272 results about "Electronegativity" patented technology

The invention belongs to the technical field of OLEDs, and provides a polycyclic compound containing triphenyl silicon and a polyalkyl substituent group and an organic electroluminescent device containing the polycyclic compound. The structural general formula of the polycyclic compound is as shown in formula I in the specification. Benzofuran with higher electronegativity is introduced to a ring structure composed of nitrogen atoms and boron atoms, triphenyl silicon is introduced to the para-position of boron, and the synergistic effect of benzofuran and triphenyl silicon can significantly enhance the multiple resonance of a light-emitting core and reduce vibration relaxation. Due to simultaneous use of the benzofuran and the triphenyl silicon, the problems of vibration relaxation increase, spectrum widening and the like caused by introduction of the polyalkyl substituent are remarkably improved, the luminous efficiency of the material is remarkably improved, and the color purity is improved, so that the requirement of BT.2020 wide color gamut display standard on a luminescent spectrum is met. I

A modified nickel-based positive electrode material comprises a nickel-based positive electrode material matrix and a doping element doped in the nickel-based positive electrode material matrix, the electronegativity of the doping element is higher than that of lithium and transition metal elements in the nickel-based positive electrode material matrix, and the porosity of the material is 10%-20%. The preparation method comprises the following steps: mixing and sintering a positive electrode material precursor, a lithium source and a doping agent to obtain a sintered product; washing and drying the sintered product to obtain a washed product; and mixing the washed product with a coating agent, and sintering to obtain the modified nickel-based positive electrode material. The invention also discloses a lithium ion battery. In the modified nickel-based positive electrode material, a part of doped elements enter a lattice body of a nickel-based positive electrode material matrix, the electronegativity of the doped elements is larger than that of lithium and transition metal elements, the doped elements have higher covalence, higher bond strength and higher oxidation potential, lattice oxygen in the structure is stabilized, precipitation of the lattice oxygen is reduced, and therefore the structural stability of the material is improved.

The invention discloses a zinc-bromine flow battery multifunctional negative electrode electrolyte and a preparation method thereof, and belongs to the technical field of electrochemical energy storage, and the method comprises the following steps: uniformly stirring and mixing a solvent, deionized water and a cosolvent, adding an electrolyte, stirring until the electrolyte is completely dissolved, then adding a supporting electrolyte and a negative electrode additive, stirring until the supporting electrolyte and the negative electrode additive are completely dissolved, and obtaining the zinc-bromine flow battery multifunctional negative electrode electrolyte. The multifunctional negative electrode electrolyte of the zinc-bromine flow battery is obtained; the negative electrode cosolvent is dimethylformamide; and the negative electrode additive is at least one of saponin and cinnamyl aldehyde. Saponin molecules are adsorbed on the surface of the zinc electrode, and electronegative carboxyl groups of the saponin molecules form an electrostatic repulsion net in an electric double layer, so that zinc ions are forced to be uniformly dispersed, local ion concentration hot spots are eliminated, and dendritic crystal nucleation is inhibited from the source. In cinnamyl aldehyde, the strong electronegativity of oxygen atoms and the electronegativity of aldehyde oxygen are far higher than those of hydrogen, so that electrons are strongly attracted, adjacent carbon atoms are positively charged, polar adsorption sites are formed, the hydrogen evolution reaction is effectively inhibited, and the stability and the cycle life of the battery are greatly improved.

The invention relates to the technical field of quantum computing and molecular electronic devices, in particular to a probabilistic bit device based on polyfluoroaryl methyl free radicals and a preparation method of the probabilistic bit device. According to the probabilistic bit device, the coupling efficiency of molecules and electrodes is improved by virtue of the characteristic that the paramagnetic unpaired electron spin state of tri (polyfluoroaryl) methyl free radical molecules can be used as a random expansion physical entropy source and high electronegativity and stability formed by modification of a plurality of strong electron-withdrawing fluorine atoms in the molecules. During the operation period of the device, the spin fluctuation can efficiently regulate and control tunneling current passing through molecules, promote random conversion between output high and low current states, show excellent random binary fluctuation characteristics, and simultaneously have high sensitivity and long coherence time. Compared with the prior art, the device has remarkable advantages in the aspects of device stability, energy efficiency ratio and external field controllability. The preparation method is simple and convenient to operate, mild in reaction condition and beneficial to large-scale production.

