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Khattab, Tawfik A.; Gaffer, Hatem E.; Aly, Sherif Abdelmoez; Klapötke, Thomas M. (2016): Synthesis, Solvatochromism, Antibacterial Activity and Dyeing Performance of Tricyanofuran-Hydrazone Analogues. In: ChemistrySelect, Vol. 1, No. 21: pp. 6805-6809
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Four novel tricyanofuran disperse dyestuffs 3a-d bearing hydrazone moiety were synthesized in order to investigate their possible antibacterial activity. The hydrazone moiety was introduced via azo-coupling of the tricyanofuran with the appropriately functionalized diazonium salt. The optical properties of these compounds showed interesting solvatochromic properties. The absorption peaks are observed in the wavelength range 454-513 nm. It can also be seen that they display different maximum emissions in the wavelength range 528-615 nm. The functional groups attached to the hydrazone moiety influenced both on absorption and emission maxima. The prepared hydrazone-based disperse dyes were applied for dyeing polyester fabrics, affording satisfactory results. Furthermore, compounds 3a and 3c demonstrated a relatively strong antibacterial activity against some selected gram positive Staphylococcus aureus and Bacillus subtilis;and gram negative Escherichia coli and Pseudomonas aeuroginosa employing Ampicillin as standard drug.