108 results about "Monoclinic crystal system" patented technology

The invention relates to a high-reflectivity high-entropy rare earth phosphate radiation refrigeration pigment, the high-entropy rare earth phosphate radiation refrigeration pigment has a monazite phase with a monoclinic system structure, the chemical formula of the pigment is (A1xA2yA3zA4uA5v) PO4, A1, A2, A3, A4 and A5 are any five rare earth cations of La, Ce, Yb, Gd, Nd and Eu, the cations are in an equimolar ratio, and x, y, z, u and v meet the condition that x + y + z + u + v = 2. Meanwhile, the invention also discloses a preparation method of the high-entropy rare earth phosphate radiation refrigeration pigment. The high-entropy rare earth phosphate radiation refrigeration pigment has high infrared emissivity in air, the emissivity reaches 0.90 or above within the wave band of 8-13 microns, the solar reflectivity reaches 0.93 or above within the wave band of 0.3-2.5 microns, and the high-entropy rare earth phosphate radiation refrigeration pigment has wide application prospects in the fields of building energy conservation, urban heat island effect reduction, photovoltaic power generation efficiency improvement and the like.

The invention discloses a polyacid-based metal viologen framework crystalline material as well as a preparation method and application thereof, and belongs to the technical field of heterogeneous catalytic materials. The crystalline material is synthesized in one step through a hydrothermal method, the molecular formula is Cu2 (H2O) 2 (L) 2 [PW12O40] [OH]. 2H2O, the crystalline material belongs to a monoclinic system, the space group is P21, the cell parameters are alpha = 90 degrees, beta = 114.208 (2) degrees and gamma = 90 degrees, and the structure of the crystalline material is determined through X-ray diffraction. According to the material, accurate compounding of polyacid clusters and metal viologen on the molecular level is achieved, an effective electron transmission channel is constructed, separation of photon-generated carriers is remarkably promoted, and excellent photocatalytic activity is shown. At the ambient temperature, the crystalline material can be used as a catalyst to efficiently degrade dye pollutants (such as methylene blue and rhodamine B) in a water body, the degradation rate within 60 minutes exceeds 90%, and the crystalline material has good cycle stability and structural durability.

The application provides an In-MOF crystal material and a preparation method and application thereof, and the molecular formula of the In-MOF crystal material is [In(phen)(BDC) 1.5 ]·H2O, wherein phen is 1,10-phenanthroline, and BDC is terephthalic acid ligand; the crystal belongs to a monoclinic crystal system P2 1 / n with a space group, and the cell parameters are alpha=90°, beta=97.774(2)°, gamma=90°, a=12.3359(3)Å, b=14.1993(4)Å, c=15.4995(4)Å, the cell volume is 2689.96(12)Å 3 , and Z=4. The application synthesizes an In-MOF crystal material by using a simple room temperature solvent evaporation method, and the In-MOF crystal material can be used as a catalyst for electrocatalytic carbon dioxide reduction, and realizes efficient carbon dioxide reduction to form formic acid.

This invention discloses a samarium-lanthanum co-doped calcium oxyborate yttrium nonlinear optical crystal material, its preparation method, and its applications. The samarium-lanthanum co-doped calcium oxyborate yttrium nonlinear optical crystal material belongs to the monoclinic crystal system, has a space group of Cm, and a chemical formula of Sm. 0.3 La 0.1 :Y 0.6 Ca4O(BO3)3 has a second harmonic response intensity of 0.89 × KDP, and exhibits transmittance exceeding 80% in the 500–1000 nm and 1600–2400 nm wavelength ranges. It also has a strong absorption peak in the 1000–1600 nm wavelength range. Therefore, the samarium-lanthanum co-doped calcium oxyborate yttrium nonlinear optical crystal can be considered as a nonlinear optical crystal material with broad application prospects in the field of optics.

