitroxide groups, poly[2-(3,4-diethynylphenyl)-4,4,5,5-tetramethylimidazolinyl-1-oxyl] (3) and poly[2-(3,5-diethynylphenyl)-4,4,5,5-tetramethylimidazolinyl-1-oxyl] (4), were prepared. Spectroscopic methods (IR, UV, ESR, MS) were used for the characterization. The polyradicals were precipitated from pyridine/methylene chloride solution by hexane and investigated magnetically. In the temperature range 78-300 K, polyradical 3 was paramagnetic. The magnetic behavior of polymer 4 pointed to very weak antiferromagnetism. The magnetic properties of 3 and 4 were compared to those of previously described corresponding polymers containing nitronyl nitroxide groups.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1996.021970421
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