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Full-Text Articles in Physical Sciences and Mathematics
Nucleophilic Substitution Reactions Of Monofunctional Nucleophilic Reagents Withcyclotriphosphazenes Containing 2,2-Dioxybiphenyl Units, Esra Tanriverdi̇ Eçi̇k, Hani̇fe İbi̇şoğlu, Gönül Yeni̇lmez Çi̇ftçi̇, Gi̇zem Demi̇r, Eda Erdemi̇r, Fatma Yüksel
Nucleophilic Substitution Reactions Of Monofunctional Nucleophilic Reagents Withcyclotriphosphazenes Containing 2,2-Dioxybiphenyl Units, Esra Tanriverdi̇ Eçi̇k, Hani̇fe İbi̇şoğlu, Gönül Yeni̇lmez Çi̇ftçi̇, Gi̇zem Demi̇r, Eda Erdemi̇r, Fatma Yüksel
Turkish Journal of Chemistry
The nucleophilic substitution reactions of mono- and bis-spiro-2,2' -dioxybiphenyl cyclotriphosphazenes (3 and 4) with cyclopropanemethylamine (5) and aniline (6) were performed in the presence of trimethylamine in THF. Five novel cyclopropanemethylamino- and anilino-substituted spiro-2,2' -dioxybiphenyl cyclotriphosphazene derivatives (7-11) were obtained from these reactions. The molecular structures of the new cyclotriphosphazene derivatives (7- 11) were characterized by elemental analysis, MALDI-TOF MS, FT-IR, and NMR ( $^{31}$P and $^{1}$H) spectroscopies. The structure of the spiro-(2,2' -dioxybiphenyl)-bis-(anilino)-cyclotriphosphazene (11) was also determined by single-crystal X-ray crystallography.
Pyrene-Bodipy-Substituted Novel Water-Soluble Cyclotriphosphazenes: Synthesis,Characterization, And Photophysical Properties, Seda Çeti̇ndere, Serkan Yeşi̇lot, Adem Kiliç
Pyrene-Bodipy-Substituted Novel Water-Soluble Cyclotriphosphazenes: Synthesis,Characterization, And Photophysical Properties, Seda Çeti̇ndere, Serkan Yeşi̇lot, Adem Kiliç
Turkish Journal of Chemistry
In the present work, pyrene-boron-dipyrromethene (BODIPY)-substituted novel water-soluble cyclotriphosphazene derivatives (6 and 7) were synthesized by click reactions between a cyclotriphosphazene derivative with a hydrophilic glycol side group (2) and BODIPYs (4 and 5). All of the new compounds (2, 6, and 7) were characterized by Fourier-transform infrared and nuclear magnetic resonance spectroscopy, as well as mass spectrometry and elemental analysis. The photophysical properties of the BODIPY-substituted cyclotriphosphazenes (6 and 7) were investigated by UV-Vis and fluorescence emission spectroscopy in water and water/solvent mixtures. It was found that the target compounds were soluble in water and could be potential candidates …
Synthesis Of New Cyclotriphosphazene Derivatives Bearing Schiff Bases And Theirthermal And Absorbance Properties, Semi̇h Doğan, Süreyya Oğuz Tümay, Ceylan Mutlu Balci, Serkan Yeşi̇lot, Serap Beşli̇
Synthesis Of New Cyclotriphosphazene Derivatives Bearing Schiff Bases And Theirthermal And Absorbance Properties, Semi̇h Doğan, Süreyya Oğuz Tümay, Ceylan Mutlu Balci, Serkan Yeşi̇lot, Serap Beşli̇
Turkish Journal of Chemistry
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 $^{1}$H, $^{13}$C, 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.
