Güncel Gönderiler: Kimya Bölümü
Toplam kayıt 244, listelenen: 81-100
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Non-Acidic Mediated Friedel-Craft Reaction of Thiophene Using EtAlCl2
(Asian Journal Of Chemistry, 2013)Since alkyl Lewis acids are Bronsted bases, they give a non-acidic reaction media. In this context, acylation of thiophene is investigated in the presence of EtAlCl2 and non-acidic media. Besides 8 examples of thiophene, ... -
Preconcentration and electroanalysis of silver at pt electrode modified with poly(2-aminothiazole)
(Maik Nauka/Interperiodica/Springer, 2013)Conducting poly(2-aminothiazole) (PAT) films were electrodeposited on a platinum disc electrode surface by constant potential electrolysis of 2-aminothiazole (AT) for the stripping voltammetric determination of Ag(I). Ag(I) ... -
Statistical Classification of Cigarettes Using High Pressure Liquid Chromatograms of Cigarette Filter Tar as Fingerprint
(Asian Journal Of Chemistry, 2013)In this work, we have showed that a liquid chromatogram can be used as finger print to characterize and classify cigarettes. A liquid chromatographic (high pressure liquid chromatography) procedure was first developed to ... -
Fabrication and characterization of gold-nanoparticles/chitosan film: a scaffold for L929-fibroblasts
(Taylor & Francis Ltd, 2013)The objective of the present study was to fabricate a gold nanoparticle crosslinked chitosan (Ch/AuNPs) composite film simple and to evaluate its use as a carrier matrix for L929-fibroblasts. L929-fibroblasts were seeded ... -
Polymers from renewable resources: synthesis and characterization of poly(2,5-dihydro-2,5-dimethoxy furan)
(Scientific Technical Research Council Turkey-Tubitak, 2012)The cationic polymerization of cis, trans-2,5-dihydro-2,5-dimethoxy furan (DHMF) was studied in the presence of HClO4, in acetonitrile. Different reaction parameters were investigated such as initiator concentration and ... -
An indirect thermodynamic model developed for initial stage sintering of an alumina compacts by using porosity measurements
(Springer, 2012)The specific micro- and mesopore volumes (V) of alumina compacts fired between 900 and 1250 A degrees C for 2 h were determined from nitrogen adsorption/desorption data. The V value was taken as a sintering equilibrium ... -
Investigation on selective adsorption of Hg(II) ions using 4-vinyl pyridine grafted poly(ethylene terephthalate) fiber
(Wiley, 2012)In the work, poly(ethylene terephthalate) (PET) fibers were grafted with 4-vinyl pyridine (4-VP) monomer using benzoyl peroxide (Bz(2)O(2)) as initiator in aqueous media. The removal of Hg(II) ions from aqueous solution ... -
Improvement of Bioethanol Productivity of Immobilized Saccharomyces Bayanus with Using Sodium Alginate-Graft-Poly(N-Vinyl-2-Pyrrolidone) Matrix
(Springer, 2012)In this study, immobilization conditions and bioethanol production characteristics of immobilized Saccharomyces bayanus were investigated into sodium alginate-graft-poly(N-vinyl-2-pyrrolidone; NaAlg-g-PVP) matrix. The ... -
Immobilization of laccase on polyacrylamide and polyacrylamide – κ – carragennan-based semiinterpenetrating polymer networks
(Informa Healthcare, 2012)In this study, laccase enzyme (L) from Agaricus bisporus was immobilized by entrapment into polyacrylamide (PAAm) and semi-interpenetrating polymer networks (semi-IPNs) prepared with either polyacrylamide/kappa-carragennan ... -
Polyaniline micro-rods based heterojunction solar cell: Structural and photovoltaic properties
(Amer Inst Physics, 2012)The present paper reports the fabrication and photovoltaic characterization of pure and dodecyl benzene sulfonic acid (DBSA)-doped polyaniline (PAni) micro-rods polymer/n-Si heterojunction solar cells, and also the ... -
Voltammetric determination of Hg(II) at poly(2-aminothiazole) modified platinum electrode.
(Parlar Scientific Publications (P S P), 2011)Conducting poly(2-aminothiazole) (PAT) film was electrodeposited on platinum disc electrode surface by cyclic voltammetry of 2-aminothiazole (AT) for stripping voltammetric determination of Hg(II). Hg(II) was pre-concentrated ... -
Application of well-defined ruthenium alkylidenes to the ROMP of norbornene derivatives: Methoxyphenyl-substituted polynorbornene dicarboximides
(Elsevier Science Bv, 2011)The applicability of ruthenium alkylidenes as initiators in the ring opening metathesis polymerization (ROMP) of methoxyphenyl group containing norbornene derivatives has been investigated. The synthesis and polymerization ... -
pH responsive itaconic acid grafted alginate microspheres for the controlled release of nifedipine
(Elsevier Sci Ltd, 2011)A series of pH responsive alginate-g-poly(itaconic acid) (NaAlg-g-PIA) microspheres were prepared as drug delivery matrices of nifedipine cross-linked by glutaraldehyde (GA) in the hydrochloric acid catalyst. Graft copolymers ... -
Electrochemical polymerization of 2-aminothiazole
(Springer, 2011)Electrochemical polymerization of 2-aminothiazole (AT) was studied in acetonitrile with tetrabutylammonium tetrafluoroborate (TBAFB) as the supporting electrolyte via constant potential electrolysis (CPE). The redox behavior ... -
Immobilization of Saccharomyces cerevisiae on to modified carboxymethylcellulose for production of ethanol
(Springer, 2011)In this work, modified carboxymethylcellulose (CMC) was used as a new support material for production of ethanol. Crosslinked graft copolymers of CMC with N-vinyl-2-pyrrolidone (N-VP) were prepared in different grafting ... -
Copper-catalyzed asymmetric conjugate addition of diethylzinc to substituted chalcones using a chiral phosphine ligand
(Pergamon-Elsevier Science Ltd, 2011)A series of chiral phosphine PFAM and phosphine oxide POFAM ligands were studied for the copper-catalyzed asymmetric diethylzinc addition to enones. One of these ligands, PFAM2, was an efficient catalyst with a variety of ... -
Synthesis of High-T-g Polymers via ROMP of Oxanorbornene Dicarboximides with Halogen Groups
(Wiley-Blackwell, 2010)This paper describes the synthesis of exo-N-phenyl-7-oxanorbornene-5, 6-dicarboximides with different substituents at para positions in the aromatic ring and their polymerization by ring-opening metathesis polymerization ... -
Cytotoxicity and apoptotic effects of nickel oxide nanoparticles in cultured HeLa cells
(Via Medica, 2010)The aim of this study was to observe the cytotoxicity and apoptotic effects of nickel oxide nanoparticles on human cervix epithelioid carcinoma cell line (HeLa). Nickel oxide precursors were synthesized by an nickel ... -
Graft copolymerization of itaconic acid onto sodium alginate using benzoyl peroxide
(Elsevier Sci Ltd, 2010)Graft copolymers of sodium alginate (NaAlg) with itaconic acid (IA) were prepared in aqueous solution using benzoyl peroxide (BPO) as the initiator. Grafted copolymers (NaAlg-g-PIA) were characterized by Fourier transform ... -
Application of FAM ligands in the metal-promoted catalytic enantioselective synthesis of organic compounds
(Scientific Technical Research Council Turkey-Tubitak, 2009)Novel ferrocenyl substituted aziridinyl methanol (FAM) ligands were synthesized and successfully used in metal-promoted catalytic enantioselective azomethine ylide cycloadditions, diethylzinc additions to enones, alkynylzinc ...