156results about "Lead organic compounds" patented technology

The invention refers in a first aspect to self-supporting film comprising green luminescent crystals (1), red luminescent crystals (2), and a polymer (3). The green luminescent crystals (1) are perovskite crystals. The red luminescent crystals (2) are zincblende or wurzite, preferably zincblende, crystals. A second aspect of the invention refers to a solid polymer composition (100). A third aspect of the invention refers to a light emitting device comprising either the solid polymer composition (100) or the self-supporting film.

The present disclosure relates to a perovskite system comprising a perovskite film including perovskites having a three-dimensional heterostructure of formula ABX3 characterized by a tetragonal perovskite surface. A comprises at least one of methylammonium, formamidinium, cesium, or guanidinium. B is Pb or Sn. X comprises at least one of I, Br, or Cl. The perovskite system further comprises an interfacial capping layer including anilinium-based surface-capping ligands, the ligands being distributed at the tetragonal perovskite surface of the perovskite film and non-reactive with the perovskites, as determined by time-of-flight secondary ion mass spectrometry. Also described are methods of preparing the perovskite system, and solar cells or modules comprising the perovskite system.

Metal halide perovskite crystals, composite materials that include metal halide perovskite crystals and a polymeric matrix material, devices that include metal halide perovskite crystals, and methods of forming metal halide perovskite crystals, composite materials, and devices. The devices may include optoelectronic devices, such as light-emitting diodes. The light-emitting diodes may emit red light.

The invention discloses a method for improving the stability of metal halide perovskite, a material and application, belongs to the technical field of semiconductor photoelectric devices, and mainly relates to a method for improving the stability of the metal halide perovskite by doping methylene diamine cations (CH2 (NH3) 22 + and MDA < 2 + >) at a site A of a halide perovskite lattice and application of the method. The methylenediamine cation realizes substitution doping of halide perovskite by substituting part of monovalent A-site host cations in a perovskite crystal growth process, and becomes a divalent organic cation which has a proper ion size and can be doped into a lattice A site; the high charge number of the material can form stronger electrostatic interaction with halogen anions which are easy to move in perovskite, so that the migration difficulty of the halogen anions is increased. By doping multivalent cations at the position A of a perovskite lattice, perovskite ion migration is inhibited, phase separation is inhibited, and an important thought and method are provided for preparing efficient and stable perovskite photovoltaic devices and laminated solar cells.

The invention relates to a low-dimensional perovskite single crystal, a low-dimensional / three-dimensional perovskite thin film, a perovskite solar cell and a preparation method of the low-dimensional perovskite single crystal, the low-dimensional perovskite single crystal is specifically obtained by synthesizing organic spacer molecule benzimidazole or a derivative thereof, so that the variety range of low-dimensional perovskite is widened; meanwhile, the low-dimensional perovskite single crystal is applied to a three-dimensional perovskite material, the three-dimensional perovskite material is modified and improved, a low-dimensional / three-dimensional perovskite thin film with higher crystallinity and stronger hydrophobicity is prepared, and the low-dimensional / three-dimensional perovskite thin film is further used as a light absorption layer of the perovskite solar cell. Finally, the purpose of improving the energy conversion efficiency of the perovskite solar cell is achieved.

To provide compounds that addresses challenges such as a relatively low radiobiological effectiveness (RBE) and suboptimal biodistribution.SOLUTION: The present invention relates to complexes comprising a prostate-specific membrane antigen (PSMA) targeting compound linked to a radionuclide, such as 212 Pb or 227Th, through a TCMC or DOTA chelating moiety. These compounds and pharmaceutical compositions comprising them can be used for medical applications. These applications include treatment of prostate cancer, and the complexes allow dual targeting of cancers.SELECTED DRAWING: Figure 1

The invention provides a room-temperature high-chemical-yield ultrasonic enhanced droplet microfluidic synthesis method of perovskite quantum dots. The method comprises the following steps: manufacturing a droplet microfluidic reaction chip with a two-section series double-T-shaped structure, and coupling the droplet microfluidic reaction chip with an ultrasonic vibrator to form a reaction system; the precursor solution, the ligand solution and the acetonitrile solution are injected into a droplet microfluidic reaction chip in proportion, and an ultrasonic vibrator is started to carry out ultrasonic enhancement on the reaction solution. And centrifugally drying the product to obtain the perovskite quantum dots. Compared with the prior art, the method has the following beneficial effects: 1, mass transfer between two phases is accelerated through ultrasonic treatment, the reaction process is enhanced, and the chemical yield and efficiency of the quantum dots are improved; 2, the size of the quantum dots can be regulated and controlled by adjusting the flow rate ratio and the ultrasonic power; 3, the specific surface area of reactants can be increased by utilizing the constructed reaction system, and the reaction conditions can be accurately controlled; and 4, the reaction system is high in automation compatibility degree and suitable for distributed continuous production.

