14 research outputs found
2-Naphthylthio Cyclotriphosphazene Derivatives: Synthesis, Characterization, Crystallographic and Fluorescence Properties
No full textESIPT Aktif Ve İnaktif Sistemleri İçeren Yeni Tip Siklotrifosfazen Temelli Moleküllerin Dizaynı Ve Fotofiziksel Özelliklerinin İncelenmesi
No full textDesigning inorganic–organic hybrid molecules based on carbazole/indole-appended cyclotriphosphazenes and the investigation of their photophysical properties
No full textThe preparation of new fluorescent cyclotriphosphazene compounds and examination of the effect of the substituent on the photophysical properties of the new compounds formed in terms of the number and variety of substituents are attempted in this work. Therefore, cyclotriphosphazene derivatives bearing carbazole and indole moieties (2-9) were synthesized via the nucleophilic substitution reactions of cyclotriphosphazene (1) with N-(2-hydroxyethyl)carbazole (I) and 1-(2-hydroxylethyl)-2-methyl-1H-indole (II) and those of tris nongeminal cyclotriphosphazene derivatives (3a,b and 5a,b) with I and II. The full characterization data of compounds 2-9 were obtained by utilizing mass spectrometry and spectroscopic techniques. The crystal structures of II and 3a were elucidated using the single crystal X-ray diffraction method. The photophysical aspects of the targeted compounds (7a, 8 and 9) were investigated by UV/Vis and fluorescence spectroscopies using different organic solvents, and the results for the targeted compounds were compared within themselves, together with their precursors (I and II). It was seen that compound 7a, which includes both an ethoxycarbazole and an ethoxymethylindole group, has improved photophysical properties when compared with the fully ethoxycarbazole (8) and fully ethoxymethylindole (9) substituted cyclotriphosphazene derivatives
Correction to:Investigating recurrence in pilonidal sinus disease: results of a nationwide, multicenter study in Turkey (PISI TURKEY) (International Journal of Colorectal Disease, (2025), 40, 1, (194), 10.1007/s00384-025-04921-x)
No full textThe collaborative Author names are missing in the published proof. The Supplementary material is updated with 2 additional names in the collaborative Author’s list. Ali Yalcinkaya, Ahmet Yalcinkaya, Sezai Leventoglu, Bengi Balci, Alp Ozgun Borcek, Elif Ozeller, Ece Ozturk, Gulsum Sueda Kayacan, Berkay Enes Karaca, Ahmet Faruk Oyanik, Omer Faruk Gul, Basak Bolukbasi, Huseyin Gobut, Cagri Buyukkasap, Aydin Yavuz, Dara Aydin, Zeynep Akdagcik, Alina Pataeva, Douigou Hasan, Omar Hussein, Arda Ozgur Ozturk, Cem Arda Elumar, Ali Derman Dere, Asra Zeynep Balci, Rasim Ozturk, Yasar Copelci, Murat Kartal, Serkan Tayar, Mustafa Yeni, Tolga Kalayci, Ramazan Yavuz, Bulent Calik, Semra Demirli Atici, Selen Ozturk, Gizem Kilinc, Korhan Tuncer, Cengiz Aydin, Mustafa Yener Uzunoglu, Alp Yildiz, Aybala Yildiz, Can Sahin, Mehmet Caglikulekci, Elbrus Zarbaliyev, Murat Sevmis, Baris Sevinc, Nurullah Damburaci, Omer Karahan, Ozgen Isik, Said Kural, Xhenet Hysejni, Ahmet Aktas, Baris Yildiz, Gultekin Ozan Kucuk, Ahmet Can Sari, Mert Candan, Mehmet Mahir Ozmen, Cem Emir Guldogan, Emre Gundogdu, Munevver Moran, Mevlut Recep Pekcici, Saygin Altiner, Enes Cebeci, Tugba Yigit, Bedri Burak Sucu, Mert Col, Omer Faruk, Ozkan Hanife, Seyda Ulgur, Murat Kalin, Emre Furkan Kirkan, Abdullah Yildiz, Sema Yukseksag, Cagri Buyukkasap, Erdinc Kamer, Mesut Ozogul, Nihan Acar, Melek Gokova Bekler, Arif Atay, Halis Bag, Server Sezgin Uludag, Ahmet Necati Sanli, Sefa Ergun, Ergin Erginoz, Veysi Basbayandur, Mehmet Faik Ozcelik, Ahmet Askar, Yuksel Altinel, Adnan Hacim, Serhat Meric, Merve Tokocin, Talar Aktokmakyan, Yunus Aktimur, Kamil Ozdogan, Fikret Calikoglu, Tugba Koc Calikoglu, Ahmet Barcin, Ahmed Salhat, Guray Durmaz, Volkan Ozben, Erman Aytac, Zumrud Aliyeva, Arda Ulas Mutlu, Mert Tanal, Mustafa Fevzi