The application discloses a three-dimensional ferroelectric material based on two-dimensional ice stacking and preparation and application thereof, and belongs to the technical field of ferroelectric materials and multifunctional devices. The material is a three-dimensional periodic crystal structure of monoclinic P21 space group, water molecules in the material form a completely saturated network through hydrogen bonds, and there is no suspended hydrogen; interlayers are coupled through van der Waals force to form a multi-level cooperative ferroelectric sequence of "in-plane hydrogen bond ferroelectric + interlayer van der Waals ferroelectric". The material has the characteristics of a wide-bandgap semiconductor (band gap 5-6 eV), extreme anisotropic mechanical properties (Z-axis Young's modulus 48.6 GPa, Eyx=0.973), moderate bulk modulus (12.23 GPa), good acoustic performance (sound velocity 2638 m / s) and extremely high pressure stability (0-3000 GPa structure is complete, 1190 GPa metalization transition). The material can be widely applied in the fields of X-ray optical devices, ferroelectric memories, deep ultraviolet photoelectric detectors, extreme high-pressure sensors, directional stress sensors, mechanical logic devices, surface acoustic wave filters, multifunctional integrated microsystems and multi-parameter composite sensing networks, and opens up a new direction for pure water-based functional materials.

The application belongs to the field of catalyst and its preparation technology, and particularly relates to a three-dimensional network structure barium complex catalyst and a preparation method and application thereof.The three-dimensional network structure barium complex catalyst is a monoclinic crystal.The preparation method of the three-dimensional network structure barium complex catalyst comprises the following steps: mixing 3-(3-carboxyphenyl)-isonicotinic acid, a barium source and an alkali auxiliary agent in a solvent, heating and reacting, filtering, and standing the filtrate to obtain the three-dimensional network structure barium complex catalyst.The preparation method of the three-dimensional network structure barium complex catalyst has the characteristics of low cost, low toxicity, high selectivity, good stability and green environmental protection when the prepared catalyst with a crystal structure is applied to the preparation of N-(1-phenyl-3-phenylprop-2-yn-1-yl)piperidine.

The present invention relates to a rubidium fluoro-scandium borate compound, a rubidium fluoro-scandium borate nonlinear optical crystal, and a preparation method and application thereof. The rubidium fluoro-scandium borate compound has a chemical formula Rb2ScB3O6F2, does not contain a symmetry center and has a molecular weight of 382.33 g / mol. The rubidium fluoro-scandium borate nonlinear optical crystal belongs to the monoclinic crystal system, and belongs to the non-centrosymmetric space group P21, and the unit cell parameters are: a=4.0372(10) Å, b=11.800(3) Å, c=8.823(2) Å, α=γ=90°, β=98.327(11)°, Z=2. The present invention adopts a high-temperature vacuum packaging method or a solid-state synthesis method to prepare rubidium fluoro-scandium borate compounds. The present invention adopts a fluxing agent method to prepare a rubidium fluoro-scandium borate nonlinear optical crystal, which have the advantages of short absorption cutoff edge, large nonlinear optical effect, good thermal stability, and stable physical and chemical properties. The rubidium fluoro-scandium borate nonlinear optical crystal of the present invention can be used to fabricate nonlinear optical devices, which have important applications in fields such as optics, military, laser lithography, and communication, etc.

This invention provides a method for preparing rice-grain-shaped TiO2-B with adjustable aspect ratio, belonging to the technical field of anode materials for alkali metal ion batteries. The TiO2-B belongs to the monoclinic crystal system, space group C2 / m. The TiO2-B particles are ellipsoidal, with the c-axis as the major axis (7-13 nm) and the ab-axis as the minor axis. Its aspect ratio can be controlled within the range of 1.76-3.51, achieving a purity greater than 98%. The raw materials are inexpensive and reusable. The preparation method provided by this invention is simple, yields a highly controllable product with a large specific surface area, high purity, and good electrochemical performance.

