Abstract
Two types of linear oligomers, namely Ph/NH2and NH2/NH2end-capped oligoanilines have been synthesized by SNAr coupling/reduction sequence. The1H NMR spectra of obtained compounds are strongly influenced by electron withdrawing or electron donating effects of the terminal groups(NO2or NH2, respectively). The UV-Vis spectra of nitroamines exhibit two peaks characteristic for two types of the phenylene substituents(-NH- or NO2), whereas UV-Vis spectra of oligoanilines show only one peak attributed to theΠ-Π* transition in the phenylene rings. The oxidation of oligoanilines was also followed by UV-Vis spectroscopy.
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