The thermal behaviors and the spectral properties of the new cyclotriphosphazene compounds (3a-3d) were investigated and the results were compared in the series.
📌 3 Key Takeaways
🎯
Objective & Hypothesis: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).
📊
Key Findings & Data:The products (3a-3d) were characterized by elemental and mass analyses, FT-IR, and 1H, 13C, and 31 P NMR spectroscopies.
💡
Conclusion & Impact:The thermal behaviors and the spectral properties of the new cyclotriphosphazene compounds (3a-3d) were investigated and the results were compared in the series.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Cyclotriphosphazene · Schiff base · thermal stability
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.
DOĞAN, S., TÜMAY, S. O., BALCI, C. M., YEŞİLOT, S., BEŞLİ, S. (2020). Synthesis of new cyclotriphosphazene derivatives bearing Schiff bases and their thermal and absorbance properties. Turkish Journal of Chemistry, Cilt: 44 - Sayı: 1, 31–47. https://ajindex.com/articles/184161
De Proft F, Geerlings P. Structure, Bonding and Reactivity of Heterocyclic Compounds. Berlin, Germany: Springer, 2014
Eicher T, Hauptmann S, Seicher A. The Chemistry of Heterocycles: Structures, Reactions, Synthesis and Applications. Weinheim, Germany: Wiley-VCH, 2012
Allcock HR. Chemistry and Application of Polyphosphazenes. Hoboken, NJ, USA: Wiley-Interscience, 2003
Gleria M, De Jaeger R (editors). Applicative Aspects of Cyclophosphazenes. New York, NY, USA: Nova Science Publishers, 2004
Andrianov AK. Polyphosphazenes for Biomedical Applications. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2009
Chandrasekhar V, Krishnan V. Advances in the chemistry of chlorocyclophosphazenes. Advances in Inorganic Chemistry 2002; 53: 159-211. doi: 10.1016/S0898-8838(02)53005-1 7. Çoşut B, Durmuş M, Kılıç A, Yeşilot S. Synthesis, thermal and photophysical properties of phenoxy-substituted dendrimeric cyclic phosphazenes. Inorganica Chimica Acta 2011; 366: 161-172. doi: 10.1016/j.ica.2010.10.031 8. He Q, Dai H, Tan X, Cheng X, Liu F et al. Synthesis and characterization of room temperature columnar mesogens of cyclotriphosphazene with Schiff base units. Journal of Material Chemistry C 2013; 1: 7148-7154. doi: 10.1039/C3TC31371A 9. Ün I, Ibişoğlu H, Sahin Ün S, Çoşut B, Kılıç A. Syntheses, characterizations, thermal and photophysical properties of cyclophosphazenes containing adamantane units. Inorganica Chimica Acta 2013; 399: 219-226. doi: 10.1016/j.ica.2013.01.028 10. Tümay SO, Uslu A, Ardıç Alidağı H, Kazan HH, Bayraktar C et al. A systematic series of fluorescence chemosensors with multiple binding sites for Hg (II) based on pyrenyl-functionalized cyclotriphosphazenes and their application in live cell imaging. New Journal of Chemistry 2018; 42: 14219-14228. doi: 10.1039/C8NJ02482K 11. Mutlu Balcı C, Beşli S. The synthesis and thermal properties of fluorodioxy-substituted N, N -spiro bridged cyclotriphosphazenes. Polyhedron 2017; 126: 49-59. doi: 10.1016/j.poly.2017.01.014 12. Jimenez J, Callizo L, Serrano JL, Barbera J, Oriol L. Mixed-substituent cyclophosphazenes with calamitic and polycatenar mesogens. Inorganic Chemistry 2017; 56: 7907-7921. doi: 10.1021/acs.inorgchem.7b00612 13. Liu X, Breon JP, Chen C, Allcock HR. Substituent exchange reactions of trimeric and tetrameric aryloxycyclophosphazenes with sodium 2,2,2-trifluoroethoxide. Dalton Transactions 2012; 41: 2100-2109. doi: 10.1039/c1dt11606a 14. Prasanna D, Selvaraj V. Cyclophosphazene b