A particulate crystalline nanocomposite including: a monoclinic bismuth oxide (Bi2O3) crystalline phase; a calcium silicate (CaSiO3) crystalline phase; and, a graphitic carbon nitride (g-C3N4) crystalline phase, wherein at least a fraction of the g-C3N4 is in the form of mesoporous nanosheets.

This invention discloses an antimony-doped wide-bandgap zirconium chloride powder-emitting crystal material, its preparation method, and its application. The chemical formula of the powder-emitting crystal material is (C9H). 15 N3)2ZrCl8:Sb 3+ It belongs to the monoclinic crystal system, with space group P21 / c; in the described photoluminescent crystal material, each zirconium atom is coordinated with 8 chlorine atoms to form [ZrCl8]. 4‑ Polyhedral structure, organic cation (C9H) 15 N3) + It is linked to inorganic anions via C–N–H···Cl bonds, forming discrete [ZrCl8]. 4‑ The octahedral structure is replaced by organic cations (C9H). 15 N3) + Complete isolation is achieved, forming a zero-dimensional ionic crystal structure. This invention overcomes the problems of single luminescent center, limited emission wavelength, and insufficient luminescence intensity in undoped zirconium-based chlorides by introducing antimony. Antimony, as an effective luminescent center, can promote the radiative recombination process and achieve high-brightness broadband emission.

The invention discloses an energetic material, a preparation method thereof and application of the energetic material as an initiating explosive, an explosive and a pyrotechnic compound. The chemical formula of the energetic material is MC10H18B2N6; wherein M is selected from at least one of Mn, Fe, Co, Ni, Cu, Zn and Cd; the crystal structure of the energetic material belongs to a monoclinic system, and the space group is P21 / n. The obtained energetic material has excellent stability and safety, and is green and environment-friendly. Through experimental determination, the thermal stability is greater than or equal to 120 DEG C, the impact sensitivity is greater than or equal to 40J, and the friction sensitivity is greater than or equal to 240N. Compared with an existing commercial propellant (unsymmetrical dimethylhydrazine), the ignition delay time of the energetic material is equivalent, the defects that fuel and an oxidizing agent are seriously mixed and the combustion efficiency is low are overcome, and the energetic material has important commercial application value in the field of green high-performance energetic materials.

This invention discloses a nicotinamide-salicylic acid cocrystal, its preparation method, and its uses, relating to the field of cocrystal technology. The nicotinamide-salicylic acid cocrystal comprises nicotinamide and salicylic acid molecules, and the molecular formula of the nicotinamide-salicylic acid is C0. 13 H 12 N2O4, wherein the molar ratio of nicotinamide to salicylic acid is 1:1; the eutectic is monoclinic, space group P21 / n, with cell parameters a=11.080(2)Å, b=5.0000(10)Å, c=22.820(5)Å, α=90°, β=97.60(3)°, γ=90°, V=1253.1(4)Å. 3 The differential scanning calorimetry (DSC) spectrum of the eutectic showed a characteristic endothermic peak around 142.4 ± 2 °C. This invention addresses the problems of poor stability of nicotinamide, low solubility of salicylic acid, and strong irritation in existing technologies by optimizing intermolecular interactions to form a specific crystal form, thus providing a novel raw material with superior performance for the cosmetics industry. This is achieved through the preparation of a structurally stable, simple, and chemically superior nicotinamide-salicylic acid eutectic with excellent physicochemical properties.

The invention discloses a novel organic metal bromide ferroelastic material as well as a preparation method and application thereof, and belongs to the technical field of molecule-based ferroelastic materials. The prepared molecule-based ferroelastic material is (N, N-dimethylmorpholinium) 2CuBr4, is crystallized at room temperature in a central symmetry space group P21 / c of a monoclinic system, is a molecule ferroelastic body with spontaneous strain, and has good ferroelastic performance. The material is subjected to cis-elastic-ferroelastic phase change with an Azzu symbol of mmmF2 / m at 344 K, and the ferroelastic domain structure has good cycle stability; when an external stress acts on the molecular ferroelastic material, a response can be quickly made to realize rearrangement of the ferroelastic domain structure. Therefore, the molecule-based ferroelastic material has huge application value in the fields of temperature-controlled or voltage-controlled tuning gratings, optical information memories, intelligent sensors, drivers and the like.

