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Showing 1 to 20 of 55 for “"metal complex"”.
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Metal Complex Photo-activators for the Time-Controlled, Photo-Oxidation of Polyolefins
… is shown that the mechanism of action of these metal complexes involves both free radical scavenging and peroxide decomposition, but that the contribution of each to the overall mechanism is influenced by the nature of the metal centre and its presence. The nature of intermediates involved in …
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Development of a room temperature molecular electronics: Direct vs indirect metal complex synthesis
… also serves as a comparison between ‘direct’ (complexes as ligands/complexes as metals) and ‘indirect’ (on-complex) synthesis as a method of metal complex synthesis. Chapter 1 introduces the theory behind molecular electronics and solar energy conversion as well as the applicability of …
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Synthesis and X-ray Diffraction Structures of 2-(2-thienylidene)-4,5-bis-(diphenylphosphino)-4-cyclopenten-1,3-dione and fac-BrRe(CO)3[2-(2-thienylidene)-4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione]
… intermediate of ReBr(CO)5 with THF, a monomeric metal complex, fac-BrRe(CO)3[2-(2-thienylidene)-4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione] was the result. The solid-state structure of the monomeric metal complex was determined using X-ray crystallography. Photolysis and thermolysis …
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Synthesis of tetraazamacrocyclic complexes: Biomedical applications
… possess different properties which tailor the metal complex towards a particular role.
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Designing Volatile Molybdenum Compounds for Vapour-Phase Deposition
… are used, the ligands dissociate from the metal complex upon heating forming the dimeric compound, [(tBuN)Mo(μ-NtBu)Cl2]2, which has been isolated and characterized in the solid state. Notably, when neutral N,N’-chelating ligands were employed the ligands remained coordinated to the metal …
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The Mechanisms of Sulfur-Containing Metal Complexes as Uv-Stabilisers
… involved in the antioxidant behaviour of nickel complexes of dithiophosphoric and xanthic acids were investigated both by kinetic methods and product analysis. Two mechanisms were identified: the First is a radical trapping process involving the metal complex itself and the second is a Lewis acid …
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Steric aspects of the interaction of metal species with nucleic acid constituents
… of steric effects in the interaction of metal species with biomolecules has been addressed. More specifically, a focus has been placed on the interaction of platinum complexes with nucleoconstituents. Steric effects thus characterised have been related to the biological properties of such …
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Chiral Organometallic osmium(VI) Nitrido Complexes
The chiral-at-metal complex [Os(N)(CH2SiMe3)MeCl 2]- forms in a reaction of a mixed tetraalkyl osmium nitrido complex with pyridinium chloride. Reactions between Ag2CrO 4 and [Os(N)(CH2SiMe3)MeCl2] - or [Os(N)(CH2SiMe3)PhCl2] - give chiral-at-metal heterobimetallic complexes that catalyze the …
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Evaluation of polybenzimidazole as a selective metal sorbent and controlled release agent
… PBI should exhibit strong affinity for certain metal ions, and could be useful for solid phase extraction of metal ions. PBI's potential as an SPE has been assessed based upon its adsorption and desorption of metal tons from aqueous and organic environments. Factors affecting metal adsorption …
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Some metal complexes of dihydroxycyclobutenedione
… and chemical properties of the trivalent metal squarate complexes of iron, vanadium, and indium in order to determine their structure. In this investigation studies were made of the infrared spectra, electronic spectra, x-ray diffraction powder photographs and diffractometer patterns, …
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Applications of Electrocatalyzed Chemiluminescence of Luminol (Hydrogen Peroxide, Glucose, Electrogeneration, Flow Injection)
… potential advantages over the conventional metal ion or metal complex catalysts; these include control of both the spatial and temporal point at which catalysis takes place, and elimination of the need to prepare and add catalyst solutions. The emphasis of this research was on developing …
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Removal of colour from solutions of azo dyes using bacterial cells (Shewanella strain J18 143)
… in a free form, in reducing colour from selected metal-complex azo dye solutions. A grafted cellulose copolymer was chosen as the immobilisation substrate. The cotton fabric was firstly pre-treated and then underwent copolymerisation with the use of acrylic acid as the monomer and potassium …
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Enhancing the oxidation of Li₂O₂ in Li-O₂ batteries : mechanistic and chemical efficacy probing
… charge in electrodes containing transition metal nanoparticles and metal oxides, we revealed a strong correlation between the conversion enthalpy of the promoter with Li₂O₂ towards formation of a corresponding lithium-rich metal oxide. Experimental evidence of formation of Li₂CrO₄, and …
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Electron Transfer and Other Reactions Using Atomic Metal Anions
The atomic metal anions Rb-, Cs-, Cu-, Ag- and Fe- have been generated in the gas phase and reacted with various neutral reactants in a triple quadrupole mass spectrometer. The metal anions were formed via electrospray ionization of the metal-oxalate solutions and form in gas phase between the …
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Poly(amide acid) infusion with Copper(II) Chloride to form polyimide microcomposite films
… are modified by coating or doping the films with metal species to change the surface or bulk properties of the polyimide. Usually this is done to create an electrically conductive surface layer. Previously, surface layers of metal and/or metal oxide on polyimide films have been made by …
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The Development of Functionalized Metal Complexes as Selective Phosphopeptide Molecular Recognition Agents
The development of dimetallic metal complexes into functional and selective recognition agents for monophosphorylated peptides is described. The development of dimetallic metal complexes into functional and selective phosphopeptide recognition agents is described. Scaffold functionalization was …
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Constants of acid ionization and chelate formation of penicillamine and cysteine with gold (I) and other important metals at simulated biological conditions
… 0.15. These results were then used to determine metal complex formation constants of these ligands with the metals calcium(II), iron(III) and gold(I) by potentiometric titration using a standard glass and calomel reference electrode to determine hydrogen ion activity in solution. The results were …
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Mixed-Metal Ruthenium-Platinum Polyazine Supermolecules: Synthesis, Characterization and Exploration of DNA Binding
… properties of select ruthenium polyazine complexes, the approach was to bind the cis-PtIICl2 active site of cisplatin to ruthenium light absorbers using the dpq and dpb bridging ligands (where dpq = 2,3-bis(2-pyridyl)quinoxaline, dpb = 2,3-bis(2-pyridyl) benzoquinoxaline). These complexes …
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STRUCTURAL AND LUMINESCENT APPLICATIONS OF FUNCTIONALIZED SELF-ASSEMBLED SUPRAMOLECULAR COORDINATION COMPLEXES
… (II) self-assembly supramolecular coordination complexes. The exploration of interlocked structures provided an effective way to reveal the secretes of biologic self-assembly in nature. Meanwhile, to explore real biological world by microscope, heterobimetallic complexes as luminescent probes …
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Autonomous First-Principles Design of Transition Metal Complexes
Designing novel transition metal complexes (TMCs) holds immense potential for advancing sustainability and chemical synthesis. While high-throughput virtual screening (HTVS) workflows and density functional theory (DFT) have emerged as powerful tools for discovering new TMCs, exhaustive design …
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