Emirdağ Eanes, Mehtap
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Emirdağ-Eanes, M.
Eanes, Mehtap
Eanes, Mehtap E.
Emirdag-Eanes, M
Emirdag-Eanes, M.
Emirdağ-Eanes, M
Emirdag Eanes, Mehtap
Emirdag-Eanes, Mehtap
Emirdağ-Eanes, Mehtap
Emirdag, Mehtap
Emirdağ, Mehtap
Eanes, Mehtap
Eanes, Mehtap E.
Emirdag-Eanes, M
Emirdag-Eanes, M.
Emirdağ-Eanes, M
Emirdag Eanes, Mehtap
Emirdag-Eanes, Mehtap
Emirdağ-Eanes, Mehtap
Emirdag, Mehtap
Emirdağ, Mehtap
Job Title
Email Address
mehtapemirdag@iyte.edu.tr
Main Affiliation
04.01. Department of Chemistry
Status
Current Staff
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3GOOD HEALTH AND WELL-BEING
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4QUALITY EDUCATION
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6CLEAN WATER AND SANITATION
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7AFFORDABLE AND CLEAN ENERGY
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8DECENT WORK AND ECONOMIC GROWTH
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9INDUSTRY, INNOVATION AND INFRASTRUCTURE
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Documents
26
Citations
239
h-index
10
This researcher does not have a WoS ID.
Scholarly Output
29
Articles
17
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19723/12115
Supervised MSc Theses
10
Supervised PhD Theses
2
WoS Citation Count
116
Scopus Citation Count
106
Patents
0
Projects
11
WoS Citations per Publication
4.00
Scopus Citations per Publication
3.66
Open Access Source
24
Supervised Theses
12
| Journal | Count |
|---|---|
| Zeitschrift fur Kristallographie - New Crystal Structures | 3 |
| Journal of Alloys and Compounds | 3 |
| Acta Crystallographica Section E: Structure Reports Online | 1 |
| Crystals | 1 |
| Inorganica Chimica Acta | 1 |
Current Page: 1 / 3
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29 results
Scholarly Output Search Results
Now showing 1 - 10 of 29
Article A Two-Dimensional Organic–inorganic Hybrid Compound, Poly[(ethylenediamine)tri-Μ(International Union of Crystallography, 2008) Gün, Özgül; Emirdağ Eanes, Mehtap; Vanderveer, Don; Eanes, MehtapA new organic–inorganic two-dimensional hybrid compound, [CuMoO4(C2H8N2)], has been hydrothermally synthesized at 443 K. The unit cell contains layers composed of CuN2O4 octahedra and MoO4 tetrahedra. Corner-sharing MoO4 and CuN2O4 polyhedra form CuMoO4 bimetallic sites that are joined together through O atoms, forming an edge-sharing Cu2Mo2O4 chain along the c axis. The one-dimensional chains are further linked through bridging O atoms that join the Cu and Mo atoms into respective chains along the b axis, thus establishing layers in the bc plane. The ethylenediamine ligand is coordinated to the Cu atom through its two N atoms and is oriented perpendicularly to the two-dimensional –Cu—O— Mo– layers. The average distance between adjacent layers, as calculated by consideration of the closest and furthest distances between two layers, is 8.7 Å. The oxidation statesof the Mo and Cu atoms of VI and II, respectively, were confirmed by bond-valence sum calculations.Master Thesis Hydrothermal Synthesis and Characterization of Tungsten Oxide Containing Organic-Inorganic Hybrid Material(Izmir Institute of Technology, 2019) Chilufya, Langson; Emirdağ Eanes, Mehtap; Eanes, MehtapImportance and a wide area of applications of solid-state oxides are well known. Metal oxides crystallize in wide variety but simple structures. Lately general opinion is that piezoelectric, ferromagnetic and catalytic properties of simple oxide structures will be improved if the metal oxides could have more complicated and detailed crystal structures. Therefore, research interest increased towards synthesizing complicated crystal structures. One of the methods to increase the complexity of the structure is the modification of inorganic oxides with organic ligands to synthesize