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    Synthesis, characterization, electrochemical behaviors and applications in the Suzuki-Miyaura cross-coupling reactions of N2S2O2 thio Schiff base ligand and its Cu(II), Co(III), Ni(II), Pd(II) complexes and their usage in the fabrication of organic-inorganic hybrid devices
    (Elsevier Science Sa, 2012) Temel, Hamdi; Pasa, Salih; Ocak, Yusuf Selim; Yilmaz, Ismail; Demir, Serpil; Ozdemir, Ismail
    The thio Schiff base ligand N,N'-bis(o-hydroxy-1-naphtaldehydene)-1,2-bis(o-amino phenilthio)ethane (L) was synthesized by the condensation of o-hydroxy-1-naphthaldehyde and 1,2-bis(2-amino thiophenol)ethane. The reactions of the ligand with different transition metal(II) salts under reflux system condition afforded a series of metal complexes such as Cu(II), Co(III), Ni(II) and Pd(II). Ligand and its complexes were characterized by a combination of elemental analysis, UV-vis spectroscopy, FT-IR, H-1 NMR, MS and TGA/DTA. The electrochemical properties of L and [Cu(L)] were investigated using cyclic voltammetry (CV) in the solutions of dimethyl sulfoxide (DMSO). The catalytic property of thio Schiff base ligand with Suzuki cross-coupling reactions were also determined with different substituted aryl halides in the presence of aryl boronic acid and Pd(AcO)(2) as catalyst. In addition, the fabrication of organic-inorganic hybrid devices using L and its Co(III), Ni(II) and Pd(II) complexes and their electrical properties have been reported. (C) 2011 Elsevier B.V. All rights reserved.
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    Transfer hydrogenation of ketones catalyzed by new rhodium and iridium complexes of aminophosphine containing cyclohexyl moiety and photosensing behaviors of rhodium and iridium based devices
    (Elsevier Science Sa, 2014) Rafikova, Khadichakhan; Kystaubayeva, Nurzhamal; Aydemir, Murat; Kayan, Cezmi; Ocak, Yusuf Selim; Temel, Hamdi; Zazybin, Alexey
    The reaction of [Rh(mu-Cl)(cod)](2) and Ir(eta(5)-C5Me5)(mu-Cl)Cl](2) with aminophosphine ligands Cy2PNHCH2-C4H3X (X: O; S) gave a range of new monodendate [Rh(Cy(2)PNHCH(2)eC(4)H(3)O)(cod) Cl], (1), [Rh(Cy(2)PNHCH(2)eC(4)H3S)(cod) Cl], (2), [Ir(Cy2PNHCH2-C4H3O)(h(5)-C5Me5)Cl-2], (3) and [Ir(Cy2PNHCH2 -C4H3S)(eta(5)-C5Me5)Cl-2], (4) complexes, which were characterized by analytical and spectroscopic methods. The new rhodium(I) and iridium(III) catalysts were applied to transfer hydrogenation of acetophenone derivatives using 2-propanol as a hydrogen source. The results showed that the corresponding alcohols could be obtained with high activity (up to 99%) under mild conditions. Notably, [Rh(Cy2PNHCH2-C4H3O)(cod)Cl] complex (1) is much more active than the other analogous complexes in the transfer hydrogenation. Moreover, organiceinorganic rectifying contacts were fabricated forming rhodium(I) and iridium(III) complex thin films on n-Si semiconductors and evaporating Au metal on the structures. Electrical properties of the contacts including ideality factor, barrier height and series resistance were determined using their currentevoltage (IeV) data. The photoelectrical characteristics of the devices were examined under the light with 40-100 mW/cm(2) illumination conditions. It was seen that light had strong effects on IeV characteristics of the devices and the ones fabricated using 3 and 4 complexes had unusually forward and reverse bias photoconducting behavior. (C) 2014 Elsevier B.V. All rights reserved.