Synthesis, Solvatochromic Properties and pH Sensory of Novel Symmetrical Bis(Tricyanofuran)hydrazone Chromophore | ||
| Egyptian Journal of Chemistry | ||
| Article 3, Volume 62, Issue 7, July 2019, Pages 1197-1206 PDF (1.33 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejchem.2019.6576.1553 | ||
| Authors | ||
| Sherif Abdelmoez; Meram Abdelrahman; Tawfik Khattab* | ||
| Dyeing, Printing and Auxiliaries Department, Textile Industries Research Division, National Research Centre, 33 El-Buhouth Street, Dokki, Cairo 12622, Egypt | ||
| Abstract | ||
| Novel symmetrical bis(tricyanofuran) chromophore comprising a hydrazone group was prepared and characterized in order to study its solvatochromism and pH-sensory properties. The preparation of the bis(tricyanofuran)hydrazone chromophore was achieved via a diazo-coupling reaction of benzidine bis(diazonium) salt with tricyanofuran. The chemical structure of the prepared chromophore was confirmed via nuclear magnetic resonance spectroscopy (1H and 13CNMR), Fourier-transform infrared spectroscopy (FTIR), elemental analysis (C, H, N). The UV-visible absorption spectra displayed an interesting solvatochromism in different solvents depending on the polarity of the applied solvent. The pH molecular switching was stimulated under a reversible deprotonation-protonation structural change in acetone solution demonstrating color change from red to violet depending on the pH of the medium from acidic to alkaline, respectively. | ||
| Keywords | ||
| Bis-tricyanofuran; hydrazone; Solvatochromism; pH sensory | ||
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