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    Oligo-2-[(4-iyodofenil)iminometil]fenol'ün sentezi ve fiziksel özelliklerinin incelenmesi
    (Çanakkale Onsekiz Mart Üniversitesi, 2005) Moral, Fatma; Özdemir, Eyüp
    öz 2-[(4-iyodofenil)iminometil] Fenol' ün oksidatif polikondenzasyon reaksiyon şartlan incelendi. 2-[(4-iyodofenil)iminometil] Fenol' ün oksidatif polikondenzasyonunda NaOCİ ve hava oksijeni kullanıldı. Elde edilen ürünlerin yapı ve özellikleri FT-IR, UV-Vis, 'H-NMR, DTA-TGA, SEC analizleri ile karakterize edildi. Anahtar Kelimeler: 01igo-2-[(4-iyodofenil)iminometil] Fenol, oksidatif polikondenzasyon, Schiff bazı.
  • Küçük Resim
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    Synthesis, characterization and thermal degradation of oligo-2-[(4- iodophenylimino)methyl|phenol and ol1gomer-metal complexes
    (2009) Kaya, İsmet; Moral, Fatma; Özdemir, Eyüp
    The conditions for oxidative condensation of 2-[(4-iodophenylimino)methyl] pheno| (1P1MP) were studied with air and NaOCI as oxidants in an aqueous alkaline medium between 50 and 90°C. Size exclusion chromatography (SEC) showed that the number-average molecular weight (Mn), weight-average molecular weight (Mw) and polydispersity index (PDI) values, respectively, were 1250, 1300 g mol-1 and 1.040 for oxidation with NaOCI and 2200, 2500 g mol-1 and 1.136 for oxidation by air. With the optimum reaction conditions, the yield of OIPIMP was found to be 67 % with NaOCI, and 29 % with air, as oxidant. The OIPIMP was characterized by 1H-NMR, 13C-NMR, FT-1R, UV-Vis and elemental analysis. Metal complexes of the oligomerwere shown to be more thermally stable than OIPIMP itself. © 2009 Chemical Society of Ethiopia.
  • [ X ]
    Öğe
    SYNTHESIS, CHARACTERIZATION AND THERMAL DEGRADATION OF OLIGO-2-[(4-IODOPHENYLIMINO)METHYL]PHENOL AND OLIGOMER-METAL COMPLEXES
    (Chem Soc Ethiopia, 2009) Kaya, İsmet; Moral, Fatma; Ozdemir, Eyuep
    The conditions for oxidative condensation of 2-[(4-iodophenylimino)methyl]phenol (IPIMP) were studied with air and NaOCI as oxidants in an aqueous alkaline medium between 50 and 90 degrees C. Size exclusion chromatography (SEC) showed that the number-average molecular weight (M(n)), weight-average molecular weight (M(w)) and polydispersity index (PDI) values, respectively, were 1250, 1300 g mol(-1) and 1.040 for oxidation with NaOCI and 2200, 2500 g mol(-1) and 1.136 for oxidation by air. With the optimum reaction conditions, the yield of OIPIMP was found to be 67 % with NaOCI, and 29 % with air, as oxidant. The OIPIMP was characterized by (1)H-NMR, (13)C-NMR, FT-IR, UV-Vis and elemental analysis. Metal complexes of the oligomer were shown to be more thermally stable than OIPIMP itself.
  • Küçük Resim
    Öğe
    Synthesis, characterization, and optimum reaction conditions of oligo-2-[(pyridine-2-yl-methylene) amino] phenol
    (John Wiley & Sons Inc, 2004) Kaya, İsmet; Moral, Fatma; Erdener, Diğdem
    The reaction conditions of the oxidative polycondensation of 2-[(pyridine2-yl-methylene) amino] phenol (2-PMAP) with air O-2, H2O2, and NaOCl were studied in an aqueous alkaline medium between 60 and 90 degreesC. Oligo-2-[(pyridine-2-yl-methylene) amino] phenol (O-2-PMAP) was characterized with H-1 NMR, Fourier transform infrared, ultraviolet-visible, size exclusion chromatography (SEC), and elemental analysis techniques. Moreover, solubility testing of the oligomer was performed in polar and nonpolar organic solvents. With the NaOCl, H2O2, and air O-2 oxidants, the conversions of 2-PMAP into O-2-PMAP were 98, 87, and 62%, respectively, in an aqueous alkaline medium. According to SEC, the number-average molecular weight, weight-average molecular weight, and polydispersity index of O-2-PMAP were 2262 g mol(-1), 2809 g mol(-1), and 1.24 with NaOCl, 3045 g mol(-1), 3861 g mol(-1), and 1.27 with air O-2, and 1427 g mol(-1), 1648 g mol(-1), and 1.16 with air H2O2, respectively. Also, thermogravimetric analysis showed that O-2-PMAP was stable against thermooxidative decomposition. The weight loss of O-2-PMAP was 96.68% at 900 degreesC. (C) 2004 Wiley Periodicals, Inc.