Browsing by Author "Sonmez, M."

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Electrical Characteristics of Organic/Inorganic Pt(Ii) Complex/P-si Semiconductor Contacts
(Elsevier Sci Ltd, 2014) Imer, A. Gencer; Temirci, C.; Gulcan, M.; Sonmez, M.
We produced Pt(II)) complexes using the bidentate ligand N-aminopyrimidine-2-thione (APTH). The optical transmission of thin Pt-APTH films was measured. The optical bandgap of the material was 2.58 eV. With the expectation that it might have semiconductor properties and that the Pt-APTH complex might exhibit rectifier behavior when brought into appropriate contact with a semiconductor, we fabricated Pt-APTH/p-Si contacts by direct addition of a solution of Pt-APTH to the front side of p-Si wafers. Forward bias current-voltage measurements revealed satisfactory rectifying behavior for the Pt-APTH/p-Si contacts, with a mean rectification ratio of 4.40 x 10(2) and a mean barrier height of 0.765 eV. Cheung and Norde functions were used to obtain and verify some electrical characteristics of the contacts. The results obtained from both methods are compared and discussed. (C) 2014 Elsevier Ltd. All rights reserved.
Synthesis and Spectral Studies of Pyranone Derivative and Its Cu(Ii), Co(Ii), Ni(Ii) and Zn(Ii) Complexes
(Maik Nauka/interperiodica/springer, 2008) Akbas, E.; Sonmez, M.; Anil, B.; Aslanoglu, F.
Under the thermolysis condition, 5-phenyl-2,3-dihydro-2,3-furandione (IV) in inert aprotic solvents as p-xylene at 130-140 degrees C yields 3-benzoyl-4-hydroxy-6-plienyl-2H-pyran-2-one (VI) via phenyl ketene (V). The compound (VI) was converted into the corresponding 3-benzoyl-4-hydroxy-6-plienylpyridin-2(1H)one (VII), and 3-benzoyl-2-oxo-6-phenyl-2H-pyran-4-yl acetate (VIII), by its reactions with ammonium hydroxydc, and acetic anhydride, respectively. On the other hand, a series of new various metal complexes (IX-XIa, XIb) of VI was synthesizec.. The results suggest that the compound VI as bidentate ligand indicate a binuclear structure for the Cu(II) complex with square-planar geometry. The Ni(II) and Zn(II) complexes are of tetrahedral and the Co(II) complex. is also octahedral geometry with water molecules at the axial positions. The structures of compounds and complexes were characterized on the basis of elemental analysis, Mass, IR, H-1, and C-13 NMR spectra.