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    Öğe
    Benzimidazol türevleri içeren metal komplekslerinin sentezi karakterizasyonu ve katalatik özelliklerinin incelenmesi
    (Çanakkale Onsekiz Mart Üniversitesi, 2013) Dilek, Deniz; Dayan, Osman
    Bu tezde 2-Aril-1H-benzimidazol (L1-3) ve 1-benzil-2-Aril-1H-benzimidazol (4-6) sentezlendi. Sentezlenen benzimidazol türevleri [RuCl2(p-simen)]2 ile tepkimeye sokularak heteroleptik aren-Ru(II) (K1-6) kompleksleri sentezlendi. Sentezlenen Ru(II) kompleksleri K1-6 asetofenon türevlerinin transfer hidrojenasyon reaksiyonlarında katalizör olarak kullanıldı. Sentezlenen tüm bileşiklerin karekterizasyonu 1H-NMR, 13C-NMR ve IR yöntemleri kullanılarak gerçekleştirildi. Sentezlenen komplekslerin katalitik aktivitelerinin iyi olduğu belirlendi. Anahtar sözcükler: Benzimidazol, Transfer hidrojenasyon, Katalitik aktivite,
  • Küçük Resim
    Öğe
    Oxidative synthesis of a novel polyphenol having pendant Schiff base group: Synthesis, characterization, non-isothermal decomposition kinetics
    (Elsevier, 2011) Dilek, Deniz; Doğan, Fatih; Bilici, Ali; Kaya, İsmet
    In here, the facile synthesis and thermal characterization of a novel polyphenol containing Schiff base pendant group, poly(4-{[(4-hydroxyphenyl)imino]methyl}benzene-1,2,3-triol) [PHPIMB], are reported. UV-vis, FT-IR,H-1 NMR, C-13 NMR, GPC, TG/DTG-DTA, CV (cyclic voltammetry) and solid state conductivity measurements were utilized to characterize the obtained monomer and polymer. The spectral analyses results showed that PHPIMB was composed of polyphenol main chains containing Schiff base pendant side groups. Thermal properties of the polymer were investigated by thermogravimetric analyses under a nitrogen atmosphere. Five methods were used to study the thermal decomposition of PHPIMB at different heating rate and the results obtained by using all the kinetic methods were compared with each other. The thermal decomposition of PHPIMB was found to be a simple process composed of three stages. These investigated methods were those of Flynn-Wall-Ozawa (FWO), Tang, Kissinger-Akahira-Sunose (KAS), Friedman and Kissinger methods. (C) 2011 Elsevier B.V. All rights reserved.