A competitive sensing system based on cyclobis(paraquat-p-phenylene) and a new ?-cyclodextrin-tetrathiafulvalene derivative
Résumé
We report the synthesis of 4,5-di(ethylthio)-4'-[6-deoxy-β-cyclodextrin-6-yl-aminocarbonyl]-tetrathiafulvalene (β-CD-DET-TTF) and its inclusion abilities toward cyclobis(paraquat-p-phenylene) (CBPQT4+) and 1-naphthol. The structure of the synthesized compound has been established by mass spectrometry and 1H NMR spectra combined with a theoretical MM3 and AM1 study. The sensor affords a charge transfer (CT) complex with the CBPQT4+ and is able to include 1-naphthol in the cyclodextrin cavity. The complexes were characterized experimentally by UV-VIS spectroscopy and simulated by a MM3 docking procedure. The sensing ability of the β-CD-DET-TTF/CBPQT4+ complex towards 1-naphthol has been investigated by a competitive spectral method.
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