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    The effect of organic solvents on the optical and morphological properties of metallophthalocyanines containing 3,5-bis(2?,3?,4?,5?,6?-pentafluorobenzyloxy) benzyloxy groups
    (World Sci Publ Co Inc, 2019) Ozcesmeci, Mukaddes; Sorar, Idris; Hamuryudan, Esin
    Thin films of metal phthalocyanines (M: Co, Zn, Ni) substituted with four 3,5-bis(2',3',4',5',6'-pentafluorobenzyloxy)benzyloxy groups have been prepared by the spin-coating technique. Optical properties and surface morphology of the thin films of metallophthalocyanines have been investigated as a function of organic solvents of acetone, chloroform, tetrahydrofuran, dimethylfonnamide and dimethylsulfoxide. Results show that optical properties and surface morphology of the prepared films depend on the type of organic solvent used.
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    Synthesis, characterization, and optical studies of pentoxy-substituted tetrakis(pentafluorobenzyloxy)phthalocyanines
    (Taylor & Francis Ltd, 2018) Ozcesmeci, Mukaddes; Sorar, Idris; Ozcesmeci, Ibrahim; Hamuryudan, Esin
    The synthesis and characterization of peripherally 2,3,5,6-tetrafluoro-4-pentoxy-benzyloxy-substituted metal-free and metallo (Zn(II) and Co(II)) phthalocyanines are described in this study. Aggregation properties of these phthalocyanines were studied in the concentration range of 1x10(-5)-1x10(-6)M in tetrahydrofuran. Thin films of phthalocyanines were prepared by spin-coating technique. The spectrophotometric measurements of transmittance spectra were carried out in the wavelength range of 200-1000nm. Optical band gaps of phthalocyanine thin films were also calculated. Surface morphologies and thickness of the films were examined by Scanning Electron Microscopy. Results show that film thickness can be changed significantly depending on the type of metal in the phthalocyanine.
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    Synthesis, optical and structural studies of tetrakis[4-(2?,3?,4?,5?,6?-pentafluorobenzyloxy)benzyloxy]-substituted metallo-phthalocyanines
    (Elsevier Science Sa, 2012) Ozcesmeci, Mukaddes; Sorar, Idris; Hamuryudan, Esin
    Metallo-phthalocyanines substituted with four pentafluorobenzyloxy units through benzyloxy-bridges were synthesized from a new phthalonitrile derivative and characterized by spectroscopic methods. The aggregation behaviour of these compounds were investigated in different concentrations of tetrahydrofuran. The effect of solvents on absorption spectra were studied in various organic solvents. Thin films of metallo-phthalocyanines were obtained by using spin coating on 2947 Corning glass substrates. Optical transmittance of thin films was measured using a spectrophotometer in the wavelength range of 300-1000 nm. Results showed that transmittance decreases with the increasing concentration in the ranges corresponding to B and Q absorptions, but the films can still be proposed as optical windows between these regions (similar to 400-600 nm) due to very low absorbances. The surface morphology of the thin films were investigated by atomic force microscopy. The phthalocyanine molecules grow in stacks of rows rather in the zig-zag or parallel. (C) 2011 Elsevier B.V. All rights reserved.
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    Thin films of fluorinated groups substituted metallophthalocyanines as an optical material
    (Elsevier Science Bv, 2017) Ozcesmeci, Mukaddes; Ozcesmeci, Ibrahim; Sorar, Idris; Hamuryudan, Esin
    In this study, we report the synthesis and characterization of palladium(II)phthalociyanine including fluoro-4'-hexylthio-benzyloxy groups for the first time. The optical properties of a series of pentafluorobenzyloxy and tetrafluoro-4'-hexylthio-benzyloxy metallo-phthalocyanines were studied. Thin films of these compounds were obtained by using spin coating technique. Optical transmittance of thin films was measured using a spectrophotometer in the wavelength range of 200-1000 nm. Optical band gaps of thin films were also calculated. In addition, surface morphologies and thickness of the films were investigated by Scanning Electron Microscopy. Results showed that the transmittance, band gap and morphology of the films are highly dependent on the metals and substituted groups of the phthalocyanines. (C) 2017 Elsevier B.V. All rights reserved.