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Relevant bibliographies by topics / Iron oxide cluster

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Academic literature on the topic 'Iron oxide cluster'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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Journal articles on the topic "Iron oxide cluster"

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Cheng, Zishuo, Aaron P. Landry, Yiming Wang, and Huangen Ding. "Binding of Nitric Oxide in CDGSH-type [2Fe-2S] Clusters of the Human Mitochondrial Protein Miner2." Journal of Biological Chemistry 292, no. 8 (2017): 3146–53. http://dx.doi.org/10.1074/jbc.m116.766774.

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Iron-sulfur proteins are among the primary targets of nitric oxide in cells. Previous studies have shown that iron-sulfur clusters hosted by cysteine residues in proteins are readily disrupted by nitric oxide forming a protein-bound dinitrosyl iron complex, thiolate-bridged di-iron tetranitrosyl complex, or octanitrosyl cluster. Here we report that human mitochondrial protein Miner2 [2Fe-2S] clusters can bind nitric oxide without disruption of the clusters. Miner2 is a member of a new CDGSH iron-sulfur protein family that also includes two mitochondrial proteins: the type II diabetes-related m

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Molek, K. S., C. Anfuso-Cleary, and M. A. Duncan. "Photodissociation of Iron Oxide Cluster Cations†." Journal of Physical Chemistry A 112, no. 39 (2008): 9238–47. http://dx.doi.org/10.1021/jp8009436.

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Vystavel, T., S. A. Koch, G. Palasantzas, and J. Th M. De Hosson. "In situ Transmission Electron Microscopy Studies on Structural Dynamics of Transition Metal Nanoclusters." Journal of Materials Research 20, no. 7 (2005): 1785–91. http://dx.doi.org/10.1557/jmr.2005.0222.

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The structural stability of transition metal nanoclusters has been scrutinized with in situ transmission electron microscopy as a function of temperature. In particular iron, cobalt, niobium, and molybdenum clusters with diameters around 5 nm have been investigated. During exposure to air, a thin oxide shell with a thickness of 2 nm is formed around the iron and cobalt clusters, which is thermally unstable under moderate high vacuum annealing above 200 °C. Interestingly, niobium clusters oxidize only internally at higher temperatures without the formation of an oxide shell. They are unaffected

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Garcia, Jacob M., Ryan E. Shaffer, and Scott G. Sayres. "Ultrafast pump–probe spectroscopy of neutral FenOm clusters (n, m < 16)." Physical Chemistry Chemical Physics 22, no. 42 (2020): 24624–32. http://dx.doi.org/10.1039/d0cp03889j.

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Duan, Xuewu, Juanjuan Yang, Binbin Ren, Guoqiang Tan, and Huangen Ding. "Reactivity of nitric oxide with the [4Fe–4S] cluster of dihydroxyacid dehydratase from Escherichia coli." Biochemical Journal 417, no. 3 (2009): 783–89. http://dx.doi.org/10.1042/bj20081423.

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Although the NO (nitric oxide)-mediated modification of iron–sulfur proteins has been well-documented in bacteria and mammalian cells, specific reactivity of NO with iron–sulfur proteins still remains elusive. In the present study, we report the first kinetic characterization of the reaction between NO and iron–sulfur clusters in protein using the Escherichia coli IlvD (dihydroxyacid dehydratase) [4Fe–4S] cluster as an example. Combining a sensitive NO electrode with EPR (electron paramagnetic resonance) spectroscopy and an enzyme activity assay, we demonstrate that NO is rapidly consumed by t

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Takahashi, Keisuke. "Iron oxide cluster induced barrier-free conversion of nitric oxide to ammonia." Chemical Communications 51, no. 19 (2015): 4062–64. http://dx.doi.org/10.1039/c4cc09467k.

