Abstract: The present disclosure provides a bimetallic coordination metal-organic framework material, a preparing method thereof, and an application thereof. In the bimetallic coordination metal-organic framework material, carboxyl groups and soft groups of ligands are coordinated with coordination metal ions to assemble a structure having space and functions divided into covalent charge carrier layers and charge storage ion layers. Further, through the conjugation effect, the bimetallic coordination metal-organic framework material has unique electromagnetic properties, good electrical conductivity, and magnetic coupling performance. Thus, the bimetallic coordination metal-organic framework material is used as superconducting materials, conductive materials, semiconductor materials, or electromagnetic materials.

Abstract: Provided herein is a method of preparing a ceramic material, the method including: providing a ceramic gel including a plurality of metal salts and compressing the ceramic gel thereby inducing stress-induced mineralization of the ceramic gel and formation of the ceramic material, wherein the ceramic gel exists in isolated form.

Abstract: The present disclosure provides a bimetallic coordination metal-organic framework material, a preparing method thereof, and an application thereof. In the bimetallic coordination metal-organic framework material, carboxyl groups and soft groups of ligands are coordinated with coordination metal ions to assemble a structure having space and functions divided into covalent charge carrier layers and charge storage ion layers. Further, through the conjugation effect, the bimetallic coordination metal-organic framework material has unique electromagnetic properties, good electrical conductivity, and magnetic coupling performance. Thus, the bimetallic coordination metal-organic framework material is used as superconducting materials, conductive materials, semiconductor materials, or electromagnetic materials.

Abstract: A method for making inorganic mineral hydrogels is provided. In one aspect, a first solution including one or more metal cations from one or more inorganic precursors is used. The metal cations are one or more of Fe, Mg, Ca, Co, Ni, Zn, Ti, Cu, Sn, or Mn. A second solution includes one or more polyoxometalates of Mo, W, V, Nb, or Ta. The first and second solutions are mixed together to form the inorganic mineral hydrogel. In one example, an aqueous solution of ferric chloride hexahydrate (FeCl3·6H2O) is mixed with an aqueous solution of ammonium molybdate tetrahydrate ((NH4)6Mo7O24·4H2O), under ambient conditions. The two reactants first form a yellow precipitate (FeMo2Ox(OH)y), which subsequently dissolves back into the solution to gradually produce a viscous hydrogel that traps a large volume of water.

Abstract: Provided herein is a method of preparing a ceramic material, the method including: providing a ceramic gel including a plurality of metal salts and compressing the ceramic gel thereby inducing stress-induced mineralization of the ceramic gel and formation of the ceramic material, wherein the ceramic gel exists in isolated form.

Abstract: The present invention relates to a compound for use in an optoelectronic device including a heterojunction. The heterojunction includes a metal-organic framework optimized for operation as an electron transport layer in an optoelectronic device.

Abstract: Provided herein is a method of preparing a ceramic material including the steps of providing a ceramic gel comprising a plurality of metal hydroxides and a solvent; and subjecting the ceramic gel to a drying process thereby removing at least a portion of the solvent and forming the ceramic material; and ceramic gels useful for preparing molded ceramic structures.

Abstract: The present invention relates to a compound for use in an optoelectronic device including a heterojunction. The heterojunction includes a metal-organic framework optimized for operation as an electron transport layer in an optoelectronic device.

Abstract: A porous titanium dioxide film having photonic properties is made by etching a titanium substrate in an electrolyte solution in the presence of an electric field. The electrolyte solution can be an organic electrolyte solution. Etching involves providing an electrolyte solution in contact with a pair of electrodes and passing an electric current through the electrolyte solution. The titanium substrate can be one of the pair of electrodes. The current has a wave profile selected from a group consisting of a periodic square profile, a sine wave, a linear profile, or a quintic profile, and is provided either parallel to or perpendicular to a plane of the substrate.

Abstract: A foraminous microstructure or film that has photonic or plasmonic properties is made by forming a structure or film composed of at least two constituent materials so that the compositional ratio of the constituent materials varies in a depth direction of the structure, and then removing one of the materials from the structure.

Abstract: A porous titanium dioxide film having photonic properties is made by etching a titanium substrate in an electrolyte solution in the presence of an electric field. The electrolyte solution can be an organic electrolyte solution. Etching involves providing an electrolyte solution in contact with a pair of electrodes and passing an electric current through the electrolyte solution. The titanium substrate can be one of the pair of electrodes. The current has a wave profile selected from a group consisting of a periodic square profile, a sine wave, a linear profile, or a quintic profile, and is provided either parallel of perpendicular to a plane of the substrate.

Abstract: A foraminous microstructure or film that has photonic or plasmonic properties is made by forming a structure or film composed of at least two constituent materials so that the compositional ratio of the constituent materials varies in a depth direction of the structure, and then removing one of the materials from the structure.