Chemosensor Properties Of 7-Hydroxycoumarin Substituted Cyclotriphosphazenes?, Gönül Yeni̇lmez Çi̇ftçi̇, Sergen Yilmaz, Nagi̇han Bayik, Eli̇f Şenkuytu, Esra Nur Kaya, Mahmut Durmuş, Mustafa Bulut
Chemosensor Properties Of 7-Hydroxycoumarin Substituted Cyclotriphosphazenes?, Gönül Yeni̇lmez Çi̇ftçi̇, Sergen Yilmaz, Nagi̇han Bayik, Eli̇f Şenkuytu, Esra Nur Kaya, Mahmut Durmuş, Mustafa Bulut
Turkish Journal of Chemistry
The newly synthesized cyclotriphosphazene cored coumarin chemosensors 5, 6, and 7 were successfully characterized by $^{1}$H NMR, $^{31}$P NMR, and MALDI-TOF mass spectrometry. Additionally, the photophysical and metal sensing properties of the targeted compounds were determined by fluorescence spectroscopy in the presence of various metals (Li$^{+}$, Na$^{+}$ , K$^{+}$ , Cs$^{+}$ , Mg2$^{+}$ , Ca2$^{+}$ , Ba2$^{+}$ , Cr3$^{+}$ , Mn2$^{+}$ , Fe3$^{+}$ , Co2$^{+}$ , Al3$^{+}$ , Hg$^{+}$ , Cu2$^{+}$ , Zn2$^{+}$ , Ag$^{+}$ , and Cd2$^{+}$) . The fluorescence titration results showed that compounds 5, 6, and 7 could be employed as fluorescent chemosensors for Fe3$^{+}$ ions with …
Synthesis, Optical, And Structural Properties Of Bisphenol-Bridgedaromatic Cyclic Phosphazenes, Bünyemi̇n Çoşut, Burcu Topaloğlu Aksoy, Süreyya Oğuz Tümay, Ahmet Şenocak, Serkan Yeşi̇lot
Synthesis, Optical, And Structural Properties Of Bisphenol-Bridgedaromatic Cyclic Phosphazenes, Bünyemi̇n Çoşut, Burcu Topaloğlu Aksoy, Süreyya Oğuz Tümay, Ahmet Şenocak, Serkan Yeşi̇lot
Turkish Journal of Chemistry
Phenoxy- and naphthoxy-substituted bisphenol-bridged cyclic phosphazenes were synthesized in 2 steps and their thermal, photophysical, and electrochemical properties were investigated. The structures of the cyclic phosphazene compounds were determined by ESI-MS mass spectrometry and $^{1}$H, $^{13}$C, and $^{31}$P NMR spectroscopies. The photophysical studies of phenoxy- and naphthoxy-substituted bridged cyclophosphazenes were investigated by means of absorption and fluorescence spectroscopies in different solvents. Thermal and electrochemical properties of the target compounds were also studied. Furthermore, the excimer emissions through intramolecular interactions in solution and in solid state were investigated by fluorescence spectroscopy and the theoretical calculations were performed in detail using DFT.
Novel Bodipy-Bridged Cyclotriphosphazenes, Hande Eserci̇, Ezel Öztürk, Eli̇f Okutan
Novel Bodipy-Bridged Cyclotriphosphazenes, Hande Eserci̇, Ezel Öztürk, Eli̇f Okutan
Turkish Journal of Chemistry
Three new 2-component unsubstituted (4P), diiodo- (5P), and dibromo- (6P) distyryl-BODIPY-bridged cyclotriphosphazene dimers were designed and synthesized. The newly synthesized BODIPY-cyclotriphosphazene systems were characterized by $^{1}$H, $^{13}$C, and $^{31}$P NMR spectroscopy. The photophysical properties of the distryl-BODIPYs (4-6) and BODIPY-cyclotriphosphazene dyads (4P-6P) were studied by UV-Vis absorption and fluorescence emission spectroscopy. In these derivatives, the bino-type cyclotriphosphazene derivative bearing unsubstituted BODIPY unit 4 P exhibited high fluorescence and no singlet oxygen generation due to the lack of spin converter. The attachment of heavy atoms (iodine and bromine) enabled the production of singlet oxygen. The bino-type BODIPY-cyclotriphosphazenes (5P and 6P) were …