39 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 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 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 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 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 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 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.

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.

To provide a polymer compound that exhibits excellent photoelectric conversion efficiency, a method for producing a polymer compound, an organic thin film solar cell, and an organic transistor.SOLUTION: A polymer compound includes a repeat unit represented by formula (1). In the formula (1), R1 is a hydrogen atom, a halogen atom or an alkyl group, Ar1 is specific arylene group.SELECTED DRAWING: Figure 1

The invention discloses a preparation method of an optical microcavity, relates to the technical field of semiconductor devices, and aims to solve the problem that an optical microcavity cannot be prepared on an organic crystal in the prior art. The method comprises the steps of providing a substrate; depositing and forming a first target layer number of laminated thin film layers on the substrate; forming an organic crystal layer on the surface of one side, far away from the substrate, of the first target layer number of laminated film layers; and forming a second target number of laminated film layers on the surface of one side of the organic crystal layer away from the first target number of laminated film layers to obtain the optical microcavity, the first target layer number is different from the second target layer number; therefore, the high-quality optical microcavity is prepared on the organic crystal.

The invention discloses a terahertz generation system based on perovskite and an organic crystal, and the system comprises a femtosecond laser pumping source which is used for generating femtosecond laser with high intensity and ultra-short pulse; the optical modulation unit is arranged on a light path between the femtosecond laser pumping source and the crystal sample and is used for modulating the wavelength, the intensity or the phase of the femtosecond laser; the sample bearing platform is used for placing a two-dimensional / zero-dimensional perovskite crystal or modified organic crystal sample; the terahertz signal detection unit is used for collecting and detecting terahertz radiation generated by the crystal sample; and the signal processing unit is used for analyzing the terahertz signal output by the detection unit. The invention discloses a terahertz generation system based on perovskite and organic crystals, and aims to overcome the defects of low conversion efficiency, limited tuning range, complex system or high cost in the existing terahertz generation technology.

The application discloses an organic crystal with low-temperature plastic torsional capacity and a preparation method and application thereof, and belongs to the technical field of organic optical functional materials, wherein the organic crystal comprises 4,4'-difluorobenzil molecules; the 4,4'-difluorobenzil molecules in the organic crystal are in parallel stacking in a crystal lattice, intermolecular hydrogen bonds of C-H...O and C-H...F and pi-pi stacking interaction form a slip surface structure, so that the organic crystal can be plastically twisted at a low temperature of not higher than 77K, and can permanently keep a deformed state after being twisted. The application breaks through the cold brittleness limitation caused by the freezing of molecular thermal motion at an extremely low temperature in traditional organic crystals. The organic crystal realizes perfect coupling of extreme mechanical deformation and excellent optical waveguide performance, and still keeps extremely low optical transmission loss even in a severe twisted state; meanwhile, the organic crystal shows unique mechanical-optical response characteristics, and can accurately linearly modulate an outgoing light polarization state through physical rotation or plastic torsion.

The invention discloses a light induction method and device for realizing controllable deformation of an organic crystal, and belongs to the technical field of optics. The light induction method for realizing the controllable deformation of the organic crystal, provided by the invention, comprises the following steps: performing fixed-point scanning on the surface of the organic crystal by utilizing pulse laser, and enabling the organic crystal to generate controllable deformation along a scanning path formed by fixed-point scanning. The organic crystal disclosed by the invention can absorb light efficiently through a conjugated system, absorb light energy of pulse laser and instantly convert the light energy into local heat energy to form lattice thermal expansion; the heat energy can rapidly penetrate through the organic crystal to form an instantaneous temperature difference, the temperature difference induces an asymmetric stress field to enable the organic crystal to deform along a scanning path, the deformation is reversible, and the organic crystal can recover to the original state when no pulse laser is irradiated.

