67 results about "Organic crystal" patented technology

The present invention relates to crystalline solids comprising organic molecules and to the use of the crystalline materials in optical films and electro-optical devices.

The invention relates to a labeling technique formed by using molecular organic crystals having non-reproducible random position, shape, color and orientation, as well as specific fluorescence emission and physicochemical properties.

The application relates to an inorganic chloride-doped polymer electrolyte hybrid dielectric film material and a preparation method and application thereof, and belongs to the technical field of dielectric film materials and devices. The inorganic chloride-doped polymer electrolyte hybrid dielectric film material has significantly enhanced capacitance and ion migration capacity, can be used for developing an organic transistor memory with multi-level response to different pulse voltages, and can realize a wide memory window of 0.548 volts at a low working voltage of-1.5 volts. The memory also has good static and dynamic storage characteristics, and can realize accurate regulation and identification of different sizes of memory windows through programming gate pulse voltage. The novel polymer electrolyte hybrid dielectric film material and the organic transistor memory with multi-level storage characteristics thereof have the advantages of simple structure, excellent performance, easy scale-up manufacturing and the like, and will have good popularization and application prospects in the field of low-power-consumption optoelectronic devices and storage technologies.

The invention belongs to the technical field of semiconductor materials and devices, and discloses a photoelectric functional material for an organic transistor and a preparation method and application of the photoelectric functional material. A C-H activation strategy is adopted, two kinds of novel organic conjugated small molecules p-Ph2FTT and o-Ph2FTT containing F.H non-covalent bond conformation locks are synthesized, and the novel organic conjugated small molecules p-Ph2FTT and o-Ph2FTT containing F.H non-covalent bond conformation locks are synthesized. The molecule has excellent planarity, wide forbidden band (2.8 eV) and low HOMO energy level.

The present invention relates to methods for preparing organic crystals based on precursor solutions containing organic molecules, to crystalline solids obtained from the methods and to the use of the crystalline materials in optical films and electro-optical devices.

The invention relates to the technical field of novel electron-deficient acceptor units, polymer synthesis and organic electronic materials, in particular to an asymmetric boron-nitrogen condensed acceptor unit with a skeleton containing boron-nitrogen coordination bonds and a boron-nitrogen condensed ring structure, and preparation and application thereof. A boron-nitrogen condensed receptor unit with a strong electron deficiency characteristic is prepared through a Stille coupling reaction, a boron-nitrogen condensation reaction and a bromination reaction, and a high-performance boron-nitrogen condensed polymer with a deep LUMO energy level is further prepared. The boron-nitrogen fused polymer is used as the organic semiconductor layer, so that the prepared organic field effect transistor shows relatively high electron mobility. According to the invention, efficient synthesis of electron-deficient acceptors and preparation of high-electron-mobility organic transistors are realized, application of n-type organic polymer materials in the field of organic photoelectricity and the field of flexible electronic display is promoted, and the n-type organic polymer material has important significance in industrialization of high-performance organic electronic devices.

The invention belongs to the technical field of application of film functional materials, and relates to a film coating method of an organic crystal and a method for improving terahertz wave emission efficiency of an organic nonlinear crystal. According to the method, the two surfaces of the organic crystal can be plated with antireflection films, Fresnel reflection loss generated on the surface of the organic crystal by incident light in the optical application process of the organic crystal is reduced, and the effect of improving the terahertz emission efficiency by antireflection of the incident light in the organic crystal is achieved; meanwhile, the purposes of protecting the organic crystal material and preventing deliquescence can be achieved. A thin film material CYTOP is selected, firstly, the thickness of the antireflection film to be plated is calculated according to the light propagation theory, the rotating speed of a spin coater and the spin coating duration are controlled through a spin coating method, the drying time is accurately controlled, and the antireflection film is formed on the surface of the organic nonlinear crystal. Compared with an uncoated crystal, the terahertz emission signal time domain enhancement efficiency is at least improved by 16.7%, the terahertz emission signal frequency domain enhancement efficiency is at least improved by 16.5%, and the coated crystal can be stably stored in air for at least one year.