The disclosure relates to a display device for displaying information, comprising at least one layer unit operable to change the quantity of light rays to pass through the layer unit, at least one display unit configured to display an image, wherein the at least one layer unit comprises or consists, mainly or fully, of at least one metal halide perovskite. The disclosure also relates to a display system comprising the display device as well as a method for changing the transparency while displaying information and a method for producing the display device or the display system.

The present application provides a large-area perovskite layer and a preparation method thereof. The preparation method includes: dissolving raw materials of a perovskite in an ionic liquid or in a mixture of the ionic liquid and an organic solvent, thereby forming a perovskite precursor, and coating the perovskite precursor onto a surface of a crystalline silicon bottom cell, thereby forming the perovskite layer. In the present application, the raw materials of the perovskite are dissolved in the ionic liquid or in the mixture of the ionic liquid and the organic solvent to form the perovskite precursor, reducing an influence of ambient moisture and oxygen on the perovskite precursor, allowing for the preparation of the perovskite layer in an air atmosphere, and further in combination with the coating method, allowing for the preparation of the large-area perovskite layer, which is suitable for an industrial production.

Disclosed herein are compounds that target carbonic anhydrase 9 (CA IX) (such as compounds of structural formula (I) or (II) wherein values for variables are as described herein) and methods for the prevention and / or treatment of certain cancers, including solid tumors, using such compounds. Also disclosed herein are pharmaceutically acceptable salts of such compounds and pharmaceutical compositions comprising such compounds or salts for use in such methods of preventing or treating cancers.

A solar cell 10 according to the present disclosure comprises a first electrode 2, a photoelectric conversion layer 4, a hole transport layer 5, and a second electrode 6. The photoelectric conversion layer 4 contains a perovskite compound. The hole transport layer 5 includes a supporting salt material and a supporting salt dispersion material. In the solar cell 10, a value obtained by dividing a substance amount of the supporting salt dispersion material by a substance amount of the supporting salt material is greater than 0 and equal to or less than 0.4.

A process for producing an organic-inorganic perovskite layer including the following steps: Forming of a layer of inorganic precursors on a substrate, Implementation of a step of close space sublimation from a powder including the organic precursors, whereby the vapors from the layer of organic precursors react with the layer of inorganic precursors and a hybrid organic-inorganic perovskite layer is formed, the powder of organic precursors being obtained by mechanosynthesis by co-grinding at least a first group of particles of a first material and a second group of particles of a second material to form a third group of particles of a third material, the third group of particles forming the powder of organic precursors.

The invention is suitable for perovskite luminescent materials, and provides a lead-containing perovskite luminescent material, the luminescent material is a one-dimensional hybrid lead bromide perovskite luminescent material, the chemical formula is (C6N10H8) Pb2Br6, and the preparation method comprises the following steps: dissolving lead acetate trihydrate and hexamethyl ammonium bromide in hydrobromic acid together; slowly heating in a methyl silicone oil bath, and stirring until a clear solution is formed to obtain a precursor solution; and cooling the precursor solution to room temperature to generate a colorless prismatic crystal, namely (C6N10H8) Pb2Br6. The invention further provides a method for tuning the light-emitting color gamut of the lead-containing perovskite light-emitting material. The invention also provides a multi-color-gamut-covered perovskite luminescent material and an application of the multi-color-gamut-covered perovskite luminescent material in preparation of photoelectric devices. According to the invention, pressure-induced FE emission is realized in one-dimensional (1D) hybrid lead bromide perovskite (C6N10H8) Pb2Br6 ((HM) Pb2Br6), accurate conversion from an ST-FE luminescence mechanism and effective tuning of a luminescence color gamut are realized, and the photoluminescence intensity of the material under fixed exciting light is improved.

The present invention relates to the field of radioactive drugs, specifically to radionuclide-labeled boron-containing drugs and their preparation methods. The boron-containing drugs are obtained by labeling them with at least one radionuclide, and the boron-containing drugs are obtained by polymerization of dopamine and its derivatives with boron-containing compounds. The radionuclide-labeled boron-containing drugs of the present invention have tumor-targeting properties. A method for labeling a radionuclide to a boron-containing drug via complexation or covalent bonding is also provided.