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Xie, Xuan, and Chunfu Zhang. "Controllable Assembly of Hydrophobic Superparamagnetic Iron Oxide Nanoparticle with mPEG-PLA Copolymer and Its Effect on MR Transverse Relaxation Rate." Journal of Nanomaterials 2011 (2011): 1–7. http://dx.doi.org/10.1155/2011/152524.

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Assembly of individual superparamagnetic iron oxide nanoparticles (SPION) into cluster is an effective way to prepare MRI contrast agent with high relaxivity. In this study, we fabricated SPION clusters with different sizes and configurations by assembly of amphiphilic mPEG-PLA copolymer with hydrophobic SPION in aqueous solution. The evolution of cluster size and configuration with the amount of copolymer and the effect of cluster size on the transverse relaxivity was studied.T2relaxation rates of clusters with different sizes at iron concentration of 0.1 mM were compared with the theoretical

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Landry, Aaron P., and Huangen Ding. "The N-Terminal Domain of Human DNA Helicase Rtel1 Contains a Redox Active Iron-Sulfur Cluster." BioMed Research International 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/285791.

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Human telomere length regulator Rtel1 is a superfamily II DNA helicase and is essential for maintaining proper length of telomeres in chromosomes. Here we report that the N-terminal domain of human Rtel1 (RtelN) expressed inEscherichia colicells produces a protein that contains a redox active iron-sulfur cluster with the redox midpoint potential of −248 ± 10 mV (pH 8.0). The iron-sulfur cluster in RtelN is sensitive to hydrogen peroxide and nitric oxide, indicating that reactive oxygen/nitrogen species may modulate the DNA helicase activity of Rtel1 via modification of its iron-sulfur cluster.

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Nolan, Michael, Anna Iwaszuk, and Hiroaki Tada. "Molecular Metal Oxide Cluster-Surface Modified Titanium(IV) Dioxide Photocatalysts." Australian Journal of Chemistry 65, no. 6 (2012): 624. http://dx.doi.org/10.1071/ch11451.

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The surface modification of TiO2 with molecular sized metal oxide clusters has recently been shown to be a promising approach for providing TiO2 with visible-light activity and/or improved UV activity. This short review summarizes the effects of the surface modification of TiO2 with the oxides of iron and tin selected from d- and p-blocks, respectively, on the photocatalytic activity. Fe(acac)3 and [Sn(acac)2]Cl2 chemisorption on the TiO2 surface occurs by ligand-exchange and ion-exchange, respectively. Taking advantage of the strong adsorption, we formed extremely small metal oxide clusters o

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Deng, Qianjun, Jiming Wang, Guangzhao Li, and Shuhua Zhang. "Synthesis, structure and magnetism of a new ionic pentanuclear iron cluster." Acta Crystallographica Section C Structural Chemistry 76, no. 7 (2020): 690–94. http://dx.doi.org/10.1107/s205322962000861x.

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A new ionic pentanuclear FeIII cluster, namely, triethylazanium tetrakis(μ2-5-amino-1,2,3,4-tetrazolido)tetrakis(μ3-4-chloro-2-{[(1H-tetrazol-1-id-5-yl)imino]methyl}phenolato)di-μ3-oxido-pentairon(III) acetonitrile monosolvate monohydrate, (C6H16N)[Fe5(C8H4ClN5O)4(CH2N5)4O2]·CH3CN·H2O, was synthesized using microvial synthesis methods and characterized by elemental analysis, FT–IR spectroscopy, single-crystal X-ray diffraction and thermogravimetric analysis. Magnetic studies reveal that the complex displays dominant antiferromagnetic intracluster interactions between the FeIII ions through the

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Dissertations / Theses on the topic "Iron oxide cluster"

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Schiewer, Christine Elisabeth. "Nitric Oxide Reactivity and Unusual Redox Properties of Biomimetic Iron-Sulfur Clusters with Alternative Cluster Ligands." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E3D3-F.

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Zachary, Mouna. "Multifunctional chelators for high nuclearity iron oxide clusters and inter-cluster ligand exchange in Au nanoparticles." Thesis, University of York, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424584.

