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    CATHODOLUMINESCENCE RESPONSE FROM RARE EARTH DOPED Bi4Ge3O12
    (ELSEVIER SCIENCE BV, 2009) Kibar, R.; Cetin, A.; Tuncer, Y.; Uysal, S.; Townsend, P. D.; Canimoglu, A.; Can, N.; Boulon, G; Dujardin, C; Jurdyc, AM
    Room and low temperature cathodoluminescence (CL) of rare earth doped Bi4Ge3O12 (BGO) has been recorded. Luminescence signals noted in the wavelength range (300 - 800 nm) include intrinsic broad emission bands and signals related to Eu3+, Nd3+, and Tm3+. CL measurements made on Bi4Ge3O12 (BGO) doped with rare earth ions are reported for the temperature range 40 to 300 K with different CL excitation modulation frequencies. Dopant levels used in the present study are 1.1, 0.4, and 0.3 wt% Nd, 0.4 wt% Tm and 3 ppm Eu. All dopant levels exhibited different CL spectra with evidence for lines due to the rare-earth dopants intra-4f transitions. The temperature dependence of the intensity of the emission band is discussed.
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    Synthesis and characterization of some vic-dioxime and its mononuclear complexes
    (MAIK NAUKA/INTERPERIODICA/SPRINGER, 2007) Uysal, S.; Coskun, A.; Koc, Z. E.; Ucan, M.; Ucan, H. I.
    In this study, acetophenone is used as a basis substance. omega-Isonitrosoacetophenone has been synthesized from nitrosyl with amyl nitrite of acetophenone in the presence of sodium ethoxide. Subsequently, anti-phenylglyoxime has been prepared by reacting omega-isonitrosoacetophenone with hydroxylamine and sodium acetate in a ethanolic media. Chlorophenylglyoxime has been obtained from reaction with chlorine gases. Then, three aminophenylglyoxime (ligands) have been prepared by the reaction of chlorophenylglyoxime and the corresponding amines. The Ni(II), Co(II), and Cu(II) complexes with BF2+-bridge of anilinophenylglyoxime and 2,4-dimethylanilinophenylglyoxime were prepared. Then polymeric metal complexes with BF2+-bridge of dopamiophenylglyoxime were prepared. Their structures were identified by FT-IR, H-1 NMR, and ICP-AES spectral data, elemental analysis and magnetic measurements.
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    Synthesis and characterization of some vic-dioxime and its mononuclear complexes (vol 33, pg 351, 2007)
    (MAIK NAUKA/INTERPERIODICA/SPRINGER, 2007) Uysal, S.; Coskun, A.; Koc, Z. E.; Ucan, M.; Ucan, H. I.
    [Abstract Not Available]