Aiming at the problem that an organic scintillation detector lacks a full-energy peak to a gamma ray response energy spectrum, so that the energy resolution is difficult to scale, the Compton coincidence measurement experiment is taken as a basis, the influence of an accidental coincidence event and an annihilation coincidence event is eliminated, and a quasi-Gaussian peak is formed at the Compton edge. An energy deposition spectrum of the true coincidence event is obtained through Monte Carlo simulation, and then the energy resolution at the Compton edge is calculated. Then, undetermined parameters of an expression are calculated by means of fitting of the energy resolutions, and the scale of the energy resolutions is achieved. By adopting the method, energy resolution calibration is carried out on the organic scintillation detector, and after the calibration result is added into Monte Carlo simulation, the simulation spectrum of the obtained detector to gamma rays is well matched with the actual measurement spectrum, and the accuracy of the method is verified. The organic scintillation detector energy resolution calibration method disclosed by the invention is simple to operate, good in accuracy, high in universality and suitable for energy resolution calibration of various plastic scintillation detectors, liquid scintillation detectors, organic crystal detectors and the like.

Provided is an organic transistor material characterized by having a trans-1,4-disubstituted cyclohexane structure derived from a compound represented by Formula (1). In Formula (1), X represents a skeleton in which plural phenylene groups or naphthylene groups are linked directly or via a vinyl group, a condensed polycyclic hydrocarbon skeleton, or a heterocyclic compound skeleton; m, n, p, and q each independently represent 0 or 1; and R1 and R2 each independently represent an alkyl group or haloalkyl group having 1 to 15 carbon atoms. This organic transistor material has high carrier mobility and excellent thermal stability.

The invention discloses solution method preparation and X-ray detection application of an ethyl p-hydroxybenzoate single crystal, and relates to the technical field of organic crystals. The method comprises the following steps: dissolving ethyl p-hydroxybenzoate powder in acetone, then adding petroleum ether to form a mixed solution, and then volatilizing the solution to obtain a seed crystal; placing the seed crystal in an acetone solution, placing the acetone solution in a sealed container, and carrying out crystal growth at 0-5 DEG C to obtain a large-size crystal; and cutting the large-size crystal along a crystal cleavage surface to obtain the ethyl p-hydroxybenzoate single crystal with a flat surface. According to the invention, the solution method preparation of the ethyl p-hydroxybenzoate large-size crystal is realized for the first time, the ethyl p-hydroxybenzoate large-size crystal is applied to direct X-ray detection, and a new technical scheme is provided for solving the problems of high cost, complex preparation and the like of a traditional detection material.

The application relates to a dual-gas response organic transistor sensor simulation design and a gas concentration decoupling method thereof, and belongs to the field of organic semiconductor device simulation and electronic technology. The method aims at the problem that existing gas monitoring technology cannot simultaneously consider low cost, room temperature operation and multi-component synchronous detection, and realizes the synchronous response and concentration accurate detection of a single organic transistor device to dual-component gas through the following steps: selection of gas-sensitive functional materials and their gas response key parameters, simulation design and electrical performance analysis of the dual-gas response organic transistor sensor, calculation of device electrical characteristic parameters and sensitivity, dual-gas signal data preprocessing and data set construction, dual-gas signal decoupling model construction and dual-gas concentration detection. The method improves the sensor integration and design efficiency, and realizes high-precision decoupling of mixed gas by using an algorithm, thereby providing technical support for the development of a sensing-storage-computing integrated intelligent gas sensing terminal related to gas monitoring of power system equipment.

The invention relates to a graphene-based high-switch-ratio vertical organic transistor and a preparation method thereof, and belongs to the technical field of organic semiconductor devices. The transistor comprises a first metal electrode, a rubrene single-crystal active layer, a second metal electrode, a single-layer graphene electrode, a silicon dioxide dielectric layer and a silicon substrate which are sequentially stacked from top to bottom, wherein the silicon substrate is also used as a grid electrode. The graphene electrode is prepared by a mechanical stripping method, and is transferred to the surface of silicon dioxide at a low temperature of 50-120 DEG C after being pretreated by ozone or plasma to form a porous structure so as to improve the vertical charge injection performance; the rubrene single crystal active layer is deposited through a two-step sublimation method, high crystal quality is obtained through annealing treatment, then the rubrene single crystal active layer is transferred to the surface of the graphene electrode by means of the flexible polymer microneedle, and interface defects are reduced. And finally, respectively depositing metal electrodes with the thickness of 20-80nm above and below the rubrene to construct a vertical organic transistor structure. The device shows excellent switching performance under the condition of low power consumption, the switching ratio is larger than 2.5 * 10 < 6 >, the off-state current density is not larger than 10 [mu] A / cm < 2 >, and the device is suitable for flexible logic devices and neuromorphic calculation application.

