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Showing 1 to 20 of 345 for “"fluorine"”.
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Fluorine-Containing Poly(aryl ethers)
Incorporation of fluorine into the polymer backbone is known to increase solubility, thermal stability, oxidative resistance and flame resistance while decreasing dielectric constant, water absorption and color. Another moiety often incorporated into polymers to improve thermal stability is the …
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Metalloid aluminum clusters with fluorine
… organic ligand contains significant amounts of fluorine. The fluorine can, in principle, oxidize the metallic elements, resulting in a system much like organic explosives where the fuel and oxidizer components are mere angstroms apart. We performed density functional theory calculations within …
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Development of Fluorine-18 Halofluorination and Fluorine-18 Fluoride Ion Displacement Reactions for the Synthesis of Fluorine-18 Labeled Radiopharmaceuticals (Spiperone, Spiroperidol, N-Alkylation, Radioactivity)
Two fluorine-18 labeling methods, ('18)F halofluorination and ('18)F fluoride ion displacement reactions, have been developed to assess their potential for labeling molecules with the positron-emitting radionuclide fluorine-18 at the no-carrier-added level.
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Reduction of Fluorine in Phosphate Rock
Phosphorus is widely distributed in the earth's crust, constituting about 0.13%. Like many other reactive elements, it is never found free in nature. Phosphorus is an essential constituent of both vegetable and animal matter; thus, it is important as a component of fertilizers and feed supplements.
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Geochemistry of Fluorine in Illinois Soils
Made available in DSpace on 2014-12-14T14:37:19Z (GMT). No. of bitstreams: 1 7709127.pdf: 5666600 bytes, checksum: d52aeb46c7489690c630e8dc2bc99cff (MD5) Previous issue date: 1976
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Slow Beats in Fluorine-19 Spin Echoes
Made available in DSpace on 2015-05-12T17:11:43Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0004466.PDF: 1766357 bytes, checksum: b02ab6f8c37f4e93af1393667d1bac6f (MD5) Previous issue date: 1952
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Photoassociation of krypton and fluorine collision pairs
The photoassociation spectrum of Kr-F collision pairs in thermal equilibrium (293$\sp\circ$K) to KrF(B) has been observed using a laser-induced fluorescence technique with a tunable probe over the wavelength range 219 nm $\leq$ $\lambda$ $\leq$ 250 nm. The spectrum was then analyzed by numerical …
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Some aspects of the geochemistry of fluorine
Thesis. (Ph.D.) Massachusetts Institute of Technology. Dept. of Geology, 1951.
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High Resolution Nmr Studies of Some Fluorine Compounds
Made available in DSpace on 2014-12-05T19:37:24Z (GMT). No. of bitstreams: 1 6001669.pdf: 5675175 bytes, checksum: ea6ef6635a4ee4dd5740125cffe431b8 (MD5) Previous issue date: 1960
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Reactive chemisorption of molecular fluorine on Si(100)
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemistry, 1989
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The construction and use of a fluorine generator
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1941.
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Spatially resolved technique for the measurement of fluorine radicals
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01
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Fluorine-containing fullerenes and endometallofullerenes: synthesis, structure, and spectroscopic characterization
… class of exohedral fullerene derivatives with fluorine-containing electron-withdrawing groups have been prepared and studied by spectroscopic methods and X-ray crystallography. The fluorination and/or perfluoroalkylation reactions were performed with C60, C70, the higher hollow fullerenes C60+m …
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Novel applications of fluorine-18 labelled radiotracers in cardiovascular disease
… binding were characterised in rats. Both Cy5 and fluorine-18 labelled ENC2015 rapidly and specifically bound to thrombi. Thrombus uptake was inhibited by a factor XIIIa inhibitor. ¹⁸F-ENC2015 remained unmetabolized over 8 hours when incubated in ex vivo human blood. In vivo, 42% of parent …
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The interactions of molecular fluorine and xenon difluoride with silicon
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1999.
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Solution and solid state NMR studies of fluorine tagging reagents
A series of studies are presented in which fluorine tagging reagents are used to analyze complex mixtures for compounds containing active hydrogen functional groups (e.g., hydroxyl, amine, thiol, and carboxylic groups). The existence of these derivatized functional groups is determined by utilizing …
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Water and fluorine contents in Mt. Hood magmas recorded by plagioclase phenocrysts
Volatiles have a significant effect on the properties of minerals and melts, even when present in trace amounts. They impact the phase equilibria (Wyllie 1979; Gaetani and Grove 1998), rheological properties (Dingwell et al. 1985; Hirth and Kohlstedt 1996), and volcanic eruption dynamics …
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