The invention discloses a protruding conductive microsphere and a pretreatment method thereof. The pretreatment method specifically comprises the steps of roughening treatment, protruding and interface activity treatment, sensitization treatment, activating treatment and chemical plating. In the protruding and interfacial activity treatment, by adding an interfacial agent, the electronegativity of the surfaces of the microspheres is enhanced, electrostatic adsorption with positively charged nickel nanoparticles is generated, and meanwhile, agglomeration of the nickel nanoparticles on the surfaces of the polymer microspheres is effectively prevented through the steric hindrance effect; therefore, a nickel nanoparticle bulge structure which is high in density, uniform in distribution and firm in combination is formed on the surface of the polymer microsphere. The method effectively solves the problems that a traditional conductive microsphere coating is prone to cracking and falling off, poor in dispersity and the like, the prepared protruding conductive microspheres have the outstanding advantages of being high in coating binding force, excellent in conductivity, good in dispersity, not prone to agglomeration and the like, the technological process is simple, mass production is easily expanded, and the method is suitable for large-scale production. The anisotropic conductive adhesive film has a wide commercial application prospect in the field of electronic packaging such as anisotropic conductive adhesive films.

The invention discloses an ultralow-thermal-conductivity high-entropy rare earth disilicate ceramic material and a preparation method thereof, and belongs to the technical field of high-performance ceramics. Through a high-entropy engineering strategy, aiming at the problems of poor phase stability, high thermal conductivity and insufficient calcium-magnesium-aluminum silicate corrosion resistance of a traditional rare earth bisilicate material, a Ho-Yb-Lu-X multi-element rare earth composite system high-entropy effect regulation and control component strategy is innovatively adopted, and based on atomic radius difference, electronegativity matching and a mixed entropy effect, the high-entropy composite material is prepared. The high-entropy ceramic with the beta-type RE2Si2O7 phase structure is successfully prepared, generation of impure phases is effectively inhibited, and a compact material is obtained. The obtained material shows the ultralow thermal conductivity of 0.841 W / m.K at the temperature of 1400 DEG C, wherein the thermal conductivity is reduced by about 46% compared with that of traditional Yb2Si2O7. According to the preparation process, the sintering temperature is reduced by 50 DEG C through high-entropy component design, no complex post-treatment procedure is needed, the preparation process has the advantages of simplified process, high yield and the like, and an ideal candidate material is provided for a new generation of aero-engine thermal barrier coating.

The invention provides a design and application of a power type electrolyte of a double-electric-layer capacitor, and the electrolyte comprises an organic solvent, an electrolyte salt and an additive. Wherein the additive has a general formula structure as shown in Figure 1: the additive has a strong electronegativity part and a strong electropositivity part, a proper chain length is adjusted between the two parts, so that the whole molecular size of the additive can be matched with the micropore diameter of the activated carbon, adsorption and desorption are facilitated, bond breaking is easy, and when part of pseudocapacitance is contributed through oxidation bond breaking, the performance of the additive is improved. According to the present invention, the positive electrode and the negative electrode can be preferentially adsorbed to the positive electrode and the negative electrode so as to form the regulation and the low polarity and high density interface, such that the ion association of the salt ions at the double electrode layer is reduced, the reduction of the liquid phase transmission internal resistance is achieved, the excellent power performance is further represented, and the capacity retention rate in the 125A large-rate cycle (the conventional current is 25A) is increased to 90.1% from 76.3%. In addition, the silicon-containing part formed by broken bonds can also synergistically remove HF generated by hydrolysis of salt anions BF4 <-> in the electrolyte, passivate Al foil and reduce the contact internal resistance of the aluminum conducting bar. The configuration of the additive introduced into the electrolyte is shown in the specification.

The invention relates to the technical field of hydrogen storage alloys, in particular to a Ti-based hydrogen storage alloy and a preparation method and application thereof. The chemical formula of the Ti-based hydrogen storage alloy is TibZr (1.02b) CrcMn (1.6 c) Fe 0.4, b is larger than or equal to 0.92 and smaller than or equal to 0.95, and c is larger than or equal to 1.0 and smaller than or equal to 1.2. According to the invention, Ti or Cr is doped into a Ti0. 92Zr0. 1Cr1. 0Mn0. 6Fe0. 4 alloy matrix, and regulation and control of unit cell parameters and electronegativity are realized by means of alloying, so that the hydrogen compression material has a higher compression ratio, and the alloy crystal structure is stable, and has more excellent activation performance, longer cycle life and higher cycle stability.