A micro-fluidic detection device includes a first base plate, a second base plate opposite to the first base plate, and a droplet travel layer located between the first and second base plates. The first base plate includes a first substrate, a drive array layer, a first electrode layer, and a first hydrophobic layer. The second base plate includes a second substrate, a second electrode layer, and a second hydrophobic layer. Drive electrodes of the first electrode layer are at first units. The first unit includes a micro-fluidic unit circuit. A second unit includes a detection unit circuit. The detection unit circuit includes inorganic transistors and organic transistors. A sensitive electrode is at the second unit. The sensitive electrode is on a side of a layer where the inorganic transistor is located away from the first substrate. A first hollow hole of the first base plate exposes the sensitive electrode.

The invention belongs to the technical field of organic photoelectric synaptic devices, and discloses a photochromic molecule, a response-speed-adjustable organic transistor prepared from the photochromic molecule and application of the photochromic molecule, a silicon substrate with SiO2 is cleaned with deionized water, alcohol and acetone under ultrasonic waves and dried with nitrogen, and the thickness of the SiO2 layer is 180-220 nm; the preparation method comprises the following steps: dissolving diarylethene photochromic molecules and polymethyl methacrylate in chloroform, stirring, and spin-coating on a silicon substrate with SiO2 to form a film; a PDPP2TBT solution is spin-coated on the thin film, annealing is carried out, and the concentration of the PDPP2TBT solution is 8-12 mg / mL; depositing a gold electrode by using a mask plate through thermal evaporation, wherein the thickness of the gold electrode is 55-65 nm; according to the invention, illumination of different wavelengths is utilized, the current rising rate and the current attenuation rate can be adjusted respectively, and then bidirectional dynamic regulation and control of the response speed of the robot are realized.

The application relates to the technical field of organic crystals, and particularly discloses a low-temperature-processed flexible organic crystal compound and a preparation method thereof, which comprises a low-temperature flexible organic crystal compound, the low-temperature flexible organic crystal compound is 2,3,5-trifluoro-6-((2-(2-hydroxyethoxy)ethyl)amino) p-phenylenedinitrile (THEAT), and the low-temperature flexible organic crystal compound exhibits flexibility and processability in a temperature range of 298K to 77K; the application exhibits good flexibility and processability of THEAT in a temperature range of 298K to 77K, the feature enables the material to still maintain physical performance and operability in a low-temperature environment, the low-temperature flexible and processable combination overcomes the shortcomings that traditional organic materials are brittle and difficult to process in a low-temperature environment, the low-temperature flexibility and processability make THEAT and similar materials have wide application prospects in multiple fields such as wearable devices, biocompatible sensors and soft robotics, and promote the cross integration and innovative development of material science.

The application discloses a free energy calculation method of an organic crystal. The method comprises the following steps: obtaining a crystal structure of the organic crystal, and initializing a calculation environment according to the crystal structure; performing a calculation operation on the crystal structure according to the initialized calculation environment to obtain a plurality of calculation results, wherein the calculation operation comprises a first calculation operation and a second calculation operation; and performing correction processing on the plurality of calculation results to obtain the vibration free energy of the crystal structure. The application also discloses a screening method of an organic crystal and related equipment. Through the first calculation operation and the second calculation operation on the crystal structure and the correction processing on the plurality of calculation results, the calculation cost of the crystal vibration free energy is reduced while the calculation precision is ensured.

The application discloses an organic superlattice material, a lithium-doped organic superlattice material and a preparation method and application thereof, and relates to the technical field of superlattice materials.The organic superlattice material comprises a first organic crystal layer and a second organic crystal layer which are alternately stacked, the first organic crystal layer comprises a network structure formed by a first small-molecule organic compound, and the second organic crystal layer comprises a network structure formed by a second small-molecule organic compound; wherein the first small-molecule organic compound comprises a first monocyclic aromatic compound, and the first monocyclic aromatic compound has a proton donor group; and the second small-molecule organic compound comprises a second monocyclic aromatic compound, and the second monocyclic aromatic compound has a proton acceptor group.A new organic superlattice material is provided, which is applied to a solid-state electrolyte and can improve ionic conductivity.