The invention discloses an alkylated pentaptycene organic crystal material, a capillary gas chromatographic column as well as a preparation method and application of the capillary gas chromatographic column, and relates to the technical field of gas chromatography. The preparation method comprises the following steps: S1, adding p-benzoquinone, chloranil and naphthalene into acetic acid, and heating and refluxing to obtain an intermediate I; s2, dissolving the intermediate I, sodium thiosulfate and potassium carbonate in an N, N-dimethylformamide solution, heating, carrying out a reduction reaction, cooling after the reaction is finished, and carrying out post-treatment and purification on a product to obtain an intermediate II; and S3, dissolving the intermediate II and 2-hexyl bromoacetate in an acetone-DMF mixed solvent, carrying out a substitution reaction, and purifying and drying the product to obtain the alkylated pentaptycene organic crystal material. The invention provides a pentaptycene material with a structure different from that in the prior art, the types of gas chromatography stationary phases are enriched, and more optional technical schemes are provided for separation of complex mixtures.

This invention relates to the field of organic functional crystal growth technology, specifically a method for growing organic crystals based on the control of the included angle of the inner wall of a crucible. The method employs a quartz crucible with an axisymmetric conical inner cavity, and controls the included angle β of the inner wall of the crucible to be 10°–30°, preferably 15°–20°. After loading the organic crystal raw material into the crucible, a vacuum of 1×10⁻⁶ is applied. ‑2 After being sealed by welding, and after passing the pre-growth inspection and sealing, the melt is placed in a Bridgman crystal growth furnace for heating and melting and held at that temperature for 24 hours. The axial temperature gradient is controlled, and the melt is directionally solidified and grown from bottom to top at a rate of 1-1.5 mm / h. The organic single crystal is then slowly cooled to obtain the organic single crystal. This invention optimizes the melt flow field and solid-liquid interface by adjusting the crucible angle, reduces the radial temperature gradient, reduces defects such as crystal cracks and dislocations, and improves crystal integrity and optical uniformity. The process is simple, has good repeatability, and is suitable for large-size, high-quality growth of organic scintillation crystals and organic optoelectronic crystals.

The application provides an organic crystal structure prediction method, device, equipment and storage medium, wherein the method comprises: generating at least one organic crystal structure according to the condition vector of a compound, determining the calculation index parameter of each organic crystal structure, and determining the prediction index parameter according to the molecular structure of the compound, and finally, obtaining the stable organic crystal structure and its ranking according to the calculation index parameter, the prediction index parameter, the index parameter difference threshold value of calculation and prediction, and each intermediate organic crystal structure. Through the generation model, potential organic crystal structure generation can be performed, more organic crystal structures can be explored, and the calculation complexity is greatly reduced. Through the discrimination model, the organic crystal structure screening can be performed, and the calculation amount can be effectively reduced. The application couples the generation model and the discrimination model for organic crystal structure prediction, significantly reduces the calculation complexity under the premise of ensuring the prediction accuracy, and has high practicability.

The invention discloses an organic vertical cavity surface emitting laser and a preparation method thereof, relates to the technical field of semiconductor preparation, and aims to solve the problems that in the prior art, when a reflecting material layer is formed on the surface of an organic material layer through a traditional PVD or sputtering process, the coating uniformity is not easy to control, and the step coverage rate is relatively poor. The laser comprises a semiconductor substrate, a first distributed Bragg reflector, an organic crystal film layer and a second distributed Bragg reflector which are sequentially arranged from bottom to top, wherein the organic crystal film layer comprises a 4, 4-dicarbazole-stilbene organic micro-nano crystal film layer, a styrene organic micro-nano crystal film layer or a pentacene organic micro-nano crystal film layer, and each of the first distributed Bragg reflector and the second distributed Bragg reflector comprises a plurality of aluminum oxide film layers and hafnium oxide film layers which are alternately arranged. The reflecting film layer of the laser is uniform and controllable, and the laser has excellent reflectivity and other properties.

The invention discloses a light control device and method for realizing directional jumping of an organic crystal, and the device comprises a supporting module which is located at one end of the lower part of the organic crystal and is used for enabling one end, close to the supporting module, of the organic crystal to deflect upwards; the light source module is used for generating laser; the laser irradiates the surface of one end, far away from the supporting module, of the organic crystal; and the organic crystal generates directional jump under the excitation of the laser. Based on the light-crystal resonance enhancement effect, directional jumping of the organic crystal is achieved through the arrangement of the supporting module and the light source module, the jumping direction of the organic crystal is controllable, the jumping efficiency is high, the organic crystal after jumping is complete in shape, and the stability of the organic crystal is improved. By means of the device and the method, controllable, lossless and efficient directional jumping of the organic crystal can be achieved, and the device and the method can be widely applied to the field of flexible photoelectronics, light-operated micro-actuation or micro-robots.

