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Polyrotaxanes of Pyrene–Triazole Conjugated Azomethine and a-Cyclodextrin with High Fluorescence Properties

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: A. Farcas, N. Jarroux, I. Ghosh, P. Guegan, W.M. Nau, V. Harabagiu

Editorial: Macromolecular Chemistry and Physics, 210, p.1440–1449 , 2009.

Rezumat:

The paper reports on the preparation of a new 2-rotaxane monomer through an acid coupling reaction between 1-pyrenecarboxaldehyde and α-CD/3,5-diamino-1,2,4-triazole inclusion complex. Pyrenyl groups are large enough to provide a blocking effect towards cyclodextrin dethreading. The oxidative C-C coupling of the 2-rotaxane in the presence of RuCl3 catalyst afforded conjugated polyrotaxanes. The expected modifications of the solubility, morphology, film forming ability for rotaxane polymer were proved. As shown by fluorescence and UV-Vis spectroscopy, a material with optical properties appropriate for use in photonics was obtained.

Cuvinte cheie: aromatic azomethines, α-cyclodextrin, fluorescence enhancement, host-guest systems, photonic, pyrene