Browsing by Author "Şahiner, Nurettin"
Now showing items 1-20 of 27
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Alpha-Glucosidase Enzyme Immobilized Dextran-Co Metal Nanoparticle Cryogel Composite Systems as Dual Catalyst with Enhanced Stability and Catalytic Activity
Demirci, Şahin; Şahiner, Nurettin (John Wiley and Sons Inc, 2023)Here, dextran (Dex) cryogels were prepared and used for the immobilization of α-Glu enzyme via two different techniques of entrapment and covalent linking. The entrapment of α-Glu enzyme within Dex cryogels (α-GluE@Dex) ... -
Azot, fosfor ve kükürt içeren polimerik mikro ve nano partiküllerin sentezi ve çeşitli uygulamalarda kullanımları
Bütün Şengel, Sultan (Çanakkale Onsekiz Mart Üniversitesi, Lisansüstü Eğitim Enstitüsü, 2017)Yapılan tez çalışmasında, literatürde henüz yer almayan ve ticari olarak temin edilemeyen yapısında azot (N), fosfor (P), kükürt (S) ve bunların kombinasyonlarını içeren vinil/akrilat monomerleri sentezlenmiştir. Sentezlenen ... -
Biodiverse Properties of Tannic Acid-Based Fibers
Şahiner, Mehtap; Kurt, Saliha B.; Şahiner, Nurettin (Springer, 2021)Tannic acid (TA) is a plant-based polyphenolic molecule with enticing anti-oxidant, anti-bacterial, antiinflammatory and anti-cancer features, making it a valuable material in bio-medicinal applications. To establish whether ... -
Carbon Tetrafluoride, Oxygen, and Air RF Plasma Modified Low-Density Polyethylene and Polydimethylsiloxane
Polat, Osman; Bhethanabotla, Venkat R.; Ayyala, Ramesh S.; Şahiner, Nurettin (Springer, 2023)Low-density polyethylene (LDPE) and polydimethylsiloxane (silicone or PDMS) were exposed to low-pressure air, oxygen (O2), and carbon tetrafluoride (CF4) plasma to modify their surfaces. Plasma power and irradiation time ... -
Chemically Cross-Linked Poly(β-Cyclodextrin) Particles as Promising Drug Delivery Materials
Demirci, Şahin; Khiev, Dawin; Can, Mehmet; Şahiner, Mehtap; Biswal, Manas R.; Ayyala, Ramesh S.; Şahiner, Nurettin (Amer Chemical Soc, 2021)One-pot synthesis of poly(β-cyclodextrin) (p(β-CD)) micro-/nanoparticles was accomplished using two different cross-linkers, divinyl sulfone (DVS) as p(β-CD)-1 and trimethylolpropane glycidyl ether (TMPGDE) as p(β-CD)-2. ... -
Chondroitin Sulfate-Based Cryogels for Biomedical Applications
Demirci, Şahin; Şahiner, Mehtap; Ari, Betül; Sunol, Aydın K.; Şahiner, Nurettin (MDPI, 2021)Cryogels attained from natural materials offer exceptional properties in applications such as tissue engineering. Moreover, Halloysite Nanotubes (HNT) at 1:0.5 weight ratio were embedded into CS cryogels to render additional ... -
Değişik Boyalar Yüklenmiş p(AMPS) Hidrojellerinin Optik Özelliklerinin ve Elektriksel İletkenliklerinin İncelenmesi
Demirci, Şahin; Şahiner, Nurettin; Sel, Kıvanç (Çanakkale Onsekiz Mart Üniversitesi, 2018-05)Bu çalışmada, öncelikle poli(2-akrilamido-2-metilpropan sülfonik asit) (p(AMPS)) türü hidrojeller sentezlenmiş ve sonrasında giemsa stain (GS), methylene blue (MB) ve rhodamin 6G (R6G) boya maddeleri ile yüklenmiştir. ... -
The effect of sulphur on the antibacterial properties of succinic acid-Cu(II) and mercaptosuccinic acid-Cu(II) MOFs
Gizer, Süleyman Görkem; Şahiner, Nurettin (Elsevier B.V., 2021)Microorganism such as bacteria, virus and fungi are causing significant health problems. Here, using succinic acid (SA) and mercaptosuccinic acid (MSA) as organic ligand and Cu(II) ions as complexing agent SA-Cu(II) and ... -
HA particles as resourceful cancer, steroidal and antibiotic drug delivery device with sustainable and multiple drug release capability
Şahiner, Nurettin; Suner, Selin S.; Kurt, Saliha B.; Can, Mehmet; Ayyala, Ramesh S. (Taylor & Francis Group, LLC, 2021)Hyaluronic acid (HA) particles with divinyl sulfone (DVS) crosslinking at 10% mole ratio (HA macromolecule repeating units) were prepared and demonstrated as versatile drug carriers with sustainable and long-term release ... -
Improved Biomedical Properties of Polydopamine-Coated Carbon Nanotubes
Demirci, Şahin; Şahiner, Mehtap; Sağbaş Suner, Selin; Şahiner, Nurettin (MDPI, 2021)Carbon nanotubes (CNTs) due to their outstanding mechanical, thermal, chemical, and optical properties were utilized as a base material and were coated with polydopamine (PDA) (PDA@CNT) via the simple self-polymerization ... -