The invention discloses a quantum dot precursor, a preparation method thereof and a quantum dot, and relates to the field of quantum dots. The structural formula of the quantum dot precursor is as shown in a formula (I): # imgabs0 #. The quantum dot precursor provided by the invention is high in stability.

The present invention provides a thin film comprising a perovskite halide represented by chemical formula 1.AB(BrxCly)3   [Chemical formula 1]wherein, A is a monovalent cation consisting of a combination of NH2CHNH2+ (formamidinium, FA), CH3NH3+ (methyl ammonium, MA) and Cs+, wherein FA is included in an amount of 0.2-0.8 moles with respect to 1 mole of the monovalent cation, B is at least one divalent cation selected from Pb2+, Sn2+, Ge2+, Ti2+, Zr2+, Mn2+, Ni2+, Fe2+, Zn2+and Cu2+, and x and y satisfy 0.5≤x≤0.8, 0.2≤y≤0.5, and x+y=1.

Photoactive materials comprising organic-inorganic hybrid halide perovskite compounds are provided. Photovoltaic cells and light-emitting devices incorporating the photoactive materials into their light-absorbing and light-emitting layers, respectively, are also provided. The halide perovskites have an amAMX3 perovskite crystal structure, wherein am is an alkyl diamine cation, an aromatic diamine cation, an aromatic azole cation, a cyclic alkyl diamine cation or a hydrazinediium cation; A is a monovalent alkylammonium cation or an alkali metal cation; X is a halide ion or a combination of halide ions; and M is an octahedrally coordinated bivalent metal atom.

The present invention provides a method for forming a crystal or polycrystalline layer of an organic-inorganic metal halide perovskite material, wherein the organic-inorganic metal halide perovskite material comprises a three-dimensional crystal structure represented by the formula AMX3, wherein A represents an organic cation or a mixture of two or more different cations, at least one of which is an organic cation, M represents a divalent metal cation or a mixture of two or more different divalent metal cations, and X represents the same or different halide anions, the method comprising the following steps: (i) forming a first layer on the surface of a substrate, the first layer comprising an organic-inorganic metal halide perovskite material having a planar, layered two-dimensional crystal structure; (ii) reacting the first layer with one or more organic halides to form a crystal or polycrystalline layer comprising an organic-inorganic metal halide perovskite material having the formula AMX3. A photovoltaic or photovoltaic device is also provided, comprising an active layer, the active layer comprising an organic-inorganic metal halide perovskite material, the organic-inorganic metal halide perovskite material comprising a three-dimensional crystal structure represented by the formula AMX3, wherein the material can be obtained using the method defined above.

The present disclosure relates to a low-dimensional perovskite single crystal, a low-dimensional / three-dimensional perovskite film, a perovskite solar cell and a preparation method, the low-dimensional perovskite single crystal is synthesized by using an organic spacer molecule benzimidazole or a derivative thereof, thereby widening the variety range of low-dimensional perovskite; meanwhile, the low-dimensional perovskite single crystal is applied to three-dimensional perovskite material, the three-dimensional perovskite material is modified, a low-dimensional / three-dimensional perovskite film with higher crystallinity and stronger hydrophobicity is prepared, the low-dimensional / three-dimensional perovskite film is used as a light-absorbing layer of a perovskite solar cell, and finally the purpose of improving the energy conversion efficiency of the perovskite solar cell is achieved.

The invention provides a quasi-two-dimensional perovskite material, a perovskite solar cell and a preparation process. The structural general formula of the quasi-two-dimensional perovskite material is L2BX4, the L2BX4 is obtained through reaction of LX and BX2, X-site ions in the LX and the BX2 are halide ions, and B-site ions in the BX2 are divalent cations; the structural general formula of the LX is the general formulas I-IV provided by the invention; the quasi-two-dimensional perovskite material provided by the invention has relatively high stability and excellent photoelectric property, so that the perovskite solar cell prepared from the quasi-two-dimensional perovskite material shows relatively high stability and excellent photoelectric property.

The capacitor includes a first electrode, a second electrode, and a dielectric, the dielectric being disposed between the first electrode and the second electrode, the dielectric including a crystal having a composition of APb2X5, where A is a cation that is a molecular ion including a nitrogen atom, and X is a halogen element.