The invention provides an application of a two-dimensional rare earth double perovskite material in preparation of a memristor, and relates to the technical field of memristors, the chemical general formula of the two-dimensional rare earth double perovskite material is (R3HQ) 4CeRb (NO3) 8, wherein the (R3HQ) 4CeRb (NO3) 8 is a monoclinic system, and the polar point group of the (R3HQ) 4CeRb (NO3) 8 is P21; and R3HQ is an (R)-3 hydroxyl quinuclidine ring organic cation. Two-dimensional rare earth double perovskite (R3HQ) 4RbCe (NO3) 8 is used as an active layer, and a memristor device is directly constructed. The memristor shows bipolar switching characteristics without electroforming, has long-term stability and good flexibility, and can bear hundreds of bending cycles.

The invention belongs to the field of nonlinear optical crystal materials, and particularly relates to a nonlinear optical crystal and a preparation method and application thereof. The chemical formula of the nonlinear optical crystal is Zn4EuO (BO3) 3, the nonlinear optical crystal belongs to a monoclinic system, the space group is Cm, and the cell parameters are that alpha is equal to 90 degrees, beta is equal to 100.193 degrees, and gamma is equal to 90 degrees. The crystal disclosed by the invention has good SHG performance and fluorescence performance at the same time; a frequency doubling signal of the crystal is about 4 times that of a KDP sample; the fluorescent material emits red light, the service life of the Eu (5D0) state of the fluorescent material is about 1.43 milliseconds under the conditions that lambda ex and um are equal to 464 and 610 nm, and the fluorescent material is a potential luminescent material emitting red light. In addition, the optical band gap of the crystal is 3.46 eV, and the crystal has extremely high thermal stability which can reach 1100 DEG C.

The invention discloses an organic and inorganic compound crystal (H11C4N2) CdI3 as well as a preparation method and application thereof. The organic and inorganic compound crystal is a hybrid crystal, the chemical formula is (H11C4N2) CdI3, the organic and inorganic compound crystal belongs to a monoclinic system, the space group is Cc, and the cell parameters are as follows: a = 14.36-14.38, b = 7.13-7.15, c = 13.77-13.79, alpha = gamma = 90 degrees, beta = 121.2-121.4 degrees, and Z = 4. The crystal is prepared by a hydrothermal method. The organic-inorganic hybrid crystal has excellent second-order nonlinear optical performance, can output very strong 532 nm laser under 1064 nm laser irradiation, has a powder SHG coefficient 6 times that of KH2PO4 (KDP), can realize phase matching, and is a second-order nonlinear optical material with potential application value.

The application discloses a kind of piperidine-based zinc-based organic-inorganic hybrid crystal and its preparation method and application, crystal is (4-chloro-1-methylpiperidinium-1-ol) 2ZnBr4, crystallize in chiral space group P21 in monoclinic system, present typical zero-dimensional packing structure, crystal is obtained by the way of room temperature volatilization crystallization, exhibit certain intensity mid-infrared second-order nonlinear optical effect, its frequency doubling coefficient is 0.29 times of commercial potassium dihydrogen phosphate (KDP) crystal, with simple preparation method and good phase purity, in laser frequency converter, electro-optic modulator, electro-optic deflector and related fields have potential application value.

