Abstract: The present invention relates to a method for synthesizing ionic liquids comprising a carbonate functional group characterized in that it comprises a step of reaction A without addition of lithium between a first reactant selected among an imidazolium, a pyrrolidinium or an ammonium and a second reactant being a methyl formate imidazolium. The first reactant is an imidazolium alcohol, a pyrrolidinium alcohol or an ammonium alcohol salt, the anion of which is NTf2. The second reactant is a chloromethyl formate imidazolium. The application of this method will be found in the field of green chemistry and more specifically in the production of ionic liquids which can be used in lithium batteries with a graphite electrode.

Abstract: The present invention relates to a method for synthesizing ionic liquids comprising a carbonate functional group characterized in that it comprises a step of reaction A without addition of lithium between a first reactant selected among an imidazolium, a pyrrolidinium or an ammonium and a second reactant being a methyl formate imidazolium. The first reactant is an imidazolium alcohol, a pyrrolidinium alcohol or an ammonium alcohol salt, the anion of which is NTf2. The second reactant is a chloromethyl formate imidazolium. The application of this method will be found in the field of green chemistry and more specifically in the production of ionic liquids which can be used in lithium batteries with a graphite electrode.

Abstract: The invention relates to a composition for synthesizing bimetallic nanoparticles, wherein the composition contains a first organometallic precursor and a second organometallic precursor having different decomposition rates and contained within an ionic liquid solution. The invention also relates to a method for synthesizing bimetallic nanoparticles, in which the composition is transformed under a hydrogen gas pressure between 0.1 and 10 MPa at a temperature between 0 and 150° C. until a suspension of bimetallic nanoparticles is obtained. The resulting nanoparticles are useful in diverse fields including the fields of catalysis and microelectronics.

Abstract: A simple, inexpensive and non-corrosive industrial separation method making it possible to separate zirconium and hafnium tetrachlorides from mixtures thereof, a simple industrial method allowing the zirconium/hafnium separation, and a method making it possible to produce fractions enriched with zirconium and containing hafnium at a trace level are disclosed.

Abstract: A method for producing a memory device with nanoparticles, comprising the steps of: a) forming, in a semi-conductor substrate, source and drain regions, and at least one first dielectric on a zone of the substrate arranged between the source and drain regions and intended to form a channel of the memory device, b) deposition of an ionic liquid, comprising nanoparticles of an electrically conductive material in suspension, covering the first dielectric, c) formation of a deposition of nanoparticles on the first dielectric, d) removal of the remaining ionic liquid, e) forming a second dielectric and a control gate on at least one part of the deposition of nanoparticles.

Abstract: Drug delivery devices are provided that are configured to release drug following passive or active activation of the device protecting the drug contained therein. In one aspect, the device may be configured to release a drug following selective application of light irradiation to the device. In another aspect, the device is configured to a release drug following degradation of at least a part of the device body that is formed, for example, from a bioerodible, hermetic material. An exemplary bioerodible, hermetic material is a biodegradable glass. Still other aspects provide for release of a drug upon a combination of both passive and active activation of the device.

Abstract: A method for making electrical interconnections of carbon nanotubes, including a) depositing an ionic liquid including nanoparticles of at least one suspended electrically conducting material, covering at least one surface of an element configured to be used as a support for carbon nanotubes, b) forming a deposit of the nanoparticles at least against the surface of the element, c) removing the remaining ionic liquid, d) growing carbon nanotubes from the deposited nanoparticles, and further including between the c) removing the remaining ionic liquid and the d) growing carbon nanotubes, passivating the deposited nanoparticles not found against the surface of the element.

Abstract: A simple, inexpensive and non-corrosive industrial separation method making it possible to separate zirconium and hafnium tetrachlorides from mixtures thereof, a simple industrial method allowing the zirconium/hafnium separation, and a method making it possible to produce fractions enriched with zirconium and containing hafnium at a trace level are disclosed.

Abstract: Novel group 4 organometallic compounds, supported on anions by means of at least one covalent metal-oxygen bond, are obtained by reaction of at least one borate or aluminum comprising at least one hydroxy group with at least one group 4 transition metal compound. These compounds are used in a catalytic composition implemented in an olefin oligomerization or polymerization method.

Abstract: A method for producing a memory device with nanoparticles, including steps of: a) forming, in a substrate based on at least one semi-conductor, source and drain regions, and at least one first dielectric on at least one zone of the substrate arranged between the source and drain regions and intended to form a channel of the memory device, b) depositing of at least one ionic liquid that is an organic salt or mixture of organic salts in a liquid state, wherein nanoparticles of at least one electrically conductive material are suspended in the ionic liquid, said ionic liquid covering at least said first dielectric, c) forming a deposition of said nanoparticles at least on said first dielectric, d) removing the ionic liquid remaining on the first dielectric, and e) forming at least one second dielectric and at least one control gate on at least one part of the nanoparticles deposited on the first dielectric.

Abstract: The invention relates to a composition for synthesizing bimetallic nanoparticles, wherein the composition contains a first organometallic precursor and a second organometallic precursor having different decomposition rates and contained within an ionic liquid solution. The invention also relates to a method for synthesizing bimetallic nanoparticles, in which the composition is transformed under a hydrogen gas pressure between 0.1 and 10 MPa at a temperature between 0 and 150° C. until a suspension of bimetallic nanoparticles is obtained. The resulting nanoparticles are useful in diverse fields including the fields of catalysis and microelectronics.

Abstract: A method for making electrical interconnections of carbon nanotubes, including a) depositing an ionic liquid including nanoparticles of at least one suspended electrically conducting material, covering at least one surface of an element configured to be used as a support for carbon nanotubes, b) forming a deposit of the nanoparticles at least against the surface of the element, c) removing the remaining ionic liquid, d) growing carbon nanotubes from the deposited nanoparticles, and further including between the c) removing the remaining ionic liquid and the d) growing carbon nanotubes, passivating the deposited nanoparticles not found against the surface of the element.

Abstract: A method for producing a memory device with nanoparticles, comprising the steps of: a) forming, in a semi-conductor substrate, source and drain regions, and at least one first dielectric on a zone of the substrate arranged between the source and drain regions and intended to form a channel of the memory device, b) deposition of an ionic liquid, comprising nanoparticles of an electrically conductive material in suspension, covering the first dielectric, c) formation of a deposition of nanoparticles on the first dielectric, d) removal of the remaining ionic liquid, e) forming a second dielectric and a control gate on at least one part of the deposition of nanoparticles.

Abstract: Novel group 4 organometallic compounds, supported on anions by means of at least one covalent metal-oxygen bond, are obtained by reaction of at least one borate or aluminium comprising at least one hydroxy group with at least one group 4 transition metal compound. These compounds are used in a catalytic composition implemented in an olefin oligomerization or polymerization method.

Abstract: Compression cold welding methods, joint structures, and hermetically sealed containment devices are provided. The method includes providing a first substrate having at least one first joint structure which comprises a first joining surface, which surface comprises a first metal; providing a second substrate having at least one second joint structure which comprises a second joining surface, which surface comprises a second metal; and compressing together the at least one first joint structure and the at least one second joint structure to locally deform and shear the joining surfaces at one or more interfaces in an amount effective to form a metal-to-metal bond between the first metal and second metal of the joining surfaces. Overlaps at the joining surfaces are effective to displace surface contaminants and facilitate intimate contact between the joining surfaces without heat input. Hermetically sealed devices can contain drug formulations, biosensors, or MEMS devices.