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Rodrigues, Guimarães Thiago. "Synthesis of magnetic polymer latex particles by reversible addition-fragmentation chain transfer (RAFT) polymerization in aqueous dispersed media." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1107/document.

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Dans le cadre de ce travail de thèse, la polymérisation de type RAFT a été exploitée pour synthétiser des particules de latex magnétiques décorées de polymères stimulables. Cinq (co)polymères hydrophiles ont tout d'abord été préparés via la (co)polymérisation RAFT en solution d'acide acrylique (AA) et de méthacrylate de 2-diméthylaminoéthyle (MADAME). Les agents macromoléculaires obtenus (macroRAFT) : des homopolymères de PAA ou PMADAME ainsi que des copolymères P(AA-co-MADAME), présentent une sensibilité au pH et à la température. Ces macroRAFT hydrophiles ont ensuite été utilisés dans des ré

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Schiewer, Christine Elisabeth [Verfasser], Franc [Akademischer Betreuer] Meyer, Franc [Gutachter] Meyer, et al. "Nitric Oxide Reactivity and Unusual Redox Properties of Biomimetic Iron-Sulfur Clusters with Alternative Cluster Ligands / Christine Elisabeth Schiewer ; Gutachter: Franc Meyer, Kai Tittmann, Inke Siewert, Selvan Demir, Franziska Thomas, Matthias Otte ; Betreuer: Franc Meyer." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://d-nb.info/1165304759/34.

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Zhang, Lei 1970. "Sol-gel matrix-mediated synthesis of superparamagnetic iron oxide clusters and supported iron porphyrin oxidation catalysts." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9968.

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Mason, Kevin. "Building MIII clusters with derivatised salicylaldoximes." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/6252.

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This thesis describes the synthesis of a host of polynuclear iron complexes synthesised with phenolic oxime ligands, fundamentally developing the coordination chemistry of iron with these ligands. The metallic cores that occur within iron phenolic oxime clusters were found to contain almost exclusively oxo-centred triangles and oxo-centred tetrahedra. We found that we could alter the reaction conditions or derivatise the ligands and develop these basic building blocks into more elaborate arrays, exerting a degree of control over creating larger or smaller clusters. Chapter one describes the sy

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Τζαβάρα, Δήμητρα. "Παρασκευή, χαρακτηρισμός και μελέτη τοξικότητας υβριδικών νανοκολλοειδών μαγνητίτη". Thesis, 2014. http://hdl.handle.net/10889/8366.

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Μαγνητικά νανοσωματίδια οξειδίων του σιδήρου παρασκευάσθηκαν μέσω της αλκαλικής συμπύκνωσης και ελεγχόμενης καταβύθισης συμπλόκων ιόντων FeII, υπό την παρουσία τυχαίου συμπολυμερούς PAA-co-MA. Οι παράμετροι της σύνθεσης μεταβλήθηκαν με σκοπό την απομόνωση προϊόντων που να εμφανίζουν τις καλύτερες μαγνητικές ιδιότητες. Όλα τα προϊόντα εμφάνισαν υψηλή κολλοειδή σταθερότητα σε υδατικά μέσα χαμηλής ιοντικής ισχύος, ενώ ο σιδηρομαγνητικός τους χαρακτήρας έδειξε να ποικίλει από ασθενής μέχρι αρκετά ισχυρός, όπως προέκυψε μετά τον χαρακτηρισμό τους με μαγνητοφόρηση και μαγνητική υπερθερμία με εναλλασ

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Chang, Chun-Chih, and 張鈞智. "Theoertical Studies of Chemical Reactions on Rhodium Nano Clusters: I. Bond scission of NO over rhodium and nickel small-size clustersII. CO2 dissociation on various structures of rhodium nanoclusters (Rh13) supported on unzipped graphene oxide III. Dehydrogenation of ethane, propane and butane on Rh13 clusters supported on unzipped graphene oxide、IrO2 (110) and TiO2 (110)." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/84735474505585045774.

