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Showing 1 to 20 of 53 for “"Diazonium"”.
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Reaction of Organometallics With Diazonium Salts
Made available in DSpace on 2014-12-05T19:37:33Z (GMT). No. of bitstreams: 1 6004006.pdf: 3645054 bytes, checksum: b429e784d64abbe732e99dba2d395aff (MD5) Previous issue date: 1960
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The reduction of organic halides and diazonium salts with sodium borohydride
… a benzene system to generate para-xylylenes. Diazonium salts were also shown to undergo direct reduction with sodium borohydride, thus providing a new route for the deamination of aromatic amines.
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A novel diazonium-sulfhydryl reaction in the inactivation of yeast alcohol dehydrogenase by diazotized 3-aminopyridine adenine dinucleotide
… structurally characterized for these studies. Diazonium-sulfhydryl reactions were demonstrated for a number of diazonium derivatives with cysteine, homocysteine, glutathione and mercaptoethanol at 0-4° and neutral pH. Second order rate constants were determined in reactions of these sulfhydryl …
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Stabilisation of diazo compounds used in lithographic systems.
… to be due to the presence in the formulation of diazonium compounds that were thermally unstable. These compounds were studied in coating solutions and printing plates. Alternative analytical techniques for diazonium analysis were examined. It was found that HPLC and UV/vis spectroscopy were most …
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Engineering nanocarbon interfaces for electron transfer
… the chemical reaction of SWCNTs with selected diazonium salts as a means of controlling the number of moieties attached to a given nanotube. We initially explore this reaction theoretically using a kinetic Monte Carlo simulation, with rate parameters evaluated using Gerischer-Marcus theory, in …
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The Synthesis and Reactions of 2-Diazo-4,5-Bis(trifluoromethyl)imidazole, a Carbene Precursor to Stable Ylide and Hypervalent Compounds
… The diazoimidazole has a diazonium-type structure, with a short N-N bond length of 1.089 A. It may be considered as an ylide of dinitrogen.
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Syntheses of Azido- and Diazido- 10-Methylacridinium Salts.
… followed by nucleophilic displacement of the diazonium salt with sodium azide.Synthesis of 4-azido-9-amino-10-methylacridinium chloride was unsuccessful at the methylation stage due to steric hindrance of the 4-acetamido group. An improved yield of 4-nitro-9-aminoacridine is also reported.
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Using Covalent and Non-Covalent Chemistry to Control Properties of Single -Walled Carbon Nanotubes
… covalent functionalization with 4-hydroxybenzene diazonium and non-covalent functionalization with sodium cholate surfactant. Solution-phase solubility without surfactants can be achieved using high levels of covalent functionalization with aryl hydroxyl or aryl carboxylic acid moieties. Polymer …
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Manipulation of Carbon Nanostructures for Multifunctional Composite Materials
… of GO were functionalized by treatment with aryl diazonium salts. The functionalized nanosheets disperse readily in polar aprotic solvents. A one-pot method has also been developed for reducing GO and simultaneously functionalizing it with alkyl and aryl groups. The alkyl functionalized reduced GO …
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DNA detection system of homo-oligomers by electrochemical impedence measurements and quantification through radiolabeling
… modification of Si substrates with bromobenzene diazonium was also used to immobilized single stranded DNA. The DNA detection system is able to recognize any electrical changes occurring at the electrode through in-phase and out-of-phase impedance measurements. Hybridization of the complementary …
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Synthesis of Sustainable Antibacterial Materials by Surface Functionalisation of NZ Flax (Phormium tenax) Fibres and Hemp (Cannabis sativa) Hurd
… bridging, epichlorohydrin cross-linking and diazonium-based surface chemistry. X-ray photoelectron spectroscopy (XPS), water contact angle measurements and bioactivity tests of the surface functionalised PTF and HH confirmed that the diazonium method of surface functionalisation was the most …
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Non-precious metal catalysts prepared by chemical functionalization of carbon surfaces.
… Pearls 2000 or Ketjen Black EC600JD) using a diazonium coupling reaction. This a chemisorption process, as opposed to physisorption one, that allows for a clearer model of attachment of the aphen molecule. In order to understand the effects of the precursor and the metal on active site density …
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Thermoplastic electrode surface modifications for use as label-free electrochemical immunosensors
… of a new TPE surface modification using aryl diazonium grafting followed by click chemistry to biotinylate electrodes for easy antibody immobilization. A variety of electrochemical techniques and surface characterizations were used to examine the stepwise modification of the TPE surface. It …
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Graphene at interfaces
… intercalation compounds by reaction with an aryl diazonium salt solution under electrochemical reducing conditions. The covalent functionalization of graphene successfully provided the appropriate chemical activity/reactivity for the desired applications. Through the reactivity of functional …
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Synthesis of functionalized few layer graphene via electrochemical expansion
… basal surfaces. Electrochemically enhanced diazonium functionalization of the expanded graphite was performed. The exfoliated graphene platelets were analyzed by Raman spectroscopy, to quantify defect states and the degree of exfoliation. Additional microscopy techniques provided additional …
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Carbon nanotubes and graphene in aqueous surfactant solutions : molecular simulations and theoretical modeling
… species. Third, I showed that the free energy of diazonium adsorption onto the SWCNT-surfactant complex, determined using PMF calculations, can be used to rank surfactants (SC, SDS, and CTAB) in terms of the extent of functionalization attained following their adsorption on the nanotube surface. …
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