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Kimya: Recent submissions

Now showing items 161-180 of 222

Synthesis of novel tetrols from syn-bisepoxide: Preparation of halogenated bicyclo[4.2.0] inositols

Karanfil, Abdullah; Kelebekli, Latif; Sahin, Ertan (PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND, 2020)

The synthesis of halogenated bicyclo[4.2.01 inositols (and/or tetrols) are described. The photooxygenation of trans-7,8-dibromobicyclo[4.2.01octa-2,4-diene obtained using cyclooctatetraene as the starting molecule afforded ...
Synthesis, structural identifications of bioactive two novel Schiff bases

Erturk, Aliye Gediz (ELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS, 2020)

Two new Schiff base compounds with high biological activity were derived from the condensation reaction of two substitute aldehydes (10-chloroanthracene-9-carbaldehyde/8-hydroxyquinoline-2-carbaldehyde) and 4-aminoantipyrine. ...
Synthesis and Cytotoxic Evaluation of Some Substituted 5-Pyrazolones and Their Urea Derivatives

Erturk, Aliye Gediz; Omerustaoglu, Hilal (MDPI, ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND, 2020)

In this paper, a series of new substituted-5-pyrazolones were first synthesized, then formulated by the Vilsmeier-Haack reaction to obtain substituted-4-carbaldehyde-5-pyrazolones. In the final step, when urea was reacted ...
A new ethanol biosensor based on polyfluorene-g-poly(ethylene glycol) and multiwalled carbon nanotubes

Bekmezci, Siddika Aybuke; Soylemez, Saniye; Toppare, Levent; Udum, Yasemin A.; Yagci, Yusuf; Yilmaz, Gorkem (PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND, 2020)

Functionalization of the conjugated polymers has gained considerable interest in the biomedical engineering and biosensing applications as distinct properties can be imparted to the corresponding pristine analogues. In the ...
Phenolic compounds profile, neuroprotective effect and antioxidant potential of a commercial Turkish coffee

Col Ayvaz, Melek (PONTIFICIA UNIVERSIDADE CATOLICA CAMPINAS, NUCLEO EDITORACAO SBI-CCV, CAMPUS II AV JOHN BOYD DUNLOP S-N PREDIO ONTOLOGIA JD IPAUSSURAMA, CAMPINAS, SP 13060-904, BRAZIL, 2020)

Objective The purpose of this study is to determine the phenolic and flavonoid contents, and antioxidant activities and neuroprotective effects of powdered coffee sample of a commercial coffee brand originated from ...
Photophysical Properties of New Pyrazolone Based Azo- Compounds

Bagdatli, Emine; Yaman, Derya (SPRINGER/PLENUM PUBLISHERS, 233 SPRING ST, NEW YORK, NY 10013 USA, 2020)

New 5-pyrazolone based azo- dyes (2-5) and a bisazo- dye (6) were synthesized via diazo- coupling reaction with substituted aryl amines. All azo-5-pyrazolone compounds were characterized with the aid of FTIR, UV-Vis., H-1 ...
Effect of alpha- and gamma-alumina on the precipitation of positive electrolyte in vanadium redox battery

Gencten, Metin; Gursu, Hurmus; Sahin, Yucel (PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND, 2017)

In this study, the effect of alpha-alumina (alpha-Al2O3) and gamma-alumina (gamma-Al2O3) on the precipitation of the positive electrolyte, which is one of the most important problems in vanadium redox battery (VRB) systems, ...
Anti-precipitation effects of TiO2 and TiOSO4 on positive electrolyte of vanadium redox battery

Gencten, Metin; Gursu, Hurmus; Sahin, Yucel (PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND, 2017)

In this study, the effects of TiO2 and TiOSO4 on the precipitation of the positive electrolyte of vanadium redox battery (VRB) systems were investigated. TiO2 and TiOSO4 were used as anti -precipitating agents for V(V) ...
Evaluation of some 5-pyrazolone-based copper(II) complexes as catalysts for the oxidation of trans-stilbene

Bagdatli, Emine (SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA, 2017)

The catalytic properties of the azo- and bisazo-5-pyrazolone-based three copper(II) complexes have been studied. Heating under reflux with or without ultrasonic irradiation was applied for the different equivalent amounts ...
A novel polysiloxane-based polymer as a gel agent for gel-VRLA batteries

Donmez, Koray B.; Gencten, Metin; Sahin, Yucel (SPRINGER HEIDELBERG, TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY, 2017)

In this study, a novel polysiloxane-based gel agent (PSGA) was synthesized by using poly(dimethylsiloxane-co-alkylmethylsiloxane) and used as a gel agent for gel-valve-regulated lead-acid batteries. A PSGA was characterized ...
Synergistic tungsten oxide/organic framework hybrid nanofibers for electrochromic device application

Dulgerbaki, Cigdem; Komur, Ali Ihsan; Kuralay, Filiz; Maslakci, Neslihan Nohut; Oksuz, Aysegul Uygun (ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2017)