The invention discloses saturation magnetic induction prediction and component design of an iron-based amorphous alloy and an ultrahigh saturation magnetic induction iron-based amorphous / nanocrystalline alloy. The core effects of ferromagnetic element content, alloy mixing enthalpy and poor electronegativity are disclosed by combining a machine learning model XGBoost with SHAP analysis, the amorphous forming ability is not deteriorated while the high ferromagnetic element content is kept, extremely low coercive force can be obtained after annealing, and collaborative optimization of high saturation magnetic induction, the amorphous forming ability and the coercive force is realized. Parameters used by the component design criterion provided by the invention do not need experimental data, and can be directly calculated from alloy components. High-performance components are rapidly screened in combination with a machine learning model, the research and development period and cost of a traditional trial and error method are remarkably reduced, systematic theoretical guidance is provided for development of high-performance soft magnetic materials, and industrial feasibility is improved.

The invention provides application of a silver modified AFX molecular sieve in xenon and krypton gas separation, and belongs to the technical field of gas separation. According to the invention, silver ions with electronegativity are introduced into AFX molecular sieve pores through ion exchange, selective adsorption of xenon is realized through the AFX topological molecular sieve subjected to Ag exchange so as to enrich xenon, and excellent separation of xenon and krypton is finally realized. The xenon and krypton adsorption isotherm of the silver modified AFX molecular sieve under the condition of 25 DEG C is tested, and the IAST (ideal adsorption solution theoretical value) of the molecular sieve is analyzed to be 36.5 through a static adsorption curve; according to the method disclosed by the invention, a dynamic penetration test is carried out under trace Xe and Kr concentrations by simulating the waste gas subjected to UNF post-treatment, and the dynamic capacity of Xe is calculated to be 104 mmol kg <-1 >, which is superior to that of other reported materials.

The invention relates to a prepreg and a composite board, the prepreg comprises plant fiber cloth and a resin composition attached to the plant fiber cloth, the resin composition comprises thermoplastic resin, thermosetting resin and a curing agent, and the electronegativity difference value of atoms in polar groups at the tail end of a main chain of the thermoplastic resin is 0.4-1.7. The composite board prepared from the prepreg can be recycled, and has excellent mechanical properties and damp-heat aging resistance at the same time.

The present invention provides an electrolyte additive and a preparation method thereof, an electrolyte and a lithium ion battery. The S atoms in the structure of the electrolyte additive of the present invention have low electronegativity and low binding energy with lithium ions, which can reduce the desolvation energy of lithium ions and significantly improve the rate performance and cycle life of the battery at low temperatures. Moreover, the O atoms in its structure can significantly improve the solubility of the additive to compensate for the defect of poor solubility caused by the S atoms. In addition, the additive contains unsaturated bonds, which can form a dense SEI film containing S, which is beneficial to the migration of lithium ions at the electrode / electrolyte interface at low temperatures, and the SEI film containing S can effectively inhibit the generation of lithium dendrites at low temperatures, further improving the rate performance and cycle life of the battery at low temperatures.

According to the invention, a stable Zn negative electrode is realized by forming an in-situ constructed zinc-loving and hydrophobic interface through simple soaking, and a unique carbonyl functional interface layer is formed in situ by soaking zinc foil in a glyoxal solution. On the basis of strong electronegativity of carbonyl, obvious interaction can be generated on zinc ions. And moreover, the hydrophobicity of the Zn negative electrode is improved by the unique particle morphology formed in situ. Through reconstruction of a negative electrode interface by glyoxal, a contact angle result shows that the unique morphology of glyoxal formed on the surface of the Zn negative electrode can increase the hydrophobicity of the Zn negative electrode. Therefore, a compact granular unique morphology is formed in situ on the surface of the Zn negative electrode through simple soaking, so that the Zn negative electrode becomes hydrophobic, and side reactions such as hydrogen evolution and by-products at an electrolyte / electrode interface are slowed down. As a result, symmetric cells exhibit more than 3200 hours at 1 mA cm <-2 > and 1 mAh cm <-2 >. Various types of positive electrodes can be matched, and excellent cycling stability is realized; for example, when matched with a MnVO positive electrode, it can be stably cycled for 2000 times.

