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New cationic cyanine dyes, containing electron donor 10-alkyl-phenothiazine and electron acceptor pyridinium units connected through a vinylene bridge were conveniently synthesized by microwaves assisted condensation of phenothiazine carbaldehyde with methylpyridinium salts in dry media. Their photophysical properties revealing strong absorption bands in 440–470 nm region (ɛ ≈ 104–105) and large Stokes...
2,6-Dimethyl-4-(4-tert-butylphenyldiazenyl)phenyl acrylate (C 21 H 24 N 2 O 2 ), containing an acryloyloxy group, first 2,6-dimethyl-4-(4-tert-butylphenyldiazenyl)phenol was prepared by reacting 4-tert-butylbenzenediazonium salt with 2,6-dimethylphenol and then its acryloyloxy derivative was synthesized in a Schotten–Bauman-type reaction. The characterisation of the...
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