We report the first successful applications of tungsten oxide/conducting polymer hybrid nanofiber assemblies in electrochromic devices. Poly(3,4-ethylenedioxythiophene)/tungsten oxide (PEDOT/WO3) and polypyrrole/tungsten ...
One-step electrochemical preparation of graphene-coated pencil graphite electrodes by cyclic voltammetry and their application in vanadium redox batteries

Gencten, Metin; Gursu, Hurmus; Sahin, Yikel (PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND, 2017)

In this study, a novel technique was investigated for the one-step production of graphene layers on a pencil graphite electrode. To the best of our knowledge, this report is the first to describe the formation of graphene ...
Electrochemical bacterial detection using poly(3-aminophenylboronic acid)-based imprinted polymer

Beni, Valerio; Golabi, Mohsen; Jager, Edwin W. H.; Kuralay, Filiz; Turner, Anthony P. F. (ELSEVIER ADVANCED TECHNOLOGY, OXFORD FULFILLMENT CENTRE THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND, 2017)

Biosensors can deliver the rapid bacterial detection that is needed in many fields including food safety, clinical diagnostics, biosafety and biosecurity. Whole-cell imprinted polymers have the potential to be applied as ...
Anticancer activities of manganese-based photoactivatable CO-releasing complexes (PhotoCORMs) with benzimidazole derivative ligands

Coskun, Kubra A.; Dusunceli, Serpil Demir; Ozdemir, Ismail; Ozgur, Aykut; Tutar, Yusuf; Ustun, Elvan (SPRINGER, VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS, 2017)

Carbon monoxide is an important signaling molecule which is produced by heme oxygenase-1. CO shows antiproliferative activity against cancer cells; hence, activation of HO-1 is a significant inhibition strategy against ...
Stereospecific synthesis of novel methyl-substituted mono- and di-methoxy conduritols

Kaplan, Dilek; Kelebekli, Latif (PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND, 2017)

Methyl-monomethoxy conduritol-B and methyl-dimethoxy conduritol-B were synthesized starting from 2-methylbenzo-1,4-quinone. Bromination of 2-methylbenzo-1,4-quinone was followed by the reduction of the carbonyl groups with ...
Synthesis and structural characterization of new oxovanadium(IV) complexes derived from azo-5-pyrazolone with prospective medical importance

Altuntas, Eylem; Bagdatli, Emine; Sayin, Ulku (ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2017)

Four novel o-hydroxy substituted aryl-(m H, -Cl, Br, CH3) azo-5-pyrazolone compounds (2a-d, respectively) were synthesized as azo-group containing ligands by diazotization of aryl amines then coupled with 1-(4-chlorophen ...
Statistical Modeling of Copper Adsorption on Van Pumice

Alkan, Salih; Demir, Canan; Keskin, Siddik; Kul, Ali Riza (ISER PUBLICATIONS, STE 124 CHALLENGE HOUSE 616 MITCHEM RD, CRO 3AA, CROYDON, LONDON, 00000, ENGLAND, 2017)

Copper (Cu) is an element which is essential for the living. In addition, copper is also one of the first metals used by humans and occurs naturally in nature. The aim of this study is to statistical modeling of copper ...
Practical synthesis of functionalized terminal alkynes, 3,3,3-triethoxypropyne and ketal protected prop-2-ynones

Eskici, Mustafa; Karanfil, Abdullah (TAYLOR & FRANCIS INC, 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA, 2017)

Practical and economical synthesis of synthetically valuable 3,3,3-triethoxypropyne, ketal protected phenyl and methyl substituents prop-2-ynones is described. Bromination and subsequent 18-crown-6 catalyzed elimination ...
Synthesis, in vitro DNA interactions, cytotoxicities, antioxidative activities, and topoisomerase inhibition potentials of Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) complexes with azo-oxime ligands

Aliyazicioglu, Yuksel; Ayvaz, Melekcol; Demir, Selim; Dural, Bayram; Karaoglu, Kaan; Serbest, Kerim; Turan, Ibrahim (SCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY-TUBITAK, ATATURK BULVARI NO 221, KAVAKLIDERE, TR-06100 ANKARA, TURKEY, 2017)

Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) transition metal complexes of 2-hydroxy-5-[(E)-(4-phenyl) diazenyl] benzaldehyde oxime and 2-hydroxy-5-[(E)-(4-nitrophenyl) diazenyl] benzaldehyde oxime ligands were synthesized ...
[Mn(CO)(3)(bpy)(N-2-chlorobenzylbenzimidazole)] OTf complex as a new photoactivatable CO-releasing molecule

Dusunceli, S. Demir; Ozdemir, I.; Ustun, E. (BULGARIAN ACAD SCIENCE, CENTRAL LIBRARY 7 NOEMVRI NO 1, SOFIA, 00000, BULGARIA, 2017)

Metal carbonyl complexes have been accepted major for storage and transportation of carbon monoxide which is an important gasotransmitter. We synthesized novel manganese(I) carbonyl complex with general formula [Mn(CO)(3)(bpy)L] ...

Now showing items 161-180 of 222

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