One step synthesis of an amino acid derived particles, poly(L-Arginine) and its biomedical application
Şahiner, Nurettin (John Wiley and Sons Ltd, 2022)Herein, single step synthesis of poly(L-Arginine) (p(L-Arg)) particles was reported for the first time via microemulsion crosslinking method using tetrakis(hydroxymethyl) phosphonium chloride (THPC) as the crosslinking ... -
PEI modified natural sands of Florida as catalysts for hydrogen production from sodium borohydride dehydrogenation in methanol
Inger, Erk; Demirci, Şahin; Can, Mehmet; Sunol, Aydin K.; Philippidis, George; Şahiner, Nurettin (John Wiley and Sons Ltd, 2021)Sand samples from Tampa (T) and Panama (P) City beaches in Florida were used as catalysts for dehydrogenation of NaBH4 in methanol. T and P sand samples were sieved to [removed]500 μm sizes, and the smallest fractions ... -
PEI-M [M:Cu(II) and Co(II)] hydrogel catalyst for methyl orange degradation and epinephrine oxidation
Ghorbanloo, Massomeh; Demirci, Şahin; Şahiner, Nurettin (Çanakkale Onsekiz Mart Üniversitesi, 2015)Here, we report the catalytic activity of catalyst derived from polyethylene imine-M (II) (PEI-M: Cu(II), and Co(II)) hydrogel composite in the presence of H2O2 as an oxidant. The PEI-Cu(II)/H2O2 heterogeneous composite ... -
Poly(2-aminoethyl methacrylate) based microgels catalyst system to be used in hydrolysis and methanolysis of NaBH4 for H2 generation
Demirci, Şahin; Sutekin, S. Duygu; Güven, Olgun; Şahiner, Nurettin (Elsevier Ltd, 2023)The poly(2-aminoethyl methacrylate) (p(AEM)) microgels were synthesized by microemulsion polymerization technique and used for in situ metal nanoparticle preparation to render as p(AEM)-M (M: Co or Ni) microgel composites ... -
Poly(vinyl alcohol)-tannic Acid Cryogel Matrix as Antioxidant and Antibacterial Material
Arı, Betül; Şahiner, Mehtap; Demirci, Şahin; Şahiner, Nurettin (MDPI (Multidisciplinary Digital Publishing Institute), 2022)The biocompatible, viscoelastic properties of poly(vinyl alcohol) (PVA) in combination with the antimicrobial and antioxidant natural polyphenolic, tannic acid (TA), and the natural flavonoid and antioxidant curcumin ... -
Poly(Vinylamine) Derived N-Doped C-Dots with Antimicrobial and Antibiofilm Activities
Sutekin, Semiha Duygu; Şahiner, Mehtap; Suner, Selin Sağbaş; Demirci, Şahin; Güven, Olgun; Şahiner, Nurettin (MDPI (Multidisciplinary Digital Publishing Institute), 2021)Nitrogen-doped carbon dots (N-doped C-dots) was synthesized by using poly(vinyl amine) (PVAm) as a nitrogen source and citric acid (CA) as a carbon source via the hydrothermal method. Various weight ratios of CA and PVAm ... -
A polyphenolic biomacromolecule prepared from a flavonoid: Catechin as degradable microparticles
Sağbaş Suner, Selin; Mohapatra, Subhra; Ayyala, Ramesh S.; Brethanabotla, Venkat R.; Şahiner, Nurettin (Wiley, 2021)Catechin (CAT) was crosslinked with trimethylolpropane triglycidyl ether(TMPTGE) to obtain degradable poly(CAT) particles in a single step. Sphericalp(CAT) particles with tens of micrometer size range and an isoelectronic ... -
Removal of Cd(II), Co(II), Cr(III), Ni(II), Pb(II) and Zn(II) ions from wastewater using polyethyleneimine (PEI) cryogels
Bağdat, Sema; Tokay, Feyzullah; Demirci, Şahin; Yılmaz, Selehattin; Şahiner, Nurettin (Academic Press, 2023)The removal of the target analytes, Cd(II), Co(II), Cr(III), Ni(II), Pb(II), and Zn(II) from contaminated waters was achieved using super porous polyethyleneimine (PEI) cryogels as adsorbent. The optimum values of the ... -
Rod-like L-Aspartic acid-Cu(II) metal organic frameworks; Synthesis, characterization and biomedical properties
Gizer, Görkem; Şahiner, Mehtap; Yıldırım, Yıldız; Demirci, Şahin; Can, Mehmet; Şahiner, Nurettin (Elsevier B.V., 2021)L-aspartic acid (L-AA) based MOFs were prepared from acetate, chloride, nitrate, and sulfate salts of Cu(II) ions as L-AA-Cu(II)-A,-C,-N,-S, respectively with 96.7 2.4, 89.8 3.1, 92.1 1.5, 74.6 5.2 m2/g, surface ... -
Self-Crosslinked Ellipsoidal Poly(Tannic Acid) Particles for Bio-Medical Applications
Şahiner, Nurettin (MDPI AG, 2021)Self-crosslinking of Tannic acid (TA) was accomplished to obtain poly(tannic acid) (p(TA)) particles in single step, surfactant free media using sodium periodate (NaIO4 ) as an oxidizing agent. Almost monodisperse p(TA) ...
