Kurum Yazarı "Türk, Hayrettin" Makale Koleksiyonu İçin Listeleme
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Biomimetic catalysis of an organophosphate by molecularly surface imprinted polymers
Say, Rıdvan; Erdem, M; Ersöz, Arzu; Türk, Hayrettin; Denizli, Adil (Elsevier Science BV, 2005)A synthetic polymer selective for paraoxon was prepared by a molecular surface imprinting technique. We have combined molecular imprinting with the ability of histidine to chelate metal ions to create active centrum of ... -
Biomimicking, metal-chelating and surface-imprinted polymers for the degradation of pesticides
Erdem, Murat; Say, Rıdvan; Ersöz, Arzu; Denizli, Adil; Türk, Hayrettin (Elsevier Science BV, 2010)Molecularly imprinted polymer beads (PlBs) and non-imprinted (control) polymer beads (NIBs) have been prepared from methacryloylhistidine-Co2+, -Ni2+, and -Zn2+ monomers and applied as catalyst in the hydrolysis of paraoxon ... -
Biosorption of Cadmium Ions from Aqueous Solution Onto Non-living Lichen Ramalina fraxinea Biomass
Tay, Turgay; Candan, Mehmet; Erdem, Murat; Çimen, Yasemin; Türk, Hayrettin (Wiley-V C H Verlag GMBH, 2009)Living lichens are known to accumulate metals across their surface. in this study, the biosorption of cadmium ions (Cd(2+)) by the lichen Ramalina fraxinea was investigated in aqueous solution in a batch system with respect ... -
Catalysis of autoxidation of 2,6-di-tert-butylphenol in water by metallophthalocyanine tetrasulfonates bound to polyelectrolyte supports
Kopkallı-Yavuz, Handan; Türk, Hayrettin (Scientific Technical Research Council Turkey, 1996)2,6-and 2,10-Ionenes and soluble poly(vinylbenzyl)trimethylammonium chloride polyelectrolytes were synthesized and used as catalyst supports for cobalt-, iron- and copper-phthalocyanine tetrasulfonates on the autoxidation ... -
Emulsifier-free cationic latexes based on vinylbenzyl chloride and 2-(dimethylamino)ethyl methacrylate with adjusted hydrophilic-hydrophobic properties
Türk, Hayrettin; Karabacak, R. Bengü; Erdem, Murat (Wiley-Blackwell, 2015)Functional emulsifier-free cationic latexes based on styrenic monomer vinylbenzyl chloride (VBC) and acrylic monomer 2-(dimethylamino)ethyl methacrylate (DMA) were successfully prepared with dual quaternary ammonium ions ... -
Enhanced catalytic activity of o-iodosobenzoate in poly[(styrylmethyl)hexadecyldimethylammonium chloride] latexes for the hydrolysis of p-nitrophenyl diphenyl phosphate
Karabacak, R. Bengü; Erdem, Murat; Türk, Hayrettin (Elsevier Science BV, 2011)Six 5.0 mol% crosslinked poly[(styrylmethyl)hexadecyldimethylammonium chloride] latexes containing 8-67% quaternization were synthesized via two-stage process and used as supports for o-iodosobenzoate (IBA) catalyst in the ... -
Facile two-step preparation of polystyrene/anatase TiO2 core/shell colloidal particles and their potential use as an oxidation photocatalyst
Karabacak, R. Bengü; Erdem, Murat; Yurdakal, Sedat; Çimen, Yasemin; Türk, Hayrettin (Elsevier Science Sa, 2014)Titania and materials containing titania have received considerable attention due to their technological importance in many areas. In this study, anatase crystalline titania (TiO2) coated polystyrene (PS) colloidal particles ... -
Facile, efficient, and environmentally friendly alpha- and aromatic regioselective chlorination of toluene using KHSO5 and KCl under catalyst-free conditions
Çimen, Yasemin; Akyüz, Seçkin; Türk, Hayrettin (Royal Soc Chemistry, 2015)Toluene was subjected to room-temperature chlorination with the KHSO5-KCl system in organic solvent-water mixtures. In a typical reaction, the amounts of toluene, KHSO5, and KCl were 1.0, 5.0 and 7.5 millimoles, respectively. ... -
Imprinted polymer/organo-smectite nanocomposites for paraoxon hydrolysis
Erdem, Murat; Say, Rıdvan; Ersöz, Arzu; Denizli, Adil; Türk, Hayrettin (Elsevier Science BV, 2010)We have used the imprinting technique to create a polymer/organo-smectite nanocomposite catalyst. The aim was preparing a synthetic enzyme which shows high selectivity for paraoxon hydrolysis. Paraoxon imprinted ... -
Latexes with Hexadecyl Group on Their Quaternary Ammonium Ions as Catalytic Media for the Hydrolysis of Paraoxon by o-Iodosobenzoate
Karabacak, R. Bengü; Türk, Hayrettin (Taylor & Francis Inc, 2012)The micelle-mimetic poly[(styrylmethyl)hexadecyldimethylammonium chloride] latexes were used as media and supports for o-iodosobenzoate (IBA) catalyst in the hydrolysis of paraoxon (PO). The latex particles contained 16-67 ... -
