Polyphenylenepyridines based on acetylaromatic compounds

Kovalev, A.I.; Khotina, I.A.; Kovaleva, M.A.; Naumkin, A.V.; Ionova, I.S.; Yaroslav, O.M.

Авторы: Kovalev Alexey I., Khotina Irina A., Kovaleva Maria A., Naumkin Alexander V., Ionova Irina S., Yaroslav O.Mezhuev
Журнал: Journal of Composites Science
Том: 7
Год издания: 2023
Издательство: MDPI
Местоположение издательства: Basel, Switzerland
Первая страница: 1
Последняя страница: 14
Номер статьи: 359
DOI: 10.3390/jcs7090359
Аннотация: Nitrogen-containing polyphenylene type polymers containing pyridine rings have been obtained.The polymer-forming reaction is based on the interaction of diacetylarylene and triethy-lorthoformatewith the formation of the pyrylium salt and subsequent treatment of the intermediate product with ammonia.The optimal ratios of the reagents for the formation of the pyridine fragment were determined. The mechanism of the main reaction has been discussed.The formation of the pyridine ring and phentriyl fragments was confirmed by 1H NMR data on the example of model reactions. After heating at a temperature of 450°C, when a more complete polycondensation process occurs, the polymers reach high values of thermal characteriscics -10% weight loss in an inert atmosphere corresponds to 600°C.The structure of the synthesized polymers was confirmed by elemental analysis IR, XPS, and EPR spectroscopy.The conjugation length in cross-linked polyphenylenepyridines can be controlled by varying the arylene bridge groups between the phentriyl fragments, which opens up opportunities for the development of new composite materials for electrical applications.
Добавил в систему: Ковалев Алексей Иванович

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