Papers by ELVAN HASANOĞLU
Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 2020
In this work, Ni(II) complexes with unsymmetric Schiff bases (NiL1, NiL2, NiL3, NiL4) were prepare... more In this work, Ni(II) complexes with unsymmetric Schiff bases (NiL1, NiL2, NiL3, NiL4) were prepared by a two-stage method reported by one of us recently for investigate antimutagenic properties. Sodium azide-induced antimutagenic effect in lymphocytes was determined by sister chromatid exchange (SCE) and micronucleus (MN) methods. It has been determined that the synthesized compounds have antimutagenic properties and reduce the mutagenicity caused by sodium azide (NaN3) which is used as a positive control.
Süleyman Demirel Üniversitesi Fen Edebiyat Fakültesi Fen Dergisi, 2019
Özet: Enzimler, pek çok endüstride kullanılan, maliyetleri oldukça yüksek olan önemli materyaller... more Özet: Enzimler, pek çok endüstride kullanılan, maliyetleri oldukça yüksek olan önemli materyallerdir. Katalitik tepkimelerde enzimler için şartlar uygun olsa bile yüksek sıcaklık, yüksek veya düşük pH ve organik/inorganik çözücülerin varlığında enzimler aktifliklerini kolaylıkla kaybedebilirler. İmmobilizasyon işlemi ile birlikte, enzimlerin ekonomik açıdan kullanılabilirliğini sağlamak mümkündür. Bu amaçla, (aminometil) polistiren (APS) kaynaklı nanokürelere glukoz oksidaz (GOx) enzimi immobilize edildi ve optimizasyon parametreleri (pH, sıcaklık, tekrar kullanım sayısı, depolama kararlılığı, substrat derişimi) belirlendi. Serbest ve immobilize enzim için Michaelis-Menten eşitliği ile Km ve Vmak değerleri hesaplandı. Özellikle Pt(IV) iyonu içeren immobilize enzimin substratına karşı yüksek ilgi gösterdiği tespit edildi. 12 ay sonunda immobilize enzimlerin yaklaşık % 85 aktifliklerini korudukları görüldü.
Polish Journal of Chemical Technology, 2017
Antimicrobial and antifungal polymers are gaining the attention of pharmaceutical makers and indu... more Antimicrobial and antifungal polymers are gaining the attention of pharmaceutical makers and industrial design. Nanospheres-Polymers attached Platinum(II) / (IV) complexes have been synthesized to investigate antimicrobial activities. Firstly, nanospheres involving Schiff bases were synthesized from (aminomethyl) polystyrene and four substitute salicylaldehyde (2-hydroxy benzaldehyde, 5-fluoro-2-hydroxy benzaldehyde, 5-kloro-2-hydroxy benzaldehyde, 5-bromo-2-hydroxy benzaldehyde). Secondly, polymers attached Platinum(II) / (IV) complexes have been prepared by means of template method. The IR spectra show that the ligands act in a monovalent bidentate fashion all nanospheres involving Schiff bases. Square-planar and octahedral structures are proposed for Pt(II) and Pt(IV), respectively. All these substances have been examined for antibacterial activity against pathogenic strains, and antifungal activity. In particular, Pt(IV) complexes were more potent bactericides than all of the sy...
Dalton Transactions, 2015
Pt(ii) and Pt(iv)-tagged nanoparticles have been synthesized according to the template method, fo... more Pt(ii) and Pt(iv)-tagged nanoparticles have been synthesized according to the template method, for the identification of pesticides .
Kırklareli Üniversitesi Mühendislik ve Fen Bilimleri Dergisi
In this work, WO3 nanoparticle decorated nanoparticle decorated magnetic poliamidoamin (PAMAM) de... more In this work, WO3 nanoparticle decorated nanoparticle decorated magnetic poliamidoamin (PAMAM) dendrimer nanocomposites were fabricated and used as a catalyser for the reduction of 4-nitrophenol (4-NP). Fe3O4 superparamagnetic iron oxide nanoparticles were used as magnetic core. Magnetic iron oxide nanoparticles were produced using hydrothermal synthesis. Magnetic nanoparticle core was covered with PAMAM dendrimers. The dendrimers used in the covering process was 2nd generation dendrimers which proposed to protect nanoparticles from losing their magnetic characteristics. PAMAM coated core@shell structure was decorated with WO3 nanoparticles where Fe3O4@G2/WO3 magnetic dendrimer composites were obtained. Structural characterization of magnetic dendrimers was performed using microscopic, spectroscopic and crystallographic methods where SEM, TEM, EDX, XRD methods were used. Vibrating sample magnetometry was used in the assessment of magnetic characteristics. Caraltytic performance of t...
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Papers by ELVAN HASANOĞLU