complex hybrid materials. There are a great number of organic-inorganic hybrid materials with Keggin or Lindqvist Polyoxometalates structure containing Molybdenum and Tungsten. Usually Obtaining multifunctional hybrid materials, mostly requires grafting an organic functionalized group into the lacunary Keggin structures [XM11O39](n+4)-. Only Tungsten containing polyoxometalates can form a stable lacunary Keggin structures. A Lindqvist structures [M6O19]2- can also self-assemble with organic dyes to form a stable hybrid materials which have important applications. These polyoxotungstates, as an inorganic building blocks, were combined with organic compounds to obtain organic-inorganic hybrid materials. The carboxylic acid functionalized organotin grafted lacunary Keggin structure was coupled with different amines using N, N’-dicyclohexylcarbodiimide (DCC). Another hybrid material was formed by the association of the Lindqvist POM with phosphine based BODIPY derivative dye. The synthesized compounds were all characterized by SEM, FT-IR, TGA and Powder XRD. Since one of the organic moiety use was a BODIPY-type organic dye, the fluorescence properties of these newly synthesized compounds were investigated.Article Citation - WoS: 4Citation - Scopus: 5Crystal Structure of Distrontium Manganese (iii) Tetraoxophosphate Heptaoxodiphosphate, Sr2mn[po4] [p2o 7](Walter de Gruyter GmbH, 2007) Doğan, Leyla; Eanes, MehtapMnO11P3Sr2, monoclinic, P121/c1 (no. 14), a = 6.641(1) Å, b = 6.834(1) Å, c = 19.554(4) Å, β = 99.22(3)°, V = 876.0 Å3, Z = 4, Rgt(F) = 0.051, wRref(F2) = 0.090, T = 298 K.Master Thesis Hydrothermal Synthesis and Characterization of Single Crystalline Ceo2 Nanoparticles for Catalytic Applications(Izmir Institute of Technology, 2012) Meşin, Taylan; Eanes, MehtapSingle crystalline cerium oxide nanoparticles were synthesized with hydrothermal method by mixing cerium nitrate[Ce(NO3)3.6H2O] aqueous solution with alkali bases CsOH and RbOH. SEM, TEM and XRD characterization methods were used in order to identify morphology. First part of the study includes the work on effect of hydrothermal parameters, such as reaction temperature, reaction time, alkali base type and concentration on particle size and morphology. It was prooved that the size of ceria nanoparticles is directly proportional with the reaction time. The reaction temperature is also an important parameter that effect the morphology of nanoparticles. At 120 oC nanoparticles form rod like structure and as time goes they start to form cubic crystals. When the alkali base and concentration was changed the results showed that higher base concentration favors the particles to form bigger structures than that of lower concentrations. In addition, optical properties of CeO2 nanoparticles were studied by using the UV-Vis and Fluorescence Spectrometry. UV-Vis Spectroscopy results show that particle size of CeO2 nanoparticles synthesized in the presence of 8M RbOH are larger than that of synthesized in presence of 8M CsOH. When the reaction time decreases the Ce3+ defect increases based on the results of Fluorescence Spectrometry results. Second part of the study includes catalytic property of CeO2 nanoparticles. Ceria nanoparticles were used as catalyst in the synthesis of flavone from 2’-hydroxychalcone. Several reaction parameters were studied in order to achieve the flavone synthesis. TLC, GC, GC-MS and NMR were used in order to monitor the results of the reactios.Doctoral Thesis Characterization and Catalytic Applications of Hydrothermally Synthesized Poyoxotungstate Clusters Containing Organic-Inorganic Hybrid Materials(Izmir Institute of Technology, 2019) Ece, Özlem; Eanes, Mehtap; Çağır, AliMany scientists have been interested in hydrothermal synthesis and characterization of polyoxometalate clusters containing organic-inorganic hybrid materials recently because of