Browsing Kimya by Title

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  • A comparative study on selective biosorption in aqueous mixtures of dyes with different ionic characters by chlorella sp. biomass 
    Yılmaz, Beyza. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    In this study, the adsorption percentages of Chlorella Sp. biomass towards five ionic dyes and their relevant combinations in aqueous media were studied as a model system for wastewater remediation compared to a proper ...
  • A computational analysis of solvent effect :|thiol-ene reactions and CaO bond strength within hydrated calcium clusters 
    Munar, İpek. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    In the first part this thesis, the solvent effect on thiol-ene reaction kinetics is elucidated. The effect of polar media on the reaction kinetics is taken into account by using the transition state theory, the reactivities ...
  • A computational approach the free radical polymerization of acrylates and methacrylates 
    Değirmenci, İsa. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    Free radical polymerization (FRP) is one of the most favorable chemical reactions employed in both industry- and laboratory-scale chemical productions, because it can convert a wide variety of vinyl monomers into high ...
  • A computational approach to evaluate the pKa's of quinazoline derivatives 
    Kıran, Melisa. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    One of the most important constants in chemistry is the ionization (dissociation) constant (pKa). Estimating the pKa value(s) for a potential drug is critical, especially since computations are considerably less expensive ...
  • A computational approach to optical and charge carrier properties of organic semiconductors 
    Turan, Haydar Taylan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2016.)
    In this study, the structural and optical properties of various organic semiconductors have been computationally investigated. In the first part, linear and nonlinear optical properties of a series of bis(E-dimesitylbory ...
  • A computational approach to the core of eunicellins 
    Bozkurt, Esra. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    The asymmetric Diels-Alder reaction has attracted much interest for decades. Most recently, interest in the use of catalysts in cycloadditions has gained momentum due to their capacity to provide complex stereoselectivity ...
  • A computational insight on self - etchinh and bistyrenic monomers 
    Özaydın, Gül Beste. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Cyclopolymerization reaction of difunctional styrene monomers and the efficient binding of self-etching monomers to the hydroxyapatite component of the tooth have been widely studied using empirical approaches. However, ...
  • A computational study on the design of donor - acceptor copolymers for organic photovoltaic materials 
    Kahraman, Birce. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Organic solar cells are one kind of renewable energy. In this study, 50 different donor-acceptor oligomers, which were used for photovoltaic materials, were investigated by using 5 different acceptors, which are ...
  • A DFT study of the four-center HF eliminations from fluoroethylenes: transition state and charge analysis along the IRC 
    Önlü, Serli. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    The unimolecular, ground-state, four-center hydrogen fluoride elimination from vinyl fluoride, 1,1-difluoroethylene, trans-1,2-difluoroethylene, and trifluoroethylene reactions were investigated in this thesis. Hartree-Fock ...
  • A hybrid computational approach to the benzoin synthesis in different media 
    Topal, Kevser Göçmen. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Benzoin derivatives are widely used in organic chemistry, mainly as starting materials in drug synthesis and photoinitiators in polymer chemistry, due to their bifunctionality, the presence of the asymmetric center, and ...
  • A parametric study of laboratory scale manifacture of sodiumallysulfonate 
    Börekcioğlu, Pınar. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Scieence and Engineering, 1986., 1986.)
    The main aim of this work involyes the manufacture of sodium allylsulfonate from allylbromide and sodium sulfite by using laboratory scale testing of the commonly used industrial batch method(1). Yield of sodium allylsulfonate ...
  • A study on halloysite reinforced chitosan hydrogel nanocomposites: synthesis, characterization & DYE adsorption properties 
    Palantöken, Sinem. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    In this project, synthesis and characterization of a series of natural silica nanotube reinforced chitosan nanocomposite hydrogels are done. Nanocomposite hydrogels were prepared through physical crosslinking of chitosan ...
  • A theoretical investigation of solvent effect on the conformational equilibria of 2-substituted cyclohexanone ketal derivatives 
    Sağ-Erdem, Safiye. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1995., 1995.)
    The conformational equilibria of 6-substituted-1,4-dioxospiro-[4.5]decanes and 7substituted-1,5-dioxospiro [5.5]undecanes, relatively complex polar systems, with substituents X=-CH3, -F, -CI, -CN, -OH, -OCH3, -N02 have ...
  • Active and passive tumor targeting via micellar dendritic constructs 
    Sümer, Burcu. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Among many other nanotherapeutics, polymeric micellar systems are emerging as a very important class of nano-pharmaceuticals due to their ability to improve pharmacokinetics and bio-distribution of chemotherapy drugs as ...
  • Activity of topotecan as topoisomerase IB inhibitor 
    Bali, Semiha Kevser. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Human Topoisomerase I (TopoI) is an enzyme that relaxes the supercoils on the DNA. First, it creates a nick only on one strand of DNA by covalently binding to it, and relaxes DNA by rotating the nicked strand around the ...
  • Adsorption of branched polymer chains onto solid substrates 
    Özer, Sümeyye. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Polymer thin films have a wide range of applications in photovoltaic materials, biomedical coatings, and nanolithography. Thin films are prepared using either solution or melt deposition techniques in which residual stresses ...
  • Aldol reactions of conformationally stable o-CF3 phenyl bearing axially chiral thiohydantoins 
    Bacak Erdik, Melis. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    Novel axially chiral thiohydantoin derivatives bearing an o-CF3 phenyl ring have been synthesized atroposelectively from the reaction of R and S alanine, phenyl alanine and valine methyl ester HCl salts with ortho-triflu ...
  • An investigation of the carbon-carbon bond rupture in fluoroethanes by RRKM theory 
    Aviyente, Viktorya. (Thesis (Ph.D.)- Bogazici University. Institute for Graduate Studies in Social Sciences, 1983., 1983.)
    In this dissertation, the thermal decompositions of ethane, 1,1,2,2-tetrafl uoroethane, pentafl uoroethane and hexafl uoroethane have been subjected to a theoretical treatment i n terms of the quantum statistical RRKM ...
  • An investigation of the effect of CD, HG and ZN on the growth of two species of blue green algae 
    Ağlarca, Zeynep. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1983., 1983.)
    In this research, effects of three metals, cadmium, mercury and zinc were investigated on two species of blue green algae, Anabaena flos aquae and Gloeocapsa. Cells were grown in sterile medium free of combined nitrogen ...
  • Analysis of the radical polymerizability of diallyl monomers 
    Tüzün, Nurcan Şenyurt. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2002., 2002.)
    In this study, the radical cyclopolymerization mechanism of diallylamine and diallyl ether monomers and their derivatives has been investigated by computational modeling. The calculations were performed by the Density ...

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