The present invention relates to crystalline solids comprising organic molecules and to the use of the crystalline materials in optical films and electro-optical devices.

The invention provides a flexible organic single crystal with a photoelectric property and a preparation method and application thereof, and belongs to the technical field of organic electronic devices, and after an organic semiconductor material containing benzothiadiazoloquinoxaline is dissolved in an organic solvent, the flexible organic single crystal with the photoelectric property is obtained through growth by a solution method. The organic semiconductor material of benzothiadiazoloquinoxaline is selected and dissolved in the organic solvent, and the organic single crystal grows through the solution method, so that the high-quality organic single crystal is obtained, and the size of the organic single crystal can be changed by controlling the growth temperature. The OFET device based on the organic crystal prepared by the method has obvious photoelectric property, and compared with a dark field condition, the threshold voltage can be obviously reduced under the irradiation of ultraviolet light or white light without obvious change of mobility, so that the establishment of a future high-performance photoelectric organic crystal material system is facilitated.

The application discloses a device and method for cutting fluoranthene crystal by using a photo-induced electric field of lithium niobate. The method uses a spatial electric field generated by laser irradiation of iron-doped lithium niobate to realize cutting of micron-size fluoranthene crystal under heating conditions. The whole device is simple to build, and realizes real-time control of the crystal cutting position and residual length. The technology can be applied to various applications of organic field effect transistors and other organic optoelectronics, and has important significance for processing and modification of organic crystals.

The present application is directed to the problem that the full energy peak is absent in the gamma ray response spectrum of an organic scintillation detector, which leads to the difficulty in calibrating the energy resolution. Based on the Compton coincidence measurement experiment, the influence of accidental coincidence events and annihilation coincidence events is eliminated, and a quasi-Gaussian peak is formed at the Compton edge. The energy deposition spectrum of true coincidence events is obtained by Monte Carlo simulation, and then the energy resolution at the Compton edge is calculated. Then the undetermined parameters of the calculation expression are fitted by using these energy resolutions, and the calibration of the energy resolution is realized. The energy resolution calibration of an organic scintillation detector is carried out by using this method, and after the calibration result is added to the Monte Carlo simulation, the simulated spectrum of the detector for gamma rays is in good agreement with the measured spectrum, which verifies the accuracy of the method. The organic scintillation detector energy resolution calibration method disclosed by the present application is simple to operate, good in accuracy and strong in universality, and is suitable for the energy resolution calibration of various plastic scintillators, liquid scintillators and organic crystals.

The invention discloses an efficient multi-scale solvent virtual screening method, and particularly relates to an efficient solvent virtual screening method based on Hansen solubility parameters, COSMO-RS and molecular dynamics simulation. According to the method, Hansen solubility parameters, COSMO-RS and molecular dynamics simulation are combined, the solvent suitable for the target organic crystal can be rapidly screened out from a solvent library, the time cost in the solvent screening process is reduced, and the process research and development progress is accelerated. The screening method does not limit the molecular structure of the target organic crystal, is high in universality and can be used for screening various organic crystal solvents.

The present invention discloses a controllably bendable two-dimensional organic crystal, its preparation method, and application. The preparation method comprises the following steps: dissolving an organic small molecule in a good solvent to obtain an organic small molecule solution; adding methanol to the organic small molecule solution to obtain a mixed solution; and dropwise adding the mixed solution to a substrate at 25 to 45°C. After evaporation of the solvent, the controllably bendable two-dimensional organic crystal is obtained. By regulating conditions such as the solvent and temperature during the crystal self-assembly process, the present invention achieves the controllable preparation of an organic polygonal crystal with a bendable structure. The resulting controllably bendable two-dimensional organic crystal can be used in optical waveguides to achieve flexible optical signal transmission. The production process is simple, easy to implement, and has good application prospects.

The application discloses a kind of 4-methyl 4-hydroxybenzoate organic single crystals and preparation method and application thereof, and relates to the technical field of organic crystal.The method comprises uniformly dispersing 4-methyl 4-hydroxybenzoate polycrystal material in acetone, then removing impurities and insoluble substances by filtration to obtain a filtered solution;the filtered solution is placed at 0-5℃ for 12-48 hours to obtain 4-methyl 4-hydroxybenzoate organic single crystals.The application effectively overcomes the problems of poor crystalline quality, small crystal size, complex process and high equipment requirement in the growth of existing 4MHB crystals by combining low-temperature solvent evaporation method with low-temperature seed crystal method, thereby realizing the growth of large-size and high-quality 4MHB single crystals.