having different applications in lots of fields, especially, using as catalysis in chemical reactions. In this study, three novel polyoxotungstate clusters were synthesized using hydrothermal method and catalytic activities of these three novel polyoxometalates and in addition two crystals previously synthesized in our group were studied. The first compound, [(4,4’-bpyH2)3][PCuW11O39] yellow crystals, crystallize in the space group P2(1)/n of the monoclinic system with four formula units in a cell. The crystal is a Keggin polyoxometalate and includes free 4,4’-bipyridine groups between the clusters. The second compound, (4,4’-bpyH2)[H2PW12O40]2.H2O colorless crystals, crystallize in the space group Ia-3 of the cubic system with twelve formula units in a cell. The crystal is a Keggin polyoxometalate and consists of two polyoxotungstate clusters, a free 4,4’-bipyridine group and a water molecule. The third and the last novel compound, (4,4’-bpyH2)4[H2P2W18O62]2 dark yellow crystals, crystallize in the space group P-1 of the triclinic system with four formula units in a cell. The crystal is a Wells-Dawson polyoxometalate and contains two polyoxotungstate clusters and free 4,4’-bipyridine groups between clusters. The catalytic study has been carried out using starch hydrolysis reactions by using hydrothermal synthesis and five different crystals were tried and conversion results were obtained. Starch samples converted to D-glucose with glucose yields above 90 wt.%. Catalyst reusability was performed for each crystal. No appreciable loss was observed in activity after five reaction cycles for each crystal.Article Citation - WoS: 7Citation - Scopus: 7Hydrothermal Synthesis of New Rare Earth Silicate Fluorides: a Novel Class of Polar Materials(Academic Press Inc., 2012) McMillen, Colin D.; Eanes, Mehtap; Stritzinger, Jared T.; Kolis, Joseph K.Polar crystals provide an interesting avenue for materials research both in the structures they form and the properties they possess. This work describes the hydrothermal synthesis and structural characterization of three novel silicate fluorides. Compound (1), LiY 3(SiO 4) 2F 2 crystallizes in space group C2/c, with a=17.651(4) Å, b=4.8868(10) Å, c=11.625(2) Å and β=131.13(3)°. BaY 2(Si 2O 7)F 2 (2) crystallizes in space group P-1, with a=5.1576(10) Å, b=6.8389(14) Å, c=11.786(2) Å, α=93.02(3)°, β=102.05(3)° and γ=111.55(3) °. Finally, the structure of Ba 2Y 3(SiO 4) 2F 5 (3) was determined in the polar orthorhombic space group Pba2, having unit cell parameters a=8.8864(18) Å, b=12.764(3) Å and c=5.0843(10) Å. The structures are compared based on their building blocks and long range polarities. Aligned silicate tetrahedra segregated into a single layer in (3) impart the observed polarity.Master Thesis Hydrothermal Synthesis and Characterization of Vanadium and Tungsten Oxide Containing Organic-Inoganic Hynrid Material(Izmir Institute of Technology, 2011) Önen, Banu; Eanes, MehtapHydrothermal synthesis of transition metal oxide containing organic-inorganic hybrid materials has attracted great attention recently. Two novel organic-inorganic hybrid materials (4,4’-bipy)3[HPW12O39] and [Cu(4,4’-bipy)4][HPW12O40] were hydrothermally synthesized as green and purple crystals respectively, from the reaction of Na6[H2W12O40], CuCl2.2H2O, 4,4’- bipyridine and H3PO4 in a 23 ml autoclave at 170°C for 72 hours. The compound (4,4’- bipy)3[HPW12O39] crystallizes in the space group P21/n of the monoclinic system with four formula units in a cell with dimensions a = 13.503(3) Å, b = 26.726(5) Å, c = 15.169(3) Å and V = 5397.3(19) Å 3 . [Cu(4,4’-bipy)4][HPW12O40] crystallizes in the space group Pbcn of the tetragonal system with eight formula units in a cell of dimensions a = 20.236(4) Å, b = 25.635(5) Å, c = 20.236(4) Å; V = 10497(4) Å 3 . Both of the compounds are Keggin polyoxometalate structures. (4,4’-bipy)3[HPW12O39] contains