Non-enzymatic glucose biosensor based on overoxidized polypyrrole nanofiber electrode modified with cobalt(II) phthalocyanine tetrasulfonate
Özcan, Levent; Şahin, Yücel; Türk, Hayrettin (Elsevier Advanced Technology, 2008)An enzymeless biosensor, based on electrode position of overoxidized polypyrrole nanofiber onto pencil graphite electrode and modified with cobalt(II) phthalocyanine tetrasulfonate (CoPcTS), was investigated in this study. ... -
Oxidation of 2,3,6-trimethylphenol with potassium peroxymonosulfate catalyzed by iron and cobalt phthalocyanine tetrasulfonates in a methanol-water mixture
Çimen, Yasemin; Türk, Hayrettin (Elsevier Science BV, 2008)Oxidation of 2,3,6-trimethylphenol (TMP) with potassium peroxymonosulfate (KHSO5) catalyzed by iron phthalocyanine tetrasulfonate ([FePcTS]) in an 8-to-1 methanol-water mixture resulted in 43.2-100.0% conversion of TMP and ... -
Oxidation of 2,6-di-tert-butylphenol with tert-butyl hydroperoxide catalyzed by iron phthalocyanine tetrasulfonate in a methanol-water mixture
Çimen, Yasemin; Türk, Hayrettin (Elsevier Science BV, 2007)The oxidation of 2,6-di-tert-butylphenol (DTBP) with tert-butyl hydroperoxide (Bu'OOH) catalyzed by iron phthalocyanine tetrasulfonate ([FePcTS]) in a 8-to-1 methanol-water mixture resulted with about 70-80% conversion of ... -
Oxidation of 2,6-di-tert-butylphenol with tert-butyl hydroperoxide catalyzed by iron porphyrin tetrasulfonate, iron porphyrin tetracarboxylate and their supported analogues in a water-methanol mixture
Mutlu, Yasemin Çimen; Semerci, Tugce Günay; Türk, Hayrettin (Elsevier Science BV, 2019)In this study, two water-soluble iron porphyrins bearing sulfonate and carboxylate functionalities (FePTS and FePTC, respectively) and their supported analogues were used as catalysts for the oxidation of 2,6-di-tert-butylphenol ... -
Oxidation of 2,6-di-tert-butylphenol with tert-butylhydroperoxide catalyzed by cobalt(II) phthalocyanine tetrasulfonate in a methanol-water mixture and formation of an unusual product 4,4 '-dihydroxy-3,3 ',5,5 '-tetra-tert-butylbiphenyl
Türk, Hayrettin; Çimen, Yasemin (Elsevier Science BV, 2005)The oxidation of 2,6-di-tert-butylphenol (DTBP) with tert-butylhydroperoxide (Bu'OOH) catalyzed by cobalt(II) phthalocyanine tetrasulfonate ([CoPcTS](4-)) in a 4:1 methanol-water mixture gave predominantly the coupled ... -
Oxidation of Thymol and Carvacrol to Thymoquinone with KHSO5 Catalyzed by Iron Phthalocyanine Tetrasulfonate in a Methanol-Water Mixture
Günay, Tugce; Çimen, Yasemin; Karabacak, R. Bengü; Türk, Hayrettin (Springer, 2016)The oxidation of thymol and carvacrol to thymoquinone with potassium peroxymonosulfate (KHSO5) catalyzed by iron phthalocyanine tetrasulfonate (FePcTS) in a methanol (4.0 mL)-water (0.5 mL) mixture has been carried out. ... -
Preparation of cationic latexes with different length alkyl groups on their quaternary as supports for IBA catalyst ammonium ions and their use in the hydrolysis of PNPDPP
Erdem, Murat; Türk, Hayrettin (Elsevier Science BV, 2008)In this study, four cationic latexes containing n-hexadecyl, n-octyl, or a methyl group as one of the alkyls on their quaternary ammonium ions were synthesized and used as supports for o-iodosobenzoate (IBA) catalyst in ... -
Preparation of PS Colloids with DMA and MMA Comonomers and Suitability of P(S/DMA) for Colloidal Silica Deposition
Karabacak, R. Bengü; Türk, Hayrettin (Taylor & Francis Inc, 2012)There is a lack of investigation on the effects of hydrophilic comonomer and pH on the particle size of functionalized polystyrene colloids. In this study, polystyrene (PS) colloids were prepared via emulsifier-free emulsion ... -
Structural stabilities of N-permethylated tetracations of meso-tetrakis(4-pyridyl)porphyrin, meso-tetrakis[4-(dimethylamino)phenyl]porphyrin, and their manganese(III) complexes toward hydrogen peroxide, tert-butylhydroperoxide, and sodium hypochlorite
Türk, Hayrettin; Erdem, Murat (Soc Porphyrins & Phthalocyanines, 2004)The degradation rate constants of the tetracations 5,10,15,20-tetrakis(N-methylpyridinium-4-yl)porphyrin and 5,10,15,20-tetrakis(N,N,N-trimethylanilinium-4-yl)porphyrin as well as their manganese(III) complexes toward the ... -
Structural stabilities of sulfonated manganese tetramesitylporphyrin and its beta-brominated analogue toward NaOCl, H2O2 and (CH3)(3)COOH
Türk, Hayrettin; Tay, Turgay; Berber, Hüseyin (Elsevier Science BV, 2000)This article gives the degradation rate constants of meso-tetrakis(3,5-disulfonatomesityl)porphinatomanganese(III) X (where X = H2O and/or OH- depending on pH) (MnTMSP) and its beta-brominated analogue (MnTMSPBr8) toward ...