Celayir, Aydin Eray, Tufan Ali Yuksel, Elif Baran, Banu Yigit, Erhan Eroz, Aykhan Abbasov, Hakan Yanar, Huseyin Onur Aydin, Murathan Erkent, Tugan Tezcaner, Tevfik Avci, Murat Kus, Mehmet Abdussamet Bozkurt, Adem Ozcan, Nezihe Berrin Dodur Onalan, Serhan Yilmaz, Yasin Kara, Ali Kocatas, Fatih Yanar, Ali Fuat Kaan Gok, Irem Karatas, Berke Sengun, Ilknur Erenler Bayraktar, Onur Bayraktar, Zulal Emsal, Irem Dalkilic, Cengiz Dibekoglu, Sami Acar, Erman Ciftci, Yunus Yapalak, Cihad Tatar, Mert Mahsuni Sevinc, Ali Emre Nayci, Egemen Saygili, Yavuz Selim Komek, Bayram Kaymak, Fatih Altintoprak, Emrah Akin, Necattin Firat, Emre Gonullu, Ugur Can Dulger, Atilla Kurt, Sinan Soylu, Musa Serin, Omer Topcu, Ali Cihat Yildirim, Mehmet Fatih Ekici, Sezgin Zeren, Ismail Ahmet Bilgin, Tayfun Karahasanoglu, Ismail Hamzaoglu, Afag Aghayeva, Bilgi Baca, Inci Sahin, Osman Bozbiyik, Mustafa Ozgur Kilincarslan, Mustafa Ali Korkut, Erhan Akgun, Cemil Caliskan, Tayfun Yoldas, Timucin Erol, Hilmi Anil Dincer, Omer Cennet, Muhammed Salih Suer, Muhammet Bunyamin Dalkilic, Ibrahim Alkan, Busenur Kirimtay, Emre Balik, Emre Ozoran, Ibrahim Halil Ozata, Derya Salim Uymaz, Tutku Tufekci, Salih Nafiz Karahan, Orhan Agcaoglu, Naciye Cigdem Arslan, Mehmet Yilmaz, Orhan Ureyen, Can Murat Kale, Enver Ilhan, Eray Kara, Semra Tutcu Sahin, Onur Haspolat, Alperen Dalkiran, Ergun Yuksel, Mehmet Kocaoglu, Omer Tasan, Cevdet Tokat, Cihan Ozen, Alptug Mertcan Koc The Original article has been corrected.</p
Synthesis of new cyclotriphosphazene derivatives bearing Schiff bases and their thermal and absorbance properties
No full textIn 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 H-1, C-13, and P-31 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
New design of cyclotriphosphazene derivatives bearing carbazole units: The syntheses, characterization, and photophysical properties
No full textIn the current work, di- and tetra- aniline substituted cyclotriphosphazene derivatives (1a-b) were prepared from commercially available cyclotriphosphazene and underwent nucleophilic substitution reaction with 9-ethyl-9Hcarbazol-3-ol (2) to produce three new cyclotriphosphazene compounds having two- (3a), three- (4b) and fourcarbazole units (5b), respectively. The full characterization data of the targeted compounds were obtained by utilizing elemental analysis, mass spectrometry, H-1, and P-31 NMR spectroscopies. The structure of compound 3a was further supported by single crystal X-Ray diffraction technique. As the photophysical aspect of the synthesized compounds 3a, 4b and 5b, UV- Vis and steady-state fluorescence spectroscopies were used in different organic solvents. In addition, time-resolved fluorescence and 3D-fluorescence spectroscopies were applied to get deeper information about the photophysical properties of targeted compounds
Unexpected Ring Expansion of a Four-Membered Cyclophosphazane
No full textNucleophilic substitution reactions of the N(R),N(R)-spiro-bridged octachlorobis(cyclotriphosphazene), N3P3Cl4[N(CH2)(5)CH3](2)N3P3Cl4 (1), with sodium salts of alcohols (1,3-propanediol, 2,2,3,3,4,4-hexafluoro-1,5-pentanediol, and phenol) give ansa products (2-4) via an unexpected rearrangement. These products were characterized by elemental analysis, mass spectrometry, and H-1 and P-31 NMR spectroscopy. The molecular structures of compounds 3 and 4 were also established by X-ray crystallography. This new class of phosphazene structures consists of three fused P3N3 rings that arise from expansion of the four-membered phosphazane ring in 1 to a six-membered N3P3 ring during alcoholysis reactions
Novel chloro-substituted thiophene thiosemicarbazone: Synthesis, crystal structures, DFT analysis and antimicrobial evaluation of its Co(II), Zn(II), Ni (II), and Pd(II) complexes