The application belongs to the technical field of intelligent materials, and provides a hybrid crystal material with a sandwich structure, a preparation method and application thereof. The application realizes a multi-dimensional breakthrough by constructing a hybrid crystal material with a rGO / PDDA / Crystal / PDDA / TPU sandwich structure, and achieves a humidity sensitivity of 1.65%RH ‑1 0.46%°C ‑1 temperature sensitivity in a wide temperature range of 25-180°C, and a dual-mode sensing is realized, and an optical signal calibration is simultaneously provided, and a complex action can be completed through a near-infrared laser remote control at a deep low temperature of-150°C; the organic crystal base (crystal 1 to crystal 6) still has good elasticity and can be repeatedly bent without breaking at a liquid nitrogen temperature of-196°C; meanwhile, the material integrates sensing, optical and driving functions in a single structure, simplifies a traditional process, reduces system cost, is suitable for extreme environments such as deep low temperature, and has great application potential.

The invention belongs to the technical field of organic light-emitting crystal materials, and particularly relates to colorless transparent crystals of organic light-emitting macrocycles and a preparation method and application of the colorless transparent crystals. According to the colorless transparent crystal of the organic light-emitting macrocycle, a dibenzofuran compound serves as a photoelectric element, diarylethene serves as an intelligent element, the dibenzofuran compound and the diarylethene are subjected to conjugate coupling through reasonable design and synthesis, and the O-(2 + 2) novel intelligent molecular macrocycle is obtained. The O-(2 + 2) furyl organic light-emitting macrocyclic colorless transparent crystal is obtained through a slow evaporation method, the crystal is subjected to UV illumination, the crystal is changed from racemization to meso-rotation from racemization, configuration transformation in stereochemistry occurs, and crystal elongation is achieved. The photomechanical property of the organic crystal can be realized by performing UV illumination on the crystal.

Provided is a phosphor having a high emission intensity even if combined with an LED of less than 450 nm, a method for manufacturing the same, and a light-emitting device, image display device, pigment, and an ultraviolet absorber using the same.　The phosphor according to the present invention includes: an inorganic crystal having the same crystal structure as a crystal represented by Ba2Li1Al1Si2O8, the organic crystal including a Li element, an A element, a D element, an E element, and an X element (where A is at least one kind of element selected from the group consisting of Mg, Ca, Sr, and Ba, D is at least one kind of element selected from the group consisting of Si, Ge, Sn, Ti, and Zr, E is at least one kind of element selected from the group consisting of B, Al, Ga, In, and Sc, and X is an element including at least O); or an inorganic compound in which an M element (where M is at least one kind of element selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb) is dissolved in this solid-solution crystal.

The application discloses a preparation method of an organic field effect transistor based on fluorinated polymer dielectric, and belongs to the technical field of microelectronic materials and devices. The preparation method comprises the following steps: firstly, forming source and drain electrodes by evaporation above a substrate; then forming a semiconductor layer and a dielectric layer above the source and drain electrodes by spin coating; and finally, forming a gate electrode above the dielectric layer by evaporation. In the application, DPPT-TT is selected as the semiconductor layer, and CYTOP is selected as the dielectric layer. The optimal annealing temperature of the CYTOP dielectric layer can generate the maximum number of dipoles at the interface between the dielectric layer and the semiconductor layer, so that the organic transistor device with the optimal electrical performance is obtained. The preparation method of the high-performance organic field effect transistor based on fluorinated polymer dielectric provided by the application can optimize the mobility, threshold voltage and on-off ratio of the organic thin film transistor by confirming the optimal annealing temperature of the dielectric layer under the condition of ensuring the optimal working state of the device.