A method for preparing three-dimensional perovskite nanopixels of a digital display is provided. The method includes steps of preparing precursor ink by mixing methylammonium halide and lead halide and adding them into another mixture, adding the precursor ink into a nanopipette, placing the nanopipette with the precursor ink above a silicon substrate and apart from the silicon substrate by a certain distance, configuring the nanopipette to come into contact with the Si substrate such that a portion of the precursor ink having an interface surface of a shape of a meniscus is formed between the nanopipette and the silicon substrate, performing rapid evaporation of the portion of the precursor ink to facilitate crystallization of perovskite, moving the nanopipette upwardly at a constant speed such that the crystallization of perovskite proceeds upwardly, and terminating the crystallization of perovskite to generate a freestanding nanopixel for emitting light.

The present invention relates to compounds of general formula (I) for use as complexing agents. The invention further relates to the coordination compounds thereof, peptide conjugates, method of their preparation and use thereof.

A light-emitting layer for a halide perovskite light-emitting device, a method for manufacturing the same and a perovskite light-emitting device using the same are disclosed. The light-emitting layer can be manufactured by forming a first nanoparticle thin film by coating, on a member, a solution comprising halide perovskite nanoparticles having a halide perovskite nanocrystalline structure. Thereby, a nanoparticle light emitter has therein a halide perovskite having a crystal structure in which FCC and BCC are combined; and can show high color purity. In addition, it is possible to improve the luminescence efficiency and luminance of a device by making perovskite as nanoparticles and then introducing the same into a light-emitting layer.

The present invention provides a metal-binding compound according to compound 1: Ch-O-(CH2)n-O-C(O)-C(R)-(CH2)m-B Compound 1 wherein Ch is selected from any neutral chelating ligand, n is 1 to 12, m is 0 to 3, R is selected from amine, amide, carbamide and carbamate optionally substituted with C1 to C6 linear or branched alkyl (eg –NHC(O)OH, –NHC(O)OCH3, –NHC(O)OCH2CH3, – NHC(O)Otertbutyl), and B is phenyl group substituted by one to five optionally protected hydroxyl groups.

Disclosed herein are compounds that target carbonic anhydrase 9 (CA IX) (such as compounds of structural formula (I) or (II) wherein values for variables are as described herein) and methods for the prevention and / or treatment of certain cancers, including solid tumors, using such compounds. Also disclosed herein are pharmaceutically acceptable salts of such compounds and pharmaceutical compositions comprising such compounds or salts for use in such methods of preventing or treating cancers.

The invention discloses a D-J type two-dimensional perovskite LPbI4 single crystal based on organic ligands with different chain lengths as well as a preparation method and a luminescence regulation and control method of the D-J type two-dimensional perovskite LPbI4 single crystal, and belongs to the technical field of lead halogen perovskite materials. According to the preparation method, solid PbI2 and an organic ligand are subjected to a chemical reaction in an HI solution, the growth process of the two-dimensional perovskite LPbI4 single crystal is controlled by adjusting the raw material ratio, the reaction heating temperature and the annealing temperature and time, and the two-dimensional D-J type perovskite LPbI4 single crystal with n being equal to 1 is finally prepared. According to the invention, double-color emission can be generated without doping, meanwhile, pulse exciting light with different power densities or pulse frequencies can be utilized to excite, regulate and control the light-emitting color, the light-emitting color continuously changes from blue to red along with the increase of the exciting light pulse power or frequency, and the light-emitting color is reversible. The synthesis process has the characteristics of simplicity, environmental protection, small pollution and the like, the crystal quality is high, the single crystal shape is more regular, and the luminescence color regulation and control method is simple and convenient.

The invention relates to the technical field of luminescent materials, and particularly discloses application of a (C7H7N2) 2PbBr4 fluorescent material. The invention also discloses application of the (C7H7N2) 2PbBr4 fluorescent material in pressure calibration. Through pressure engineering, the wide-range emission of the fluorescence of the (C7H7N2) 2PbBr4 fluorescent material from purple blue light to yellow green light can be effectively adjusted. The (C7H7N2) 2PbBr4 fluorescent material after pressure application has good optical properties, and has potential application values in the fields of pressure sensors, biological imaging, information storage and the like.

The present invention provides quantum dot (QD)-in-matrix materials for use in blue light emitting diodes, wherein the QD-in-matrix material comprises a plurality of quantum dots embedded in a doped lead perovskite matrix.