The application belongs to the cross field of nanomaterials and coordination chemistry, and specifically discloses a near-infrared responsive photothermal silver-palladium nanocluster material, a preparation method and application in near-infrared photothermal conversion. 362 H 270 Ag 20 Cl4F 12 P8Pd5Sb2, which is abbreviated as Ag 20 Pd5(4‑EBP) 18 (DPPP)4(SbF6)2·2CH2Cl2, belongs to a monoclinic system, and a space group is P21 / n, a =16.228(13)Å, b =40.670(3)Å, c =25.941(2)Å, α=90°, β =100.283(2)°, gamma =90°, V=16846(2)Å 3 , and a molecular weight is 8170.22 Da. The preparation method has short process flow, simple operation, and raw materials are easy to obtain. The photothermal silver-palladium nanocluster has a high photothermal efficiency of 73.25% under 915 nm (0.6 W / cm 2 ) laser excitation, and has good application prospect.

The application belongs to the technical field of functional crystal materials, and more particularly relates to a high-stability two-dimensional Dion-Jacobson type non-lead polar hybrid perovskite crystal and a preparation method and application thereof. The high-stability two-dimensional Dion-Jacobson type non-lead polar hybrid perovskite crystal has a chemical formula of (4AMPY)2AgBiBr8, belongs to a monoclinic system, and has a space group of P21. The crystal is prepared into an X-ray detector, which can realize efficient and stable X-ray detection under zero bias voltage and high bias voltage. The single crystal is irradiated by different X-ray irradiation doses, and the X-ray response performance thereof is tested. When the crystal is irradiated by different X-ray irradiation doses, the crystal exhibits obvious light response, and the result shows that the material has potential application value as an X-ray detection material.

The invention discloses a fluorescent sensing material for detecting Cu < 2 + >, Ag < + > and Au < 3 + > ions as well as a preparation method and application of the fluorescent sensing material. Specifically, the crystal belongs to a monoclinic system, the space group is P21 / n, the molecular formula is C122H96N4O16Zn4, the molecular weight is 2135.50, the cell parameters a are equal to 13.8299 (7), the cell parameters b are equal to 22.8747 (12), the cell parameters c are equal to 31.8830 (16), the cell parameters alpha are equal to 90 degrees, the cell parameters beta are equal to 95.746 (2) degrees, and the cell parameters gamma are equal to 90 degrees. The prepared fluorescence sensing material has a clear space structure and an accurate molecular formula, can efficiently and rapidly detect Ag < + >, Cu < 2 + > and Au < 3 + > ions, and has a wide application prospect as a fluorescence sensor. The technology has the advantages of simplicity in operation, low cost, stable performance and the like.

The invention relates to a second-order nonlinear optical material crystal amino methanesulfonic acid as well as preparation and application thereof. The chemical formula of the crystal is O3SCH2NH3, the molecular weight of the crystal is 111.12, the crystal belongs to a monoclinic system, the space group of the crystal is Cm, the cell parameters are alpha = gamma = 90 degrees, beta = 129.7-131.7 degrees, Z = 2, and the cell volume of the crystal is structurally characterized in that the crystalline material is a three-dimensional frame formed by connecting [O3SCH2NH3] elements through hydrogen-bond interaction. The amino methanesulfonic acid crystal material has excellent optical performance, and under 1064nm laser irradiation, the powder frequency doubling intensity is about 3.8 times that of a KH2PO4 (KDP) crystal; under the irradiation of 532 nm laser, the frequency doubling strength of the powder is about 0.7 time of that of the beta-BaB2O4 (BBO) crystal, and phase matching can be realized. Besides, the crystal material has moderate birefringence at 546 nm, the ultraviolet absorption cut-off edge is smaller than 170 nm, and the crystal material has stable physical and chemical properties and has important application value in the photoelectric fields of photoetching, laser frequency conversion, environmental monitoring and the like.

