Synthesis of new cyclotriphosphazene derivatives bearing Schiff bases and their thermal and absorbance properties

Authors : Semih Doğan, Süreyya Oğuz Tümay, Ceylan Mutlu Balci, Serkan Yeşilot, Serap Beşli

Pages : 31-47

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Publication Date : 9999-12-31

Article Type : Makaleler

Abstract :In this study, a series of cyclotriphosphazene derivatives containing a Schiff base (3a-3d) were synthesized by the reactions of hexachlorocyclotriphosphazene (1) with bis-aryl Schiff bases (2a-2d) having different terminal groups (H, F, Cl, and Br). The products (3a-3d) were characterized by elemental and mass analyses, FT-IR, and 1H, 13C, and 31 P NMR spectroscopies. Furthermore, the structure of compound 3a was also determined by X-ray crystallography. The thermal behaviors and the spectral properties of the new cyclotriphosphazene compounds (3a-3d) were investigated and the results were compared in the series.
Keywords : Cyclotriphosphazene, Schiff base, thermal stability, UV absorption, substituent effect