相似化合物
7440-19-9 7440-19-9 7440-19-9专利信息
专利号:US-11718536-B2
优先权日:2020-07-29
标题 :Solvent-free synthesis of lanthanide oxide and mixed lanthanide oxide nanoparticles
发明人:Treadwell LaRico Juan; BREGMAN AVI GABRIEL; RINGGOLD MARISSA
权利人:NAT TECH & ENG SOLUTIONS SANDIA LLC
摘要:Lanthanide oxides and mixed lanthanide oxides can be produced using furnace or microwave assisted solid-state synthesis. The use of Ln-tri(methylsilyl)amide-based precursors yields spherical nanoparticles. The formation of spherical shaped nanoparticles is likely due to the preferential single-step decomposition of the Ln-TMS as well as the low activation energy to overcome decomposition. Reaction temperature, initial metal ion ratio, and reaction dwell time can be used to control the final nanoparticle size. The method enables solvent-free, high-yield synthesis of morphology-controlled lanthanide oxides.
专利号:WO-2009117718-A1
优先权日:2008-03-20
标 题:Direct chemical synthesis of rare earth-transition metal alloy magnetic materials
发明人:CHINNASAMY C N; HARRIS VINCENT G
权利人:UNIV NORTHEASTERN; CHINNASAMY C N; HARRIS VINCENT G
摘要:A direct chemical synthesis scheme for the fabrication of isotropic and anisotropic rare earth (RE) -transition metal (TM)- based permanent magnets is disclosed. The method according to the invention permits the synthesis of, e.g., particles, films and coatings with controlled particle sizes, shapes, compositions and dispersion in one reaction process. The resulting particles have desirable hard magnetic properties such as high magnetic saturation induction and coercivity at room temperature.
专利号:US-5525325-A
优先权日:1989-03-06
标 题 :Expanded porphyrins: large porphyrin-like tripyrroledimethine-derived macrocycles
发明人:SESSLER JONATHAN L; HEMMI GREGORY W; MURAI TOSHIAKI
权利人:REGENTS UNIVERSITY OF TEXAS BO
摘要:The present invention involves a novel tripyrrole dimethine-derived 'expanded porphyrin' (texaphyrin), the synthesis of such compounds, their analogs or derivatives and their uses. These expanded porphyrin-like macrocycles are efficient chelators of divalent and trivalent metal ions. Metal complexes of these compounds are active as photosensitizers for the generation of singlet oxygen and thus potentially for inactivation or destruction of human immunodeficiency virus (HIV-1), mononuclear or other cells infected with such virus and tumor cells as well. A variety of texaphyrin derivatives have been produced and many more are readily obtainable. Various metal (e.g., transition, main group, and lanthanide) complexes with the texaphyrin and texaphyrin derivatives of the present invention have unusual water solubility and stability which render them particularly useful. These metallotexaphyrin complexes have optical properties making them unique as compared to existing porphyrin-like or other macrocycles. For example, they absorb light strongly in a physiologically important region (i.e. 690-880 nm). These complexes also form long-lived triplet states in high yield and act as efficient photosensitizers for the formation of singlet oxygen. These properties, coupled with their high chemical stability and appreciable solubility in polar media such as water, add to their usefulness.
专利号:CN-104114274-A
优先权日:2012-02-15
标 题 :Catalytically active body for the synthesis of dimethyl ether from synthesis gas
专利号:CN-104114274-B
优先权日:2012-02-15
标 题 :Catalytically active body for the synthesis of dimethyl ether from synthesis gas
专利号:US-5256399-A
优先权日:1989-03-06
标题:Aromatic pentadentate expanded porphyrins in magnetic resonance imaging
发明人:SESSLER JONATHAN L; HEMMI GREGORY W; MURAI TOSHIAKI
权利人:UNIV TEXAS
摘要:The present invention involves a novel tripyrrole dimethine-derived 'expanded porphyrin' (texaphyrin), the synthesis of such compounds, their analogs or derivatives and their uses. These expanded porphyrin-like macrocycles are efficient chelators of divalent and trivalent metal ions. Metal complexes of these compounds are active as photosensitizers for the generation of singlet oxygen and thus potentially for inactivation or destruction of human immunodeficiency virus (HIV-1), mononuclear or other cells infected with such virus and tumor cells as well. A variety of texaphyrin derivatives have been produced and many more are readily obtainable. Various metal (e.g., transition, main group, and lanthanide) complexes with the texaphyrin and texaphyrin derivatives of the present invention have unusual water solubility and stability which render them particularly useful. These metallotexaphyrin complexes have optical properties making them unique as compared to existing porphyrin-like or other macrocycles. For example, they absorb light strongly in a physiol n This invention was made in part with government support under the National Science Foundation Presidential Young Investigator Award (1986) to J. L. Sessler, grant CHE-8552768. The government has certain rights in the invention.