Fen-Edebiyat Fakültesi: Recent submissions

Now showing items 121-140 of 1561

Aminopyrazole-substituted metallophthalocyanines: Preparation, aggregation behavior, and investigation of metabolic enzymes inhibition properties

Güzel, Emre; Umit M. Kocyigit; Baris S. Arslan; Mehmet Atas; Parham Taslimi; Faik Gokalp; Nebioğlu, Mehmet; Şişman, İlkay; Ilhami Gulcin (WILEY-V C H VERLAG GMBH, 2019)

The synthesis, characterization, aggregation behavior, theoretical studies, and investigation of antimicrobial, antidiabetic, and anticholinergic properties of 4-(2-(5-amino-4-(4-bromophenyl)-3-methyl-1H-pyrazol-1-yl)eth ...
Synthesis of tetra-substituted phthalocyanines bearing 2-(ethyl(m-tolyl) amino)ethanol: Computational and photophysicochemical studies

Günsel, Armağan; Bilgiçli, Ahmet Turgut; Burak Tuzun; Hasan Piskin; Goknur Yasa Atmaca; Ali Erdogmus; Yaraşır, Meryem Nilüfer (ELSEVIER SCIENCE SA, 2019)

This work presents the synthesis of 4-(2-(ethyl(m-tolyl) amino) ethoxy) phthalonitrile (1) as ligand and its peripherally tetrasubstituted metal-free (2) and metallophthalocyanines (3-5) derivatives. Synthesized compounds ...
Synthesis, characterization, biological evaluation, and molecular docking studies of some piperonyl-based 4-thiazolidinone derivatives

Genç Bilgiçli, Hayriye; Parham Taslimi; Busra Akyuz; Burak Tuzun; Ilhami Gulcin (WILEY-V C H VERLAG GMBH, 2019)

Heterocyclic compounds are of particular importance among pharmacologically active compounds. In this study, some piperonyl-based 4-thiazolidinone derivatives (2a-i) were synthesized and characterized by spectroscopic ...
Synthesis, antioxidant activity and SAR study of novel spiro-isatin-based Schiff bases

Sönmez, Fatih; Zuhal Gunesli; Belma Zengin Kurt; Isil Gazioglu; Avcı, Davut; Küçükislamoğlu, Mustafa (SPRINGER, 2019)

.
Reduced Graphene Oxide/Pt Nanoparticles/Zn-MOF-74 Nanomaterial for a Glucose Biosensor Construction

Didem Uzak; Atheer Atiroglu; Vesen Atiroglu; Çakıroğlu, Bekir; Özacar, Mahmut (WILEY-V C H VERLAG GMBH, 2019)

In this study, a new glucose biosensor was fabricated by immobilizing glucose oxidase (GOx) on platinum nanoparticles (Pt NPs) decorated reduced graphene oxide (rGO)/Zn-MOF-74 hybrid nanomaterial. Herein, the biosensor ...
Real-time high-speed 5-D hyperchaotic Lorenz system on FPGA

Ismail Koyuncu; Murat Alcin; Tuna, Murat; Pehlivan, İhsan; Varan, Metin; Sundarapandian Vaidyanathan (INDERSCIENCE ENTERPRISES LTD, 2019)

Chaotic systems have several engineering applications such as cryptology, random number generators, image processing and secure communication. A basic structure used in these studies is a chaotic oscillator design that ...
Reduced graphene oxide supported tin oxide-boron oxide flexible paper anodes for Li-ion batteries

Köse, Hilal; Dombaycıoğlu, Şeyma; Dombaycıoğlu, Şeyma; Akbulut, Hatem; Aydın, Ali Osman (SCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY-TUBITAK, 2019)

Freestanding tin oxide-boron oxide/reduced graphene oxide (SnO2-B2O3/rGO) nanocomposite anode was produced for Li-ion cells. This binder-free flexible paper anode structure was fabricated by combining SnO2-B2O3 composite ...
Equilibrium data and process design for adsorption of disperse dyes onto alunite

Özacar, Mahmut; Şengil, İsmail Ayhan (SPRINGER-VERLAG, 2004)

Adsorption of disperse dyes from aqueous solutions onto calcined alunite has been investigated to assess the possibility of using alunite for removing disperse dyes from aqueous solutions. The effects of particle size, ...
High Temperature Bromination of Biphenylene

Tutar, Ahmet (1997)
Unsymmetrically pyrazole-3-carboxylic acid substituted phthalocyanine-based photoanodes for use in water splitting photoelectrochemical and dye-sensitized solar cells

Burak Yildiz; Güzel, Emre; Duygu Akyuz; Baris Seckin Arslan; Atif Koca; M. Kasim Sener (PERGAMON-ELSEVIER SCIENCE LTD, 2019)

A new photosensitizer, PCA-ZnPc-2, was synthesized through the asymmetric functionalization of phthalocyanine ring with a pyrazole-3-carboxylic acid as the electron-withdrawing and anchoring group and six hexylsulfanyl as ...
Synthesis of non-peripherally tetra-substituted copper(ii) phthalocyanines: characterization, optical and surface properties, fabrication and photo-electrical properties of a photosensitive diode

