Author
Altuğ Mert Sevim
Other affiliations: Istanbul University, Autonomous University of Madrid
Bio: Altuğ Mert Sevim is an academic researcher from Istanbul Technical University. The author has contributed to research in topics: Phthalocyanine & Phthalonitrile. The author has an hindex of 13, co-authored 28 publications receiving 469 citations. Previous affiliations of Altuğ Mert Sevim include Istanbul University & Autonomous University of Madrid.
Papers
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TL;DR: In this article, Phthalocyanines with four or eight hexylthio-substituents on the periphery were prepared by cyclotramerization of 4-hexylthios-1,2-dicyanobenzene and 4,5-bis(hexylthsio)-1, 2-DICYBenzene.
72 citations
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TL;DR: In this article, the adsorption of octakis(2-trimethylammoniumethylsulfanyl)-porphyrazinatocobalt]-octaiodide from aqueous solution onto negatively charged sepiolite is investigated.
68 citations
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TL;DR: In this paper, metal-free and metallo-phthalocyanines (2a-d ) bearing four thioglycolic acid groups on the periphery were prepared by cyclotetramerization of a new precursor, namely 4-(carboxymethylsulfanyl)phthalonitrile (1 ) in the presence of the corresponding divalent metal salts (Zn(II), Co( II), Ni(II, Cu(II)).
46 citations
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TL;DR: In this article, the photocatalytic activity of polycrystalline TiO2 samples impregnated with carboxy functionalized Co(II) or Zn(II)-phthalocyanine as heteregoneous photocatalyst has been investigated.
Abstract: In order to realize the photocatalytic reactions by visible light more efficiently, the photocatalytic activity of polycrystalline TiO2 samples impregnated with carboxy functionalized Co(II) or Zn(II)-phthalocyanine as heteregoneous photocatalyst has been investigated. For this purpose, metallophthalocyanines(MPc) substituted with mercapto benzoic acid groups on each benzo moiety were incorporated into TiO2 semiconductors to prepare TiO2–MPc composites as heterogeneous catalysts. TiO2 and TiO2–MPc composites were characterized by making use of X-ray diffraction (XRD), infrared spectroscopy (FTIR) and UV–vis diffuse reflectance spectroscopy. The characterization results show that MPcs are anchored on the surface of TiO2 through CO–O–TiO2 bonds. The optimum loading of the dyes on TiO2 were 0.49 μmol/g TiO2 for ZnPc and 0.56 μmol/g TiO2 for CoPc, nearly independent of TiO2 used. These novel heterogeneous photocatalysts were used for the degradation of 4-chlorophenol (4-CP) in aqueous media in the presence of visible irradiation monitored by GC–MS spectroscopy. The catalysts revealed enhanced activity in visible region for the degradation of 4-CP when compared with that of pure TiO2, which is attributed to the cooperative function of the two components of the photocatalyst. The amount of remaining 4-chlorophenol residue was determined by using an internal standard (phenol) with gas chromatography–mass spectrometry and during the first 30 minutes 99% degradation of 4-chlorophenol was observed.
44 citations
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TL;DR: In this article, the tetra peripheral 3,5-bis (trifluoromethyl)phenylethynyl substituted metallophthalocyanines (MPc) have been synthesized and their aggregative properties were investigated in different concentrations.
40 citations
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TL;DR: This review will summarize the achievements made in cross-coupling area since 2001 and identify the new organometallic species generated from migratory insertion that may undergo various transformations.
Abstract: Transition-metal-catalyzed cross-coupling reactions have been well-established as indispensable tools in modern organic synthesis. One of the major research goals in cross-coupling area is expanding the scope of the coupling partners. In the past decade, diazo compounds (or their precursors N-tosylhydrazones) have emerged as nucleophilic cross-coupling partners in C–C single bond or C═C double bond formations in transition-metal-catalyzed reactions. This type of coupling reaction involves the following general steps. First, the organometallic species is generated by various processes, including oxidative addition, transmetalation, cyclization, C–C bond cleavage, and C–H bond activation. Subsequently, the organometallic species reacts with the diazo substrate to generate metal carbene intermediate, which undergoes rapid migratory insertion to form a C–C bond. The new organometallic species generated from migratory insertion may undergo various transformations. This type of carbene-based coupling has proven...
766 citations
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TL;DR: In this paper, the use of phthalocyanines as photosensitizers for dye-sensitized solar cells (DSSCs) is discussed, and several synthetic strategies have been developed for engineered dyes based on the Pc scaffold, due to the synthetic versatility and robustness of these macrocycles.
238 citations
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TL;DR: In this article, the adsorption behavior of Congo red (CR) from aqueous solution onto the as-prepared polyhedral cuprous oxide nanoparticles (Cu2O NPs) was systematically investigated.
176 citations
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TL;DR: The thermodynamic parameters derived from the fitting procedure point out the strong electrostatic interaction with organic cations adsorbed within the interlayer space in the organoclays for the adsorption of diclofenac.
129 citations
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TL;DR: In this paper, the use of iron-based waterworks sludge as an adsorbent for the removal of cationic (Basic Violet 16), anionic (Direct Blue 71, Acid Blue 40, and Reactive Blue 29) and non-ionic (Disperse Brown 19) was investigated.
118 citations