The invention relates to a fluoroborate melamine tetrafluoroborate nonlinear optical crystal and a preparation method and application thereof. The molecular formula of the crystal is C3H8N6 (BF4) 2. H2O, the molecular weight is 319.79, the crystal is prepared by adopting a cooling crystallization method, and the crystal has a monoclinic system, a space group Cc (No.9) and cell parameters of a = 6.1064 (2), b = 13.7741 (4), c = 13.8484 (3), alpha = 90, beta = 95.1550 (10), gamma = 90, Z = 4 and V = 1160.08 (6) 3. The fluoroborate melamine tetrafluoroborate nonlinear optical crystal obtained by the method has the advantages of wide light-transmitting wave band, large second-order nonlinear response, sufficient birefringence, low mechanical strength, easiness in cutting, polishing and processing and the like.

The invention provides a seven-layer interpenetrating Zn-MOF material, which has a chemical general formula of [Zn (SDC) (pyan) (H2O)] n, belongs to a monoclinic system, has a space group of C < 2 > / c, and has cell parameters of a = 14.2585, b = 24.0295 (18), c = 9.5895 (6) and V = 3284.5 (4) 3. The component SDC2 <-> is obtained by removing two protons from rigid dicarboxylic acid stilbene diacid, the structure of H2SDC is as shown in a formula I, and the structure of pyan is as shown in a formula II. The prepared seven-layer interpenetrating Zn-MOF material does not contain rare earth elements, and the calculated value of the Zn element content is 9.59%. A metal-organic framework with a diamond-like network structure is adopted, a stable complex network is formed through seven-fold interpenetration, and organic components SDC2-and pyan have a large conjugate pi electronic system. The preparation conditions are mild, the yield is about 67%, and the good thermal stability is achieved; the hybrid light-emitting device HLED made of the new material can emit high-brightness blue-green light during working.

The invention belongs to the technical field of energetic materials, and discloses a novel diamine ternary self-assembly energetic material and a preparation method thereof. The chemical structural unit of the energetic material is composed of a double-protonated ethylenediamine cation, a double-protonated propane diamine cation and four perchlorate anions, the crystal of the energetic material belongs to a monoclinic system, and the space group of the energetic material is P21 / c. The material shows excellent comprehensive performance, including positive oxygen balance, positive enthalpy of formation, high theoretical specific impulse and good thermal stability and moisture absorption resistance. The preparation method comprises the following steps: dissolving ethylenediamine and propane diamine in water to form a mixed solution, then adding a perchloric acid aqueous solution, magnetically stirring to separate out a white solid, and filtering to obtain a target product. The method takes water as a solvent, is simple in process, environment-friendly, low in cost and suitable for large-scale production, and provides a novel component which is high in performance and green in preparation for the field of energetic materials.

This invention discloses potassium borosilicate, potassium borosilicate nonlinear optical crystals, their preparation methods, and applications, belonging to the field of nonlinear optical crystal technology. The chemical formula of potassium borosilicate is K4B6Si3O. 17 With a molecular weight of 577.53, it was prepared using solid-state synthesis or vacuum encapsulation; the chemical formula of this crystal is K4B6Si3O. 17 It has a molecular weight of 577.53, belongs to the monoclinic crystal system, and has a space group of C 2. The unit cell parameters are a =11.8628(13)Å, b =6.6285(6)Å, c =11.0097(19)Å, β =117.183(4)°, unit cell volume is 770.10(17) Å. 3 The powder frequency doubling effect of the crystal is about 1.4 times that of KH2PO4 (KDP), and the ultraviolet absorption edge is shorter than 190 nm. The crystal has good chemical stability and can be used as an ultraviolet and deep ultraviolet nonlinear optical crystal in all-solid-state lasers.

The invention discloses an indium-based hybrid metal halide crystal and a preparation method and application thereof, and is characterized in that the chemical formula of the indium-based hybrid metal halide crystal is [(CH3) 4N] 2 [InCl5 (DMF)]; wherein the DMF is N, N '-dimethylformamide; the indium-based hybrid metal halide crystal has a zero-dimensional structure; a metal ion In < 3 + > of halide anions in the zero-dimensional structure is coordinated with five Cl <-> and one N from an organic solvent DMF to form an octahedral configuration; the indium-based hybrid metal halide crystal belongs to a monoclinic system, and the space group is C2 / c. The fluorescent material has the properties of a fluorescent material and an afterglow material, and has the properties of converting ultraviolet light into visible light, emitting green afterglow in 3 seconds and preventing counterfeiting.

