ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The solution properties of polymeric 10,12-pentacosadinyl 4-pyridinecarboxylate (polymer 1), obtained by UV- or γ-ray initiated solid state polymerization, are described, as studied by UV/VIS- and 13C-NMR spectroscopy, and by viscosity measurements. Treatment of the polymer solution with non-solvents of the polymer, protic acids, or transition metal halides induces a colour change from yellow to red, accompanied by a protonation or metal complex formation of the pyridine substituent groups, respectively. Reverse colour changes occur, if bases (e.g. triethylamine) or complexing agents, able to form metal complexes more stable than those of the polymer (e.g. 2,2′-bipyridine), are added to the red polymer solutions. The origin of the colour changes and the structures of the protonated polymer and of the polymer-metal complexes are discussed.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1984.021850718
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