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博士<br>國立臺灣師範大學<br>化學系<br>104<br>We applied density-functional theory (DFT) to investigate the adsorption and dissociation of NO on Rh19 and Ni19 clusters with a double-icosahedral (DI) structure. The transition structures of the NO dissociating on the potential-energy surfaces were derived with the nudged-elastic-band (NEB) method. The adsorption energies of NO molecules on the rhombus-center region of DI clusters are -2.53 eV and -2.78 eV with the N-O bond elongated to 1.33Å and 1.35 Å, respectively, on Ni19 and Rh19, compared to 1.16 Å of the gaseous NO counterpart. The barriers to the dis

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Book chapters on the topic "Iron oxide cluster"

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Pardasani, R. T., and P. Pardasani. "Magnetic properties hexanuclear iron(III) oxide cluster: octahedral [Fe6O2]14+." In Magnetic Properties of Paramagnetic Compounds. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53971-2_49.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties hexanuclear iron(III) oxide cluster: octahedral [Fe6O2]14+." In Magnetic Properties of Paramagnetic Compounds. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53971-2_50.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties octanuclear iron(III) oxide cluster:[Fe8O4]16+ species." In Magnetic Properties of Paramagnetic Compounds. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53971-2_51.

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Carlsson, A., G. Karlsson, J. O. Bovin, et al. "The structure of an iron oxide cluster incorporated into zeolite Y, determined by HRTEM and SAED." In The European Physical Journal D. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-88188-6_126.

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Mitov, I., T. Tabakova, D. Andreeva, and T. Tomov. "Mössbauer spectroscopic characterization of ultrafine iron oxide and oxyhydroxide prepared by oxidative hydrolysis." In Small Particles and Inorganic Clusters. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76178-2_67.

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Knops-Gerrits, Peter-Paul H. J. M. "Structure—Reactivity Studies of the Methane Partial Oxidation by Nitrous Oxide-Activated Iron Clusters in Various Zeolite Topologies." In ACS Symposium Series. American Chemical Society, 2003. http://dx.doi.org/10.1021/bk-2003-0852.ch017.

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Nascimento Correa, Tarcisio, Igor Nunes Taveira, Rogerio Presciliano de Souza Filho, and Fernanda de Avila Abreu. "Biomineralization of Magnetosomes: Billion-Year Evolution Shaping Modern Nanotools." In Biomineralization [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94465.

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Biomineralization in the microbial realm usually gives origin to finely structured inorganic nanomaterials. Perhaps, one of the most elegant bioinorganic processes found in nature is the iron biomineralization into magnetosomes, which is performed by magnetotactic bacteria. A magnetosome gene cluster within the bacterial genome precisely regulates the mineral synthesis. The spread and evolution of this ability among bacteria are thought to be a 2,7-billion-year process mediated by horizontal gene transfers. The produced magnetite or greigite nanocrystals coated by a biological membrane have a narrow diameter dispersibility, a highly precise morphology, and a permanent magnetic dipole due to the molecular level control. Approaches inspired by this bacterial biomineralization mechanism can imitate some of the biogenic nanomagnets characteristics in the chemical synthesis of iron oxide nanoparticles. Thus, this chapter will give a concise overview of magnetosome synthesis’s main steps, some hypotheses about the evolution of magnetosomes’ biomineralization, and approaches used to mimic this biological phenomenon in vitro.

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Okamoto, Yasuaki, Hiroaki Kikuta, Yoshiharu Ohto, Saburo Nasu, and Osamu Terasaki. "Preparation, characterization, and catalysis of intrazeolite iron oxide clusters." In Studies in Surface Science and Catalysis. Elsevier, 1997. http://dx.doi.org/10.1016/s0167-2991(97)80672-6.