A detection substrate including a substrate and a plurality of detection units disposed on a side of the substrate, each detection unit including at least an inorganic transistor, an organic transistor, and a photoelectric sensor element, the organic transistor including an organic semiconductor part, in a direction perpendicular to a plane of the substrate, a film layer where the organic semiconductor part is located being located on the side of the film layer where the inorganic transistor is located away from the substrate, the film layer where the organic semiconductor part is located being located on the side of a film layer where the photoelectric sensor element is located away from the substrate, the organic transistor of the detection unit being connected to a sensing electrode, the sensing electrode being located on the side of the film layer where the inorganic transistor is located away from the substrate.

The present invention provides an elastic organic crystal material with multi-level stimulus-responsive room temperature phosphorescence, a preparation method and its application. The elastic organic crystal material with multi-level stimulus-responsive room temperature phosphorescence is a single-component benzil derivative having a structure shown in general formula (I). After grinding or thermal annealing the organic single-component benzil derivative crystal, conversion between room temperature phosphorescences of different emission wavelengths can be achieved. After applying a certain external force to the upright organic small molecule crystal, it will undergo an elastic bending, and after the external force is removed, it will return to its original upright state. The single-component organic small molecule crystal optical material of the present invention has the properties of multi-level stimulus-responsive room temperature phosphorescence and elasticity, and can be used in optoelectronic devices, display materials, information storage materials or anti-counterfeiting materials.

The invention discloses a methyl 4-hydroxybenzoate organic single crystal as well as a preparation method and application thereof, and relates to the technical field of organic crystals. The method comprises the following steps: uniformly dispersing a methyl 4-hydroxybenzoate polycrystal material in acetone, and then filtering to remove impurities and insoluble substances to obtain a filtered solution; and standing the filtered solution at 0-5 DEG C for 12-48 hours to obtain the methyl 4-hydroxybenzoate organic single crystal. According to the invention, a low-temperature solvent evaporation method is combined with a low-temperature seed crystal method, so that the problems of poor crystal quality, small crystal size, complex process and high equipment requirement in the existing 4MHB crystal growth are effectively solved, and the large-size and high-quality 4MHB single crystal growth is realized.

This invention discloses a diphenylacrylonitrile-based flexible crystal material, its preparation method, and its applications, relating to the field of organic optoelectronic functional materials. The basic structure of this organic fluorescent material consists of a diphenylacrylonitrile core with different substituents as substituent groups. The deep red or near-infrared flexible fluorescent organic crystal material is obtained by dissolving the powdered material in a suitable solvent and slowly evaporating it. The fluorescent material prepared by this invention uses inexpensive and readily available raw materials, and the preparation method is simple. The flexible crystal can be bent to a semi-circle at any angle. The material prepared by this invention has good elastic mechanical properties and can be applied to flexible optoelectronic devices, display materials, information storage materials, or optical waveguide materials.

A low-temperature seed-induced growth method for salicylamide ultrafast scintillation crystals is disclosed, involving ultrafast scintillation crystals and their low-temperature seed-induced growth method. This method aims to solve the technical problems of uncontrollable growth rate, sensitivity to environmental fluctuations, easy generation of microscopic defects within the crystal, and poor dimensional regularity in existing organic crystal scintillators. The method comprises: 1. Obtaining high-quality seed crystals through isothermal volatilization; 2. Preparing a saturated growth solution; 3. Precise temperature equilibration treatment; 4. Seed crystal-induced slow volatilization growth. The salicylamide single crystals prepared by this method reach a size of 15mm × 9mm × 1.5mm. Its photo-induced decay time is approximately 5.93 ns. 137 The radioactive decay time under Cs excitation is approximately 2.82 ns, which can be used in the field of radiation detection.

The present invention relates to an organic crystal which is a co-crystal (AB) of one or more aromatic compounds (A) and one or more aromatic compounds (B), a co-crystal (BB) of two or more aromatic compounds (B), or a single crystal (B) of one aromatic compound (B), wherein: the aromatic compound (A) has two or more aromatic rings, and an electron-withdrawing group is not bonded to the aromatic rings; and the aromatic compound (B) has one or more aromatic rings, and an electron-withdrawing group is bonded to each of the aromatic rings.