Yazar "Obali, Aslihan Yilmaz." seçeneğine göre listele

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  • Küçük Resim
    Öğe
    Design of phenanthrimidazole-pendant cyclam and cyclen macrocyclic complex ligands as inorganic hosts: Photophysics, electrochemistry, and bimetallic complex formation
    (WILEY, 2020) Obali, Aslihan Yilmaz.
    Novel ruthenium(II)bpy complexes of the phenanthrimidazole-pendant cyclen and cyclam macrocyclic ligands were synthesized as inorganic host molecules. Inorganic host design was planned as a "complex ligand" form because of its tetraaza macrocyclic unit, which has the ability to coordinate to the metals. Photophysical properties and metal selectivity of inorganic hosts RuL1A and RuL2 complex ligands were investigated by UV-vis and fluorescence spectroscopy in aqueous medium. Among Ag(I), Li(I), Na(I), K(I), Cd(II), Cr(II), Fe(II), Hg(II), Ni(II), Pb(II), Zn(II), Cu(II), Mn(III), and Co(III) metal ions, Fe(II) addition causes spectral changes for both RuL1A and RuL2 complex ligands. Electrochemical studies were performed for RuL1B and also for cis-[Ru(bpy)(2)Cl-2]. Bimetallic complexes [[Ru(bpy)(2)([Ni(2-(4-((1,4,8,11-tetraazacyclotetradecan-1-yl)methyl)phenyl)-1H-imidazo[4,5-f][1,10]phenanthroline])](ClO4)(4), RuL1-NiA and [Ru(bpy)(2)([Ni(2-(4-((1,4,8,11-tetraazacyclotetradecan-1-yl)methyl)phenyl)-1H-imidazo[4,5-f][1,10]phenanthroline])]Cl-4, RuL1-NiB solid complexes were also obtained by the reaction of the RuL1B and Nickel(II).
  • Küçük Resim
    Öğe
    Phenanthrimidazole-derivated magnetic silica nanoparticles: Syntheses, investigations of morphology and magnetic properties
    (SPRINGER, 2019) Obali, Aslihan Yilmaz.; Al-Obaidi, Ali Hussein Mustafa.; Ucan, Halil Ismet.
    Novel phenanthrimidazole-derivated magnetic nanoparticles were synthesized originally. The chemical compositions of the hydroxy-, chloro-, carboxy-ended phenanthrimidazole derivatives were proved by FT-IR and H-1-NMR spectroscopy and the pipe-like morphology was evaluated by SEM. The chemical compositions, morphologies and magnetic measurements of the magnetic nanoparticles were evaluated by FT-IR spectroscopy, TGA/DSC, XRD, TEM and VSM. The resulting products are spherical and aggregated by the magnetism of iron oxide, but dispersed individually in ethanol/water mixture.