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Chemical Compound Review

Baytitan     dioxotitanium

Synonyms: Brookite, Flamenco, Hombikat, Hombitan, Sagenite, ...
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Disease relevance of dioxotitanium


Psychiatry related information on dioxotitanium


High impact information on dioxotitanium

  • Devices fabricated using a fluorescein photoreceptor on an Au/TiO2/Ti multilayer structure had typical open-circuit photovoltages of 600-800 mV and short-circuit photocurrents of 10-18 micro A cm(-2) under 100 mW cm(-2) visible band illumination: the internal quantum efficiency (electrons measured per photon absorbed) was 10 per cent [8].
  • Transfection of COS cells with MARCO cDNA conferred mAb-inhibitable TiO2 binding [9].
  • To identify these receptors, we generated a monoclonal antibody (mAb), PAL-1, that inhibits hamster AM binding of unopsonized particles (TiO2, Fe2O3, and latex beads; 66 +/- 5, 77 +/- 2, and 85 +/- 2% inhibition, respectively, measured by flow cytometry) [9].
  • An amorphous sample with surface area of 34,600 m(2)/mol is 24.25 +/- 0.88 kJ/mol higher in enthalpy than bulk rutile [10].
  • The gypsy retroelement of Drosophila moves at high frequency in the germ line of the progeny of females carrying a mutation in the flamenco (flam) gene [11].

Chemical compound and disease context of dioxotitanium


Biological context of dioxotitanium

  • In contrast, very little cell death was observed from TiO2 treatment without UV irradiation [17].
  • AM uptake of unopsonized TiO2, SR ligands or acetylated LDL caused no significant activation of AM respiratory burst or TNF production, consistent with past observations that opsonin-independent phagocytosis of inert particles by normal AMs is not accompanied by pro-inflammatory activation [18].
  • High purity anatase TiO(2) nanocrystals: near room-temperature synthesis, grain growth kinetics, and surface hydration chemistry [19].
  • Oxygen vacancies as active sites for water dissociation on rutile TiO(2)(110) [20].
  • It seems plausible that the difference of activity observed for TiO2 and F-TiO2 is not related to various types of generated hydroxyl radicals, but rather to competition between electron-transfer processes (formation of radicals) and energy-transfer processes (formation of singlet oxygen) [21].

Anatomical context of dioxotitanium

  • HeLa cells cultured in vitro were completely killed in the presence of TiO2 (50 micrograms/ml) with 10-min UV irradiation by a 500-W-Hg lamp [17].
  • Human skin fibroblasts, preincubated 18 h with 10 micrograms/cm2 TiO2 and then UVA-irradiated (0-58 KJ/m2), showed dose dependent photocytoxicity [22].
  • There was a marked loss of chemotactic ability in leukocytes from rats inhaling the pneumoconiotic dusts compared with controls; TiO2-exposed leukocytes had some impairment of chemotaxis, but this was substantially less than that found with the pneumoconiotic dusts [23].
  • The semiconductor TiO2 is known to have photobiological activity in prokaryotic and eukaryotic cells [22].
  • The morphologies of both titania sol-gel and the enzyme membranes were characterized using scanning electron microscopy and proved to be chemically clean, porous, and homogeneous and to have a very narrow particle size distribution [24].

Associations of dioxotitanium with other chemical compounds

  • The sol-gel reaction of titanium tetraisopropoxide (TTIP) was used to prepare core/shell-type titania nanocapsules with CTAB-coated Ag nanoparticles as the core [25].
  • However, X-ray photoemission measurements also indicate lower binding energies than the usual Au 4f(7/2) at 84.0 eV for both alumina and titania supported catalysts, indicating a modification of the electronic structure of the metal [26].
  • To demonstrate the commercial application potential of these processes, we also report titanate and TiO(2) nanostructures synthesized directly from rutile minerals and industrial-grade rutiles by a new scheme of hydrometallurgical reactions [27].
  • Furthermore, the physical origin of the water effects on Au catalysis has been identified by electronic structure analyses: There is a charge transfer from TiO2 in the presence of OH to O2, and the O2 adsorption energy depends linearly on the O2 charge [28].
  • The time evolution of the Raman spectra shows an increasing fluorescence indicating that, upon electron injection, catechol polymerization occurs on the TiO2 surfaces [29].

