86 results about "Metallofullerene" patented technology

The present invention provides a layered metal / fullerene anode structure for efficient hole injection. The layered anode structure includes one or more layers of electrical conductors and a second layer containing fullerenes. The thickness of the second layer is selected so that the layered structure facilitate hole transfer from the layer to second layer under electrical bias. The present invention also provides a light-emitting device which includes a layered metal / fullerene anode. The device includes an hole transport layer, and a second electrically conductive layer defining a cathode electrode layer. The device includes a layer of light-emissive material between the hole transport layer and the cathode electrode. The device may also include a hole injection layer interposed between the layered metal / fullerene anode and the hole transport layer. The device may also include a dielectric layer attached to the metal layer of the layered metal / fullerene anode.

The present invention relates to a reverse osmosis membrane and a preparation method thereof, and belongs to the technical field of membrane separation. The reverse osmosis membrane comprises metal fullerene dispersed in the reverse osmosis membrane, wherein the metal fullerene is preferably Gd@C82, ie., metal gadolinium embedding C82. The present invention further provides a preparation method of the reverse osmosis membrane, wherein the method comprises: preparing a water phase solution with m-phenylenediamine dissolved inside and an oil phase solution with trimesoyl chloride dissolved inside, dissolving fullerene in the oil phase solution or dissolving hydroxylated fullerene in the water phase solution, and carrying out interfacial polymerization to obtain the reverse osmosis membrane. According to the present invention, the a unique cage-like structure, the nanometer pore structure and the good water molecule mass transfer channel effect of the metal fullerene are utilized to introduce the metal fullerene into the polyamide separation layer, such that the water flux and the salt rejection rate of the reverse osmosis membrane can be effectively improved, and the reverse osmosis membrane has good antibacterial property.

This invention provides improved methods for the derivatization and solubilization of fullerenes, which are particularly useful for those fullerenes that are normally insoluble and which are specifically applied, among others, to endohedral fullerenes, including endohedral metallofullerenes; empty fullerenes, including small-bandgap fullerenes and other insoluble fullerenes and to very high molecular weight fullerenic materials generated in fullerenic soot, including giant fullerenes, fullerenic polymers, carbon nanotubes and metal-carbon nanoencapsulates. More specifically the invention relates to improved methods for cyclopropanation of fullerenes. Specific reaction conditions are provided which allow for cyclopropanation reactions to be successfully performed for the first time on insoluble classes of fullerenes. Also provided is a method for purification of one or more fullerenes from a fullerenic material containing the one or more fullerenes in addition to non-fullerenic carbonaceous material, particularly amorphous carbonaceous material, by derivatizing one or more fullerenes using the methods of the invention and separating soluble derivatizes fullerenes from insoluble materials.

The magnetic resonance imaging contrast medium based on metal fullerene has the molecular expression of Gd@C82OHx(NH2CH2CH2COOH)y.Gd@C82OHx(HNCH2CH2SO3H)y, where x=16-22 and yú¢6-8. The preparation process is the neucleophilic addition reaction between metal fullerene material Gd@C82 and the alkali solution of beta-alanine or amino ethyl sulfuric acid to form the water- soluble metal fullerene derivative with decorating carboxyl radical or sulfo radical. The preparation process is simple and mild, and may be used in industrial production. The water- soluble derivative of the present invention has magnetic resonance imaging efficiency obviously higher than available Gd-divinyl triamino penta acetic acid chelate.

The invention relates to a metallic fullerene compound as well as a preparation method and applications of the metallic fullerene compound. The metallic fullerene compound is micro-nano particles obtained by compounding metallic fullerene or a derivative of metallic fullerene with a medical carrier through covalent bonds or non-covalent bonds. The preparation method of the metallic fullerene compound comprises the following step: bonding metallic fullerene to the medical carrier through the non-covalent effect or bonding the derivative of metallic fullerene with the medical carrier through the covalent effect. As the medicine for realizing the targeted diagnosis and / or treatment on tumor, the metallic fullerene compound is safe and non-toxic, has the aggregating size being 1-500 nm in an aqueous solution, can be effectively gathered to the tumor location through blood circulation by utilizing the EPP effect, has no toxic or side effect for the normal biological tissue, and has extremely high biosecurity, the targeted diagnosis and / or treatment on malignant tumor is realized, the use dosage of the antitumor drugs is reduced, and meanwhile, the metallic fullerene compound has high tumor targeting property, and has a broad prospect in the diagnosis and treatment integrated application of tumor.

The invention provides a metal-organic framework compound-metal fullerene compound and a preparation method thereof. The method is characterized in that a metal-organic framework compound material is immersed into a metal fullerene organic solution to obtain a mixing system of the metal-organic framework compound-metal fullerene compound. The metal-organic framework compound material takes organic carboxylic acid as an organic ligand and takes transition metal as a node for constitution; the metal fullerene is selected from at least one of the followings: M@C2n, M2@C2n, M3N@C2n, M3CN@C2n, M2C2@C2n, M3C2@C2n,and M2@C79N, wherein M is Sc, Y and lanthanide metals, and n is 30-50. The metal-organic framework compound is used for absorbing metal fullerene, and a metal fullerene structure with monodispersity under a solid state.

The invention provides an oxidized graphene-metallic fullerene compound. The oxidized graphene-metallic fullerene compound comprises oxidized graphene and metallic fullerene. The metallic fullerene is loaded to the surface of the oxidized graphene under pi-pi interaction. The invention further provides a method for preparing the oxidized graphene-metallic fullerene compound and application of the oxidized graphene-metallic fullerene compound as a magnetic resonance imaging contrast agent. The oxidized graphene-metallic fullerene compound, the method and the application have the advantages that the metallic fullerene is loaded on the surface of the oxidized graphene in a pi-pi interaction mode, the method is simple, complicated surface modification effects can be omitted, and the oxidized graphene-metallic fullerene compound is excellent in water solubility, stability, biocompatibility and relaxation property and is quite suitable to be used as the MRI (magnetic resonance imaging) contrast agent.

The invention discloses a method for extracting endohedral metallofullerene in the technical field of fullerene extraction. The method for extracting the endohedral metallofullerene comprises the specific steps: S1, filling a pre-treated mixture of various rare-earth oxides and graphite powder in a deep hole; S2, enabling the rare-earth oxides to be changed into rare-earth carbides; S3, discharging to generate soot; S4, carrying out reverse discharging, so that a carbon deposition rod is consumed into soot; S5, extracting coarse ashes; S6, drying the extracted coarse ashes in a vacuum manner; S7, collecting and extracting the soot; S8, removing and drying the rest soot; S9, putting the ashes into a high pressure kettle to be extracted; S10, pumping, filtering and drying an extracting solution. According to the method for extracting the endohedral metallofullerene, the ashes generated in the discharging process are further extracted, so that the ashes can be sufficiently utilized and the content of high fullerenes in the product is obviously increased to develop a shortcut for further enrichment, separation and purification of the endohedral fullerene; therefore, the method for extracting the endohedral metallofullerene is especially suitable for larger-scale extraction.