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Dodd, Erin L., Jason C. Crack, Andrew J. Thomson, and Nick E. Le Brun. "13. Reactivity of iron-sulfur clusters with nitric oxide." In Characterization, Properties and Applications, edited by Tracey Rouault. De Gruyter, 2017. http://dx.doi.org/10.1515/9783110480436-013.

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Conference papers on the topic "Iron oxide cluster"

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Das, Nishith K., and T. Shoji. "First-Principles Study of Atomic Hydrogen and Oxygen Adsorption on Doped-Iron Nanoclusters." In 2016 24th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icone24-60516.

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Density functional theory calculations have been used to calculate the ground state structure and oxygen and hydrogen adsorption properties of the pure and doped-iron nanoclusters. Small atomic clusters containing two to six atoms have been considered and a single Fe atom has replaced by a minor element i.e. Zr, Ti, and Sc. Doping of a minor element increases the cluster stability and octahedron Fe5Zr is the most stable structure within this study. Zr- and Sc-doped clusters have the highest oxygen and hydrogen adsorption energy. The electronic structure shows a strong hybridization between the

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Yuan, Yuan, and Diana-Andra Borca-Tasciuc. "The Influence of Coating and Agglomeration on Specific Absorption Rate of Iron Oxide Nanoparticles." In ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2011. http://dx.doi.org/10.1115/icnmm2011-58217.

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Magnetic nanofluids can be remotely heated by alternating magnetic field and have significant potential for cancer hyperthermia therapy. The heat generated by magnetic nanoparticles is typically quantified by the specific absorption rate (SAR), which represents the thermal power per unit mass of magnetic material generated in the presence of an alternating magnetic field. During hyperthermia treatment, heat dosage of tumor tissue correlates with slowing tumor growth. The therapeutic ratios of cancer can be increased with the use of biofunctionalized magnetic nanoparticles that have higher SAR

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Buyukhatipoglu, Kivilcim, Tiffany A. Miller, and Alisa Morss Clyne. "Biocompatible, Superparamagnetic, Flame Synthesized Iron Oxide Nanoparticles: Cellular Uptake and Toxicity Studies." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68049.

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Superparamagnetic iron oxide nanoparticles, including magnetite (Fe3O4), are widely used in applications such as targeted drug delivery, magnetic resonance imaging, tissue engineering, gene therapy, hyperthermic malignant cell treatment, and cell membrane manipulation. These nanoparticles are particularly interesting for in vivo and in vitro applications since they do not exhibit magnetic behavior once the magnetic field has been removed. In the current work, superparamagnetic iron oxide nanoparticles were produced using a flame synthesis method, which provides significant advantages over othe

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Garcia, Jacob, and Scott Sayres. "RELAXATION DYNAMICS OF NEUTRAL IRON OXIDE CLUSTERS USING FEMTOSECOND PUMP-PROBE SPECTROSCOPY." In 74th International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2019. http://dx.doi.org/10.15278/isms.2019.tc04.

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Horowitz, Emmanuel. "The Importance of Establishing an Operational Approach for the Selection of Materials in the Reactors of the Future." In 16th International Conference on Nuclear Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/icone16-48651.

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Nuclear scientists and engineers should consider adopting a more operational approach for the purpose of selecting their future materials. For each type of nuclear power generating reactor, for each coolant (water, helium or liquid metal), the next generation of specialists and decision-makers will need to choose and optimise the iron or nickel alloys, steels, ODS (oxide dispersed strengthened steels) and ceramics that are going to be used. It may well be considered that either each reactor type has its own, specific materials, or, in a complementary manner, that the efforts for improvements s

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Brullot, Ward, Stefaan Vandendriessche, and Thierry Verbiest. "Magneto-optical effects in clusters of superparamagnetic iron oxide and plasmonic gold nanoparticles." In CLEO: Applications and Technology. OSA, 2013. http://dx.doi.org/10.1364/cleo_at.2013.jtu4a.77.

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