Gene context of dioxotitanium


Analytical, diagnostic and therapeutic context of dioxotitanium

  • Interfacial synthesis of hollow TiO2 microspheres in ionic liquids [35].
  • Unusual crystallization behaviors of anatase nanocrystallites from a molecularly thin titania nanosheet and its stacked forms: increase in nucleation temperature and oriented growth [36].
  • Excited-state metal-to-ligand charge transfer dynamics of a ruthenium(II) dye in solution and adsorbed on TiO2 nanoparticles from resonance Raman spectroscopy [37].
  • Heats of adsorption of linear CO species adsorbed on the Au degrees and Ti+delta sites of a 1% Au/TiO2 catalyst using in situ FTIR spectroscopy under adsorption equilibrium [38].
  • We use low-energy electron microscopy to show that changing the temperature of oxygen-deficient, rutile-structure crystals causes steps on the (110) surfaces to move [39].


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  20. Oxygen vacancies as active sites for water dissociation on rutile TiO(2)(110). Schaub, R., Thostrup, P., Lopez, N., Laegsgaard, E., Stensgaard, I., Nørskov, J.K., Besenbacher, F. Phys. Rev. Lett. (2001) [Pubmed]
  21. Singlet oxygen photogeneration at surface modified titanium dioxide. Ja Nacute Czyk, A., Krakowska, e.l. .Z.B., Stochel, G.Z., Macyk, W. J. Am. Chem. Soc. (2006) [Pubmed]
  22. Oxidative damage to nucleic acids photosensitized by titanium dioxide. Wamer, W.G., Yin, J.J., Wei, R.R. Free Radic. Biol. Med. (1997) [Pubmed]
  23. Impaired chemotactic responses of bronchoalveolar leukocytes in experimental pneumoconiosis. Donaldson, K., Brown, G.M., Brown, D.M., Slight, J., Robertson, M.D., Davis, J.M. J. Pathol. (1990) [Pubmed]
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  26. Oxidation of CO on gold supported catalysts prepared by laser vaporization: direct evidence of support contribution. Arrii, S., Morfin, F., Renouprez, A.J., Rousset, J.L. J. Am. Chem. Soc. (2004) [Pubmed]
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  28. Identifying an O2 supply pathway in CO oxidation on Au/TiO2(110): a density functional theory study on the intrinsic role of water. Liu, L.M., McAllister, B., Ye, H.Q., Hu, P. J. Am. Chem. Soc. (2006) [Pubmed]
  29. A spectroscopic and electrochemical approach to the study of the interactions and photoinduced electron transfer between catechol and anatase nanoparticles in aqueous solution. Lana-Villarreal, T., Rodes, A., Pérez, J.M., Gómez, R. J. Am. Chem. Soc. (2005) [Pubmed]
  30. Evidence for a piwi-dependent RNA silencing of the gypsy endogenous retrovirus by the Drosophila melanogaster flamenco gene. Sarot, E., Payen-Groschêne, G., Bucheton, A., Pélisson, A. Genetics (2004) [Pubmed]
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  37. Excited-state metal-to-ligand charge transfer dynamics of a ruthenium(II) dye in solution and adsorbed on TiO2 nanoparticles from resonance Raman spectroscopy. Shoute, L.C., Loppnow, G.R. J. Am. Chem. Soc. (2003) [Pubmed]
  38. Heats of adsorption of linear CO species adsorbed on the Au degrees and Ti+delta sites of a 1% Au/TiO2 catalyst using in situ FTIR spectroscopy under adsorption equilibrium. Derrouiche, S., Gravejat, P., Bianchi, D. J. Am. Chem. Soc. (2004) [Pubmed]
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