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TEMEL, BİNNUR

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BİNNUR
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TEMEL
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Now showing 1 - 10 of 55
  • PublicationMetadata only
    Genetic disruption of nucleoside transporter 4 reveals its critical roles in malaria parasite sporozoite functions.
    (2022-08-24T00:00:00Z) Deveci, GÖZDE; Kamil, Mohd; Kina, Umit; Temel, Binnur Aydogan; Aly, Ahmed S I; DEVECİ, GÖZDE; KAMIL, MOHD; KINA, ÜMİT YAŞAR; TEMEL, BİNNUR
  • PublicationMetadata only
    Thermally curable main-chain benzoxazine prepolymers via polycondensation route
    (2013-02-01T00:00:00Z) Demir, Kubra Dogan; Kışkan, Barış; Aydogan, BİNNUR; Yağcı, Yusuf; TEMEL, BİNNUR
    Polybenzoxazines are addition-cure thermosetting polymers exhibiting versatility in a wide range of applications due to their good mechanical properties, dimensional stability, chemical resistivity, flame resistance property phenolic or epoxy resins have myriad applications in diverse fields starting from commodity materials to high technology aerospace industries. In this paper, we present synthetic strategies to incorporate thermally curable benzoxazine functionality into polymers as main-chain fashion in order to further improve various properties. The strategies successfully employed including monomer synthesis and polycondensation routes like Mannich reaction, click chemistry, hydrosilylations, and coupling reactions. The structure-property relationships of the cured materials have also been presented and discussed. (C) 2012 Elsevier Ltd. All rights reserved.
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    Pluronic Based Injectable Smart Gels with Coumarin Functional Amphiphilic Copolymers
    (2022-06-01T00:00:00Z) Alemdar, Mahinur; Tuncaboylu, Deniz Ceylan; Batu, Hatice Kubra; Temel, Binnur; TUNCABOYLU, DENIZ CEYLAN; TEMEL, BİNNUR
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    Single-Chain Folding Nanoparticles as Carbon Nanotube Catchers
    (2018-12-15T00:00:00Z) BİLGİ, Mesut; Balta, Demet Karaca; Temel, Binnur Aydogan; Temel, Gokhan; TEMEL, BİNNUR
    This contribution describes a simple method for preparing polymeric nanoparticles using photodimerization of anthracene moieties on the side chain of terpolymers in dilute regime and transformation of obtained polymeric nanoparticles into pyrene functional nanoparticles via Menschutkin quaternization procedure. Subsequently, pyrene possessing polymeric nanoparticles are attached onto multiwalled carbon nanotube (MWCNT) surfaces by pi-pi stacking strategy. Gel permeation chromatography, thermal gravimetric analysis, ultraviolet-visible, and fluorescence spectroscopies are used to analyze modified nanoparticles and their precursors. Electron microscopy and dispersion studies show that pyrene-modified polymeric nanoparticles are able to interconnect various CNTs. (c) 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 2709-2714
  • PublicationMetadata only
    Photoinduced Electron Transfer Reactions of Highly Conjugated Thiophenes for Initiation of Cationic Polymerization and Conjugated Polymer Formation
    (2012-10-09T00:00:00Z) Aydogan, BİNNUR; Yağcı, Yusuf; Toppare, Levent; Jockusch, Steffen; Turro, Nicholas J.; TEMEL, BİNNUR
    Photoinduced electron transfer reactions of highly conjugated thiophene derivatives, 4,7-di(2,3-dihydrothieno[3,4-b] [1,4]dioxin-5-yl)benzo[1,2,5]thiadiazole (DTDT) and 5,8-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-2,3-di(thiophen-2-yl)quinoxaline (DTDQ), with diphenyl-iodonium hexafluorophosphate (Ph2I+PF6-) and triphenylsulfonium hexafluorophosphate (Ph3S+PF6-) were investigated by laser flash photolysis, fluorescence and phosphorescence spectroscopy, and polymerization studies. High fluorescence quantum yields, long fluorescence lifetimes (similar to 10 ns in aprotic solvents), and absence of detectable phosphorescence at 77 K for both compounds indicate inefficient intersystem crossing into the triplet state and dominant role of singlet excited state. Photolysis of DTDT or DTDQ in the presence of iodonium salt with visible light results in the formation of radical cations of DTDT and DTDQ as detected by laser flash photolysis. Sulfonium salts do not undergo such electron transfer reactions due to the unfavorable redox potentials. The importance of the described photoinduced electron transfer process with respect to the initiation of cationic polymerization and formation of conjugated polymers was demonstrated.