Günsel, Armağan; Bilgiçli, Ahmet Turgut; Hasan Piskin; Burak Tuzun; M. Nilufer Yarasir; Bayram Gunduz (ROYAL SOC CHEMISTRY, 2019)

This study describes the synthesis and characterization of a non-peripherally tetra-substituted copper(ii) phthalocyanine bearing 4-(trifluoromethoxy)phenol groups. Some spectroscopic techniques such as FT-IR, H-1-NMR, ...
High Photosensitized Singlet Oxygen Generating Zinc and Chloroindium Phthalocyanines Bearing (4-isopropylbenzyl)oxy Groups as Potential Agents for Photophysicochemical Applications

Baris S. Arslan; Goknur Yasa Atmaca; Nebioğlu, Mehmet; Nebioğlu, Mehmet; Ali Erdogmus (WILEY-V C H VERLAG GMBH, 2019)

In this study, novel phthalonitrile derivatives (1 and 2) and their peripherally and non-peripherally tetra (4-isopropylbenzyl)oxy-substituted zinc and chloroindium phthalocyanine complexes (3-6) have been prepared for the ...
Synthesis, characterization, crystal structures, theoretical calculations and biological evaluations of novel substituted tacrine derivatives as cholinesterase and carbonic anhydrase enzymes inhibitors

Salih Okten; Makbule Ekiz; Umit Muhammet Kocyigit; Tutar, Ahmet; Çelik, İsmail; Mehmet Akkurt; Faik Gokalp; Parham Taslimi; Ilhami Gulcin (ELSEVIER SCIENCE BV, 2019)

The six and seven hydrocycle membered disilylanilino acridine (tacrine) analogues (9-11) were synthesized by one-pot procedures. The structures of novel silyl tacrine derivatives were characterized by NMR spectroscopy, ...
Substituted manganese phthalocyanines as bleach catalysts: synthesis, characterization and the investigation of de-aggregation behavior with LiCl in solutions

Pinar Sen; Yıldız, Salih Zeki (SPRINGER, 2019)

This study reported the oxidative degradation of morin dye with hydrogen peroxide catalyzed by manganese phthalocyanines as low temperature bleaching catalysts for laundry applications. A novel series of manganese ...
The comprehensive investigation of the room temperature ionic liquid additives in PVC based polymer inclusion membrane for Cr(VI) transport

Halil Ibrahim Turgut; Eyüpoğlu, Volkan; Kumbasar, Recep Ali (WILEY, 2019)

This study is to perform the comprehensive investigation of PVC based ionic plasticized membrane (IPM) production by using room temperature ionic liquid (RTIL)-based additives and the membrane application of selective ...
Ag/Ag(2)Cra(4) nanoparticles modified on ZnO nanorods as an efficient plasmonic photocatalyst under visible light

Güy, Nuray; Özacar, Mahmut (ELSEVIER SCIENCE SA, 2019)

The highly efficient plasmonic photocatalysts have drawn attention with their effective charge carrier separation capabilities and visible light absorption features, which makes them immensely favorable material in the ...
The novel multi cross-linked enzyme aggregates of protease, lipase, and catalase production from the sunflower seeds, characterization and application

Özacar, Mahmut; Atheer Awad Mehde; Wesen Adel Mehdi; Zeynep Ziyade Ozacar; Severgün, Olcay (ELSEVIER SCIENCE BV, 2019)

The cross-linked enzyme aggregates (CLEAs) have numerous economic advantages in the industrial bio catalysis. In the present study, the multi CLEAs containing protease, catalase, and lipase from the sunflower seeds using ...
A photoelectrochemical glucose and lactose biosensor consisting of gold nanoparticles, MnO2 and g-C3N4 decorated TiO2

Çakıroğlu, Bekir; Yigit Can Demirci; Emine Gokgoz; Özacar, Mahmut (ELSEVIER SCIENCE SA, 2019)

In this study, an innovative light-sensitive hybrid material was used for the photoelectrochemical (PEC) biosensor fabrication. Herein, gold nanoparticles modified mesoporous TiO2 was coated on an indium fin oxide substrate, ...
Preparation and antibacterial properties of nano biocomposite Poly(epsilon-caprolactone)-SiO2 films with nanosilver

Olgun, Uğursoy; Tunç, Kenan; Aysegul Hos (SPRINGER, 2019)

Two different silica samples with different particle size distributions (Silica-I: 40-63m, Silica-II: 90% below <55m) were utilized after the nano silver (5-30nm) coating process by poly(dimethylsiloxane) in acetone. The ...
The biotransformation of 5ß-methyl-19-norpregn-9-enes by Cephalosporium aphidicola

Yıldırım, Kudret (2004)

The biotransformation of 3β-hydroxy-5β-methyl-19-norpregn-9-en-20-one and the corresponding 3,20-dione by Cephalosporium aphidicola has been shown to give 10β-hydroxy-5β-methyl-19-norpregn-9(11)-ene-3,20-dione and related ...