No full textThiosemicarbazones, obtained through the condensation of hydrazine derivatives with carbonyl compounds, constitute an important class of Schiff bases with broad pharmacological potential. In this work, a chloro-substituted thiophene-derived thiosemicarbazone ligand was synthesized from 4-methyl-3-thiosemicarbazide, and its coordination complexes with cobalt(II), zinc(II), palladium(II), and nickel(II) ions were prepared. The synthesized compounds were characterized comprehensively using Fourier Transform Infrared Spectroscopy, Ultraviolet-Visible Spectroscopy, proton Nuclear Magnetic Resonance, mass spectrometry, elemental analysis, molar conductivity, and single-crystal X-ray diffraction. Structural and electronic features were further investigated through density functional theory calculations, which provided insights into orbital distributions, energy gaps, and optimized geometries. Antimicrobial screening demonstrated that the ligand and its metal complexes exhibited significant inhibitory effects against selected bacterial and fungal strains, with enhanced activity observed for the complexes compared to the free ligand. The combined experimental and computational findings highlight the importance of halogen substitution and transition-metal coordination in tuning the biological and electronic properties of thiosemicarbazone derivatives, supporting their potential as promising candidates for future therapeutic development
The investigation of thermosensitive properties of phosphazene derivatives bearing amino acid ester groups
No full textIn this study, a series of phosphazene derivatives having amino acid esters were synthesized from the reactions of amino acid esters with cyclophosphazenes. Hexachlorocyclotriphosphazene, (N3P3Cl16) and octachlorocyclotetraphosphazene (N4P4Cl8) have been reacted with carboxylic amino acid esters; glycine ethyl ester hydrochloride, glycine methyl ester hydrochloride, beta-alanine ethyl ester hydrochloride, B-alanine methyl ester hydrochloride and methyl 6-aminohexanoate hydrochloride to obtain cyclophosphazene compounds containing amino acid esters as side groups. All obtained compounds (1-9) were characterized using spectroscopic methods and elemental analysis. The molecular structures of compounds 2, 5 and 6 were also characterized by X-ray crystallographic studies. Hydrolytic degradations of compounds (1-9) were observed by P-31 NMR spectroscopy under acidic condition (pH = 1-3) and at body temperature (35-38 degrees C). Concentration-dependent lower critical solution temperatures (LCST) of compounds were examined to determine their thermosensitive behaviors in aqueous solution. It is found that all compounds degraded to harmless products such as amino acid, phosphates, ammonium salts. LCSTs of compounds 1, 2 and 6 were found to be around body temperature that is important for biomedical applications. (C) 2017 Elsevier B.V. All rights reserved
New cyclotriphosphazenes with butylated oxyanisole motif; synthesis, characterization and biological properties
No full text<p>In the present work, new cyclotriphosphazene derivatives containing butylated oxyanisole (BA) group (3, 4a/b, 6a/b, 7, 11a/b and 12) were synthesized and characterized with using elemental analysis, mass, and NMR (1H and 31P) spectroscopic techniques in detailed. The molecular and crystal structure of compound 3 was also determined by single-crystal X-ray crystallography. The antimicrobial activities of the compounds (3, 7 and 12) were evaluated against strains of Staphylococcus aureus ATCC 29213 as Gram positive cocci, Bacillus cereus DSMZ 4312 as Gram positive bacilli, Escherichia coli ATCC 8739 as Gram negative bacilli, and Candida albicans ATCC 10231, a dimorphic yeast species representing fungi as well as antioxidant activities of these compounds. In the biological and antioxidant activity tests carried out, compound 3 stood out with both antibacterial and antioxidant activity compared to other compounds.</p>