free 4,4’-bipy groups among the clusters while in [Cu(4,4’-bipy)4][HPW12O40] 4,4’-bipy ligands are coordinated to Cu 2+ ions. A novel compound (H2NC4H8NH2)[(VO)2(PO4)2] was synthesized hydrothermally from the reaction of NaVO3, V2O5, ethylenediamine and H3PO4 at 170°C for 72 hours. The compound crystallizes in the space group P-1 of the trigonal system with five formula units in a cell of dimensions a= 6.3345(13) Å, b= 6.3353(13) Å, c= 15.940(3) Å, V=639.6(2) Å 3 . (H2NC4H8NH2)[(VO)2(PO4)2] displays a layered structure with protonated piperazine groups between layers. In addition to the novel compounds, several known compounds were synthesized as well. Blue crystals of (VO)(H2PO4)2 were obtained hydrothermally from the reaction of NaVO3, ethylenediamine and H3PO4 at 170°C for 72 hours. (C5NH6)4.5(H3O)1.5[P2W18O62] , a known compound also, was synthesized from the reaction of Na2WO4 .2H2O, CuCl2.2H2O, pyridine and H3PO4 at 170°C for 72 hoursArticle Citation - WoS: 1Citation - Scopus: 1Hydrothermal Synthesis, Characterization and Catalytic Activities of a Keggin Structure of (4,4′-Bpyh2)3[pw12o40]2•3h2o and a Wells-Dawson Structure of (4,4′-Bpyh2)3(4,4′(Elsevier, 2025) Ece, Ozlem; Chilufya, Langson; McMillen, Colin D.; Emirdag-Eanes, MehtapTwo novel polyoxometalates composed of heteropolytungstates, (4,4 '-bpyH2)3[PW12O40]2 center dot 3H2O (1) and (4,4 '- bpyH2)3(4,4 '-bpyH)1.75[Cu(bpy)2]0.25[H2P2W18O62]2 (2) have been synthesized under hydrothermal conditions and characterized by single crystal X-ray diffraction and TGA methods. Compound 1 crystallizes in the cubic space group Ia-3with a = 25.9356(12) angstrom, b = 25.936(3) angstrom, c = 25.936(3) angstrom, alpha = 90.00, (3= 90.00, gamma= 90.00 and Z = 8, and compound 2 crystallizes in the triclinic space group P-1with a = 13.5194(17) angstrom, b = 22.400(3) angstrom, c = 27.374(4) angstrom, alpha = 79.833(3), (3= 77.439(3), gamma= 80.213(4) and Z = 2. In addition to structural characterization, the catalytic activities of 1 and 2 were determined in hydrolysis reactions. In the catalytic study, starch hydrolysis reactions were performed by using hydrothermal synthesis, and starch was hydrolyzed successfully at 150 degrees C, 5 h, based on the results of Lugol's test, which highest conversion yields above 90 wt.% under optimum reaction conditions. FT-IR analysis and catalyst reusability tests were also performed for each compound. No appreciable loss was observed in activity after five reaction cycles.Article Citation - WoS: 20Synthesis, Structural Characterization, and Magnetic Properties of Nare9(geo4)(6)o-2 (re=nd, Pr)(Elsevier Ltd., 2004) Eanes, Mehtap; Pennington, WT; Kolis, JWThe new compounds NaRE9(GeO4)(6)O-2 (RE = Nd, Pr) have been synthesized at 500 and 524 degreesC, respectively, via the hydrothermal method. The compounds crystallize with an oxyapatite structure in the hexagonal space group P6(3)/m with one formula unit in a cell of dimensions a = 9.782(1) Angstrom, c = 7.083(1) Angstrom (T = 293 K), V = 587.0(2) Angstrom(3) for RE = Nd and a = 9.802(1) Angstrom, c = 7.116(1) Angstrom (T = 293 K), V = 592.1(2) Angstrom(3) for RE = Pr. Each structure is composed of REO7 and REO9 polyhedra as well as GeO4 tetrahedra. The magnetic susceptibility data indicates paramagnetic behavior for both compounds at temperatures between 60-300 K for Nd and 2-300 K for Pr with a Weiss constant of theta = 44.8 and 33.5 K for Nd and Pr, respectively. (C) 2003 Elsevier B.V. All rights reserved.Article Citation - WoS: 6Citation - Scopus: 6Crystal Structure of Lead(ii) Trioxovanadate(v) Chloride, Pb[vo 3]cl(Walter de Gruyter GmbH, 2007) Şahin, Aytaç; Eanes, MehtapClO3PbV, orthorhombic, Pnma (no. 62), a = 10.022(2) Å, b = 5.288(1) Å, c = 7.171(1) Å, V= 380.0 Å3, Z = 4, Rgt(F) = 0.035, wRref(F2) = 0.105, T= 153 K.
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