This invention discloses a eutectic explosive for laser-initiated detonation and its preparation method. The basic structure of the eutectic explosive includes one CL-20 molecule, two DATNBI molecules, and two acetonitrile molecules. The unit cell parameters of the eutectic explosive are α = 94.764°, β = 95.065°, γ = 107.066°, Z = 2, belonging to the monoclinic crystal system, space group P-1. The CL-20 / DATNBI eutectic of this invention exhibits low insensitivity and good thermal stability. It can be used as a new generation of metal-free laser-initiated explosives through a molecular-level hierarchical detonation structure, showing promising application prospects in the field of laser-initiated detonation.

The invention belongs to the technical field of new materials, and particularly relates to a pyrazolyl framework material as well as a preparation method and application thereof. The ligand is 4, 4 '-(2, 2'-bis (trifluoromethyl)-[1, 1 '-biphenyl]-4, 4'-diyl)-bis (1H-pyrazole), the crystal structure of the ligand belongs to a P21 / c space group of a monoclinic system, and the cell parameters of the ligand are as follows: the axial length a is 9.0797 (2), the b is 19.7923 (4), the c is 90.0 (10), the axial angle alpha is equal to gamma and is 90 degrees, the beta is equal to 92.196 (2) degrees, the cell volume is 5695.9 (2) 3, and the Z is 12. Two zinc-based complexes are synthesized based on the ligand and the same series of ligands 4, 4 '-(2, 2'-dimethyl-[1, 1 '-biphenyl]-4, 4'-diyl)-di (1H-pyrazole), the structure of the zinc-based complexes 1 belongs to a tetragonal system and an I41 / a space group, and the cell parameters of the zinc-based complexes 1 are that the axial length a = b = 34.8953 (6), the c = 13.4293 (6), the axial angle alpha = beta = gamma = 90 degrees, the cell volume is 16352.6 (7) 3, and Z = 228. The series of zinc-based complexes can be applied to the field of butane isomer gas separation.

This invention discloses a 2-p-methylphenyl-3-trifluoroethylindole compound with the structure shown in formula (A), its crystal form, preparation method, and applications. This invention provides crystal form I of the compound of formula (A), which is monoclinic with space group P21 / c and cell parameters α = 90°, β = 91.884(10)°, and γ = 90°. This invention also provides a method for preparing crystal form A, successfully preparing a 2-p-methylphenyl-3-trifluoroethylindole compound and its crystal form. Furthermore, the compound or its crystal form exhibits certain antibacterial activity and good stability, greatly facilitating subsequent product transportation, storage, or formulation processes.

The invention discloses a powder light emitting crystal material of antimony-doped wide bandgap zirconium-based chloride and a preparation method and application of the powder light emitting crystal material, the chemical formula of the powder light emitting crystal material is (C9H15N3) 2ZrCl8: Sb < 3 + >, the powder light emitting crystal material belongs to a monoclinic system, and the space group is P21 / c; in the powder light emitting crystal material, each zirconium atom is coordinated with eight chlorine atoms to form a [ZrCl8] < 4-> polyhedral structure, organic cations (C9H15N3) < + > are connected with inorganic anions through C-N-H... Cl bonds, and the discrete [ZrCl8] < 4-> octahedral structure is completely isolated by the organic cations (C9H15N3) < + > to form a zero-dimensional ion crystal structure. According to the invention, the antimony element is introduced to overcome the problems of single luminescence center, limited emission wavelength and insufficient luminescence intensity of undoped zirconium-based chloride, and antimony is used as an effective luminescence center to promote the radiation recombination process and realize high-brightness wide-spectrum emission.