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Öğe Eco-Friendly Synthesis and Characterization of Reduced Graphene Oxide(Iop Publishing Ltd, 2017) Ickecan, D.; Zan, R.; Nezir, S.Graphene is a single sheet of sp(2) bonded carbon having a two-dimensional (2D) layer. It has remarkable electronic, mechanical and thermal properties. In this paper, the graphene oxide (GO) was reduced by reducing chemicals such as ascorbic acid and hydrazine and then characterized by transmission electron microscopy (TEM), Raman spectroscopy and Fourier transform infrared spectroscopy. TEM results of the chemically reduced graphene were showed that the structure consists of a mixture of single and few layers of reduced graphene oxide (rGO).Öğe ICG-conjugated magnetic graphene xxide for dual photothermal and photodynamic therapy(Lippincott Williams & Wilkins, 2015) Ocsoy, Ismail; Isiklan, Nuran; Cansiz, Sena; Ozdemir, Nalan; Tan, Weihong…Öğe ORGN 188-A new method for the synthesis of racemic and chiral aziridine 2-phosphonates(Amer Chemical Soc, 2009) Doğan, Özdemir; Bulut, Adnan; Aslan, Ayhan; Tan, Serkan; Babiz, Hakan…Öğe ORGN 90-A new phosphorous based chiral catalyst for the catalytic asymmetric synthesis of pyrrolidines via 1,3-dipolar cycloadditions of azomethine ylides(Amer Chemical Soc, 2009) Doğan, Özdemir; Eroksuz, Serap; Garner, Philip P.; Bulut, Adnan…Öğe Investigation of the microstructure of metal catalyzed cyclopentene co-norbornene polymers by spectral methods(Springer, 2007) Cetinkaya, Sevil; Karabulut, Solmaz; Imamoglu, YavuzFor the first time, cyclopentene (CPE) has been copolymerized with the strained cycloolefin norbornene (NBE) using catalytic amounts of the electrochemically prepared metathesis catalyst. The microstructure of polymers was determined by H-1 NMR and C-13 NMR spectroscopy. The polymers were also characterized by differential scanning calorimetry and gel permeation chromatography (GPC) techniques.Öğe Supporting ruthenium initiator on PolyHIPE(Elsevier Science Bv, 2006) Çetinkaya, Sevil; Khosravi, Ezat; Thompson, RichardPolyHIPE samples were successfully synthesised using divinylbenzene and styrene as polymerisable continuous phase, aqueous phase containing potassium persulphate and calcium chloride dihydrate, a mixture of emulsifiers (SPAN20, CTAB and DDBSS) and toluene as a porogen. The PolyHIPE samples 1 and 2 and the PolyHIPE sample 3 were designed to be 90 and 92% porous, respectively, based on the aqueous phase content. PolyHIPE samples were found to be porous and open-cell microstructures with the surface area of 370-430 m(2) g(-1). Alkylidene exchange reactions were carried out between the double bonds of the PolyHIPE and the ruthenium initiator, Ru(=CHPh)(PCy3)(2)Cl-2, for the attachment of the initiator. The amount of initiator loading was determined by phosphorous analysis and for the first time by Rutherford backscattering (RBS) analysis. The loading of the initiator on the PolyHIPE samples, based on phosphorous analysis, was found to be 0.09-0.19 mmol/g. The RBS analysis showed the level of initiator loading to be 0.053-0.097 mmol/g. The level of initiator loading obtained from the phosphorous and the RBS analysis is higher than 0.035 mmol/g reported previously for ruthenium initiator supported on crosslinked polystyrene. However, the level of initiator loading obtained from RBS analysis is lower than that obtained from the phosphorous analysis by ICP-OES. The reason for this discrepancy is believed to be due to inaccuracy of phosphorous analysis as the result of the insolubility of the PolyHIPE supported initiator. (c) 2006 Elsevier B.V. All rights reserved.Öğe Catalytic asymmetric 1,3-dipolar cycloadditions of azomethine yllides using chiral ferrocenyl substituted aziridinylmethanol (Fam)-zinc complexes(Amer Chemical Soc, 2005) Doğan, Özdemir; Garner, P.; Koyuncu, H.; Bulut, A.…
