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Fen Bilimleri Enstitüsü: Recent submissions

Now showing items 1561-1580 of 3863

Investigation of reaction mechanism of epoxy resins with amide functional groups

İkikardeşler, Seda. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

Epoxy resins are used for many applications due to their noteworthy properties such as low creep, reasonable elevated temperature performance, chemical resistance and good adhesion to various substrate, etc. Epoxy resins ...
Study of new age liposomes :|transethosomes

Güler, Canan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

Liposomes are vesicles formed by the self-arrangement of amphiphilic molecules into bilayer form, enclosing an aqueous core. The fact that these vesicles resemble the skin structure makes them ideal carriers for active ...
Investigating the photoinitiated polymerization kinetics of thioxanthone acetic acid derivatives :|a computational study

Metin, Eyüp. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

In this study, we have investigated the kinetic and thermodynamic parameters of the initiation reactions of two well-known photoinitiator types; One-Component Type II and conventional Type II. Density Functional Theory ...
Novel two-photon absorbing dyes :|their possible use in photoactive applications

Şengül, Özlem. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

In this study, the linear and non-linear optical properties of two recently synthesized polythiophene based dyes, DTP1 and DTP2, were investigated. In the ﬁrst part, a thorough conformational search was performed, the ...
Effect of polymer topology on non-covalently bonded polyesters

Süsler, Göknil. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

Synthetic polymers have a crucial role in our daily lives. The irreversible nature of covalent bonding in conventional synthetic polymers makes them non-recyclable and prevents re-processing of the materials. Throughout ...
Syntheses of novel acetal-based formaldehyde-free crosslinkers

Öz, Şule Nihal. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

Crosslinking of polymers is a fundamental process applied in industry to enhance mechanical and physical properties of polymeric materials. Wide variety of crosslinkers are available to be used for this purpose whose ...
Syntheses and characterization of polyesters derived from resorcinol and iso/terephthaloyl chloride

Tığrak, Refia. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

Polyarylates are important class of polyesters, which are used for different application areas to improve thermal and mechanical properties of polymeric materials. They are also known as weatherable polymers that provide ...
Polymer brush coated iron oxide nanoparticles for biomedical applications

Bilgin, Mustafa Görkem. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

In recent years, the use of iron oxide nanoparticles has gained importance for biological applications such as hyperthermia, targeted drug delivery, drug release, bioseparation, bio-imaging etc. since they are mono-disperse, ...
Utilization of microalgae in green context :|adsorptive removal of ionic contaminants from aqueous media and production of microalgal bioplastics

Özgümüş, Beste. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

Microalgae are known for their remarkable growth rates and adaptation capa bilities. In this study, microalgae were used as environmentally friendly materials for two diﬀerent applications. The ﬁrst part is focused on ...
Synthesis and barriers to rotation in axially chiral barbituric and thiobarbituric acid derivatives

Olgun, Elif. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2005., 2005.)

In this study, 5,5-dimethyl-1-(0-bromopheny1)-2-thiobarbituric acid has been synthesized by the reaction of the corresponding N-o-arylthiourea with the dimethylmalonic acid in the presence of acetylchloride. The o-fluoro ...
Preparation and properties of white-pine-PMMA composites

İnhan, Günseli Ayşe. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1983., 1983.)

Wood-polymer composites fromTurkish White pine (pinea siber)-Polymethylmethacrylate (PMMA), are prepared by heat catalysis method. Monomer loss during polymerization i s prevented by impregnation of wood in PMMA + MMA ...
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 ...
Modeling the photo-oxidative degradation mechanisms of thiophene in boron-containing oligothiophenes and the ignition reactions of hypergolic propellants

Kucur, Oğuzhan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

This dissertation, employs computational methods to investigate i) the photooxidative degradation mechanisms of thiophene in boron-containing oligothiophenes and ii) the ignition reactions of hypergolic propellants. In ...
Investigation of polyethylene terephthalate synthesis via solution polymerization technique

Yeşil, Işıl. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

Poly (ethylene terephthalate) (PET) is a thermoplastic polyester commonly used in the industry owing to its good mechanical strength, thermal stability, high solvent resistance and low-cost production. According to application ...
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, ...
Modelling of the binding of TRPV1 receptor to capsaicin, capsazepine and related agonists and antagonists

İnce, Büşra. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

Capsaicin is a natural compound found in hot pepper and is an agonist of the receptor protein TRPV1 (Transient Receptor Potential Vanilloid) in dorsal root ganglia. TRPV1 is responsible for pain and heat perception. ...
Synthesis of redox - responsive hydrogels for controlled release of therapeutic agents

Kılıç, Ruveyda. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

In recent years, hydrogels have attracted great attention for various biomedical applications ranging from chemical and biological sensing, delivery of therapeutic agents to tissue engineering. Reason for utilization of ...
Modeling the potential use of polyfluorinated phthalocyanines as photosensitizers in photodynamic therapy

Koca, Başak. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

In recent years, phthalocyanine compounds which possess an aromatic macro cyclic ring, have been extensively used in photodynamic therapy as non-toxic photosen sitizers due to their photophysical properties and their intense ...
Design of new thermally activated delayed fluorescence materials for oled applications using computational chemistry

Özbek, Rengin Büşra. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

This study is a theoretical assessment of thermally activated delayed ﬂuorescence (TADF) features of fourteen molecules. The analysis based on three diﬀerent descriptors; the twisting angle (α), Φs index and ∆ES−T. The ...
Synthesis and photopolymerizations of new methacrylate crosslinkers and antibacterial quanternary ammonium monomers

Ayfer, Burcu Sunam. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2004., 2004.)

In the first part of this work, new amine monomers were synthesized from the reaction of 3-(acryloyloxy)-2-hydroxypropylmethacrylate (AHM), acrylamide and methacrylamide with various amines and then reacted with various ...

Now showing items 1561-1580 of 3863

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