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- W2006231846 abstract "Unlike synthetic polymers of other classes, polyconjugated systems, show properties which to a considerable extent, are due to conformation transformations of the main chain. These transformations are clearly revealed in luminescence spectra. The luminescence spectra of polypropiolic acid of different configurations have been studied both in solution and in the solid phase. The effects of conformation transformations on the effective conjugation length have been found for various values of the pH. The processes of excitation energy transfer in polyconjugated systems have been investigated. A l'inverse de polymères synthétiques d'autres catégories, les systèmes polyconjugués on des propriétés qui sont, pour une part considérable, dues aux transformations de conformation de la chaîne principale. Ces transformations sont clairement mises en évidence sur des spectres de luminescence. On a étudié, à la fois en solution et en phase solide, les spectres de luminescence de l'acide polypropiolique de configurations différentes. On a trouvé pour différentes valeurs de pH, des effets des transformations de conformation sur la longueur de conjugaison effective. On a examiné les processus de transfert d'énergie d'excitation dans les systèmes polyconjugués. Al contrario di polimeri sintetici di altre classi, i sistemi policoniugati mostrano proprietà che sono dovuti in misura notevole a trasformazioni di conformazione della catena principale. Tali trasformazioni si rivelano chiaramente in spettri luminescenti. Si sono studiati gli spettri luminescenti di acido polipropiolico di differenti configurazioni sia in soluzione che in fase solida. Si sono trovati effetti di trasformazioni di conformazione sulla lunghezza effettiva di coniugazione per diversi valori di pH. Si è esaminato il processo del trasferimento dell'energia d'eccitazione. Polykonjugierte Systeme zeigen, zum Unterschied von synthetischen Polymeren anderer Klassen, Eigenschaften, die weitgehend auf Konformationsumwandlungen in der Hauptkette zurückzuführen sind. Diese Umwandlungen kommen in den Lumineszenzspektren deutlich zum Ausdruck. Die Lumineszenzspektren von Polypropiolsäure mit verschiedenen Konfigurationen wurden in Lösung und in fester Phase untersucht. Der Einfluβ von Konformationsumwandlungen auf die effektive Konjugationslänge wurde für verschiedene pH Werte festgestellt. Die Prozesse des Transfers der Anregungsenergie in polykonjugierten Systemen wurde untersucht." @default.
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- W2006231846 date "1971-11-01" @default.
- W2006231846 modified "2023-09-23" @default.
- W2006231846 title "On certain peculiarities of polyconjugated systems" @default.
- W2006231846 doi "https://doi.org/10.1016/0014-3057(71)90025-5" @default.
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