  • PublicationMetadata only
    Long wavelength photoinitiated free radical polymerization using conjugated thiophene derivatives in the presence of onium salts
    (2011-01-01T00:00:00Z) Beyazit, Selim; Aydogan, BİNNUR; Osken, Ipek; Öztürk, Turan; Yağcı, Yusuf; TEMEL, BİNNUR
    Long wavelength free radical photopolymerization of (meth) acrylic monomers using a conjugated thiophene derivative, namely 3,5-diphenyldithieno[3,2-b: 2-,3--d]-thiophene (DDT) and one of the following compounds, namely diphenyliodonium hexafluorophosphate (Ph(2)I(+)PF(6)(-)), triphenylsulfonium hexafluorophosphate (Ph(3)S(+)PF(6)(-)) and N-ethoxy-2-methylpyridinium hexafluorophosphate (EMP(+)PF(6)(-)), as photosensitizer and coinitiator, respectively, was described. Polymerization occurred only when DDT, in the presence of the onium salts, was irradiated at wavelengths where the salts have no absorption. A feasible initiation mechanism involves intermolecular electron transfer from photoexcited thiophene compound to the onium salt. The relative initiation efficiencies of the salts were investigated and evaluated in terms of their redox potentials.
  • PublicationMetadata only
    Single Dose Mixed Species Malaria Vaccination of Genetically Attenuated Blood Stage Malaria Parasites Induce Sterile Immunity Against Lethal Challenge by Both Species
    (2021-09-13T00:00:00Z) Deveci, Gözde; Temel, Binnur; Aly, Ahmed Sayed Ibrahım; DEVECİ, GÖZDE; TEMEL, BİNNUR; ALY, AHMED SAYED IBRAHıM
  • PublicationMetadata only
    Covalent Immobilization of Furanone Derivatives for the Inhibition of Biofilm Formation on Implant Surfaces
    (2018-04-01) Yelboğa, Emrah; TEMEL, BİNNUR; Karagüler, Nevin Gül; Tüter, Melek; TEMEL, BİNNUR
  • PublicationMetadata only
    Bir Üniversitenin Girişimsel Olmayan Araştırmalar Etik Kuruluna Yapılan Başvurularda Eksiklikler ve Sıklıkla Yapılan Hatalar
    (2019-08-01) Meral, İsmail; Aştı, Türkinaz; Soysal, Ömer; Yıldırım, Nuran; Özçelik, Semra; Aydın, Teoman; Akbaş, Fahri; Temel, Binnur; Özder, Aclan; Büyükpınarbaşılı, Nur; Dönmez, Nazmiye; Alkaya, Mustafa Fırat; MERAL, İSMAİL; AŞTI, TÜRKINAZ; SOYSAL, ÖMER; YILDIRIM, NURAN; ÖZÇELİK, SEMRA; AYDIN, TEOMAN; AKBAŞ, FAHRİ; TEMEL, BİNNUR; ÖZDER, ACLAN; BÜYÜKPINARBAŞILI, NUR; DÖNMEZ, NAZMİYE
    Girişimsel olmayan araştırmalarda, ilgili etik kurulun onayını almadan çalışmalara başlamak mümkün değildir. Dünya Sağlık Örgütü-nün kurallarına göre, gerekli tüm belgeleri içeren başvuru dosyası ilgili Etik Kurula eksiksiz sunulmalıdır. Araştırmacıların başvuru dosyasındaki belgeleri eksiksiz tamamlamadaki isteksizliği, Etik Kurulların çalışma sürecini yavaşlatmakta ve hatta Etik Kurul ile araştırmacılar arasında tartışmaya bile neden olabilmektedir. Bu nedenle bu çalışma, bir üniversitenin Girişimsel Olmayan Araştırmalar Etik Kuruluna gönderilen proje başvuru dosyalarındaki eksiklikleri ve en çok yapılan hataları göstermek ve araştırmacılar için bir rehber oluşturmak amacıyla yapıldı. 24 Mart 2016 ve 30 Haziran 2018 tarihleri arasında Girişimsel Olmayan Araştırmalar Etik Kurula gönderilen başvuru dosyaları ve kararları ilgili etik kurulun veri tabanından analiz edildi. Başvuru dosyalarının revizyonuna neden olan en önemli gerekçeler, projenin amacının ilgili referanslar eşliğinde yeterince açıklanamaması ve özellikle iyi yazılamamış yöntem kısmı gibi başvuru formundaki eksikliklerdi. Araştırmacıları proje başvuru dosyası hazırlarken en çok yapılan hatalar hakkında eğitmek, Üniversite Etik Kurullarının gözden geçirme sürecinin verimliliğini ve hızını artıracaktır.