The present invention discloses a blue luminescent compound, a blue luminescent composition, and an organic electroluminescent device, display device and lighting device comprising the blue luminescent compound or blue luminescent composition. The blue luminescent compound is selected from one of the following structures. The blue luminescent compound provided by the present invention is used as a host material in a blue luminescent layer. A triplet-triplet fusion process (TTF effect) of the material is improved by using an α-naphthalene substituent. The theoretical exciton utilization rate of the material is increased to 62.5%. The electron transmission rate of the material is improved by introducing an oxygen atom with a large electronegativity, thereby improving the carrier balance. Furthermore, by deuteration of at least part of naphthyl and an anthracene nucleus and combination with semi-deuterated dibenzofuran, the thermal stability of the material is significantly enhanced and at the same time an exciton energy rise caused by vibration in the material is reduced, thereby weakening the problems of damage and deterioration of a material in an adjacent layer by excitons, so that the lifetime of the organic electroluminescent device can be significantly improved, and defects in the prior art are overcome.

The application provides a Sn-doped Fe-N-C catalyst, a preparation method and application thereof. The catalyst comprises a carrier and Sn atoms and Fe atoms supported on the carrier, and the carrier is an N-doped carbon material. The application dopes the p-block metal Sn with stronger electronegativity into the Fe-N-C catalyst, forms an electron-withdrawing environment around the FeN4 site, reduces the electronegativity of the FeN4 site, and weakens the adsorption strength of the FeN4 site on the oxygen reduction intermediate. Meanwhile, the metal Sn is weaker in reactivity with hydrogen peroxide produced by the reaction of oxygen via a two-electron process than Fe, reduces the concentration of free radicals produced by the reaction, improves the stability of the carrier and active sites, and can effectively prevent the shedding of Fe. The application uses the catalyst as a cathode catalyst of a proton exchange membrane fuel cell, is low in cost, and can simultaneously meet the requirements of high catalytic activity and good stability.

The present invention provides a device and method for improving the insulation performance of high-power microwaves in space using an N2 / SF6 mixed gas mixture. The device comprises an N2 gas cylinder, an SF6 gas cylinder, and two vacuum chambers. The gas cylinders and vacuum chambers are connected to the equipment to be protected via a gas path equipped with valves and pressure detection devices. A multi-stage pressure reduction device is also provided on the gas path between the gas cylinders and the equipment to be protected. This device utilizes the strong electronegativity of inert gases, making it reliable, safe, and easy to implement. Through specific valves and pressure reduction designs, it can provide multiple solutions for targeted and comprehensive improvements to the insulation performance of space microwave transmission devices, tailored to different space application scenarios, thereby enhancing the reliability and safety of space equipment.

To improve cell performance.SOLUTION: An electrochemical cell comprises a first electrode layer, a second electrode layer, and a solid electrolyte layer. The solid electrolyte layer is located between the first electrode layer and the second electrode layer and has oxide ion conductivity. The first electrode layer includes an electron conductive material, and a first material including, as a main component, a first element having a smaller electronegativity than that of zirconium.SELECTED DRAWING: Figure 3

The application provides a fluorine-doped Fe-N-C composite material and a preparation method and application and regeneration thereof, and belongs to the technical field of water pollution. In the application, an iron precursor, a zinc salt, an organic ligand and an organic solvent are mixed to synthesize Fe-doped metal organic framework Fe@ZIF-8 material, and then the Fe@ZIF-8 material is carbonized into Fe-N-C material; then the Fe-N-C material is mixed with a fluorine source and subjected to secondary carbonization to obtain the fluorine-doped Fe-N-C composite material. In the application, fluorine atoms are introduced into the Fe-N-C material to produce axial coordination with Fe of the FeN4 center, the fluorine element with high electronegativity can effectively improve the isoelectric point of the Fe-N-C material, the reaction activity of the material is enhanced, the Fe leaching of the material in the reaction process is inhibited, and the stability of the material is improved. In addition, the prepared fluorine-doped Fe-N-C composite material can be reused through fluorine-doping regeneration, and high reduction activity and stability can be maintained.

The present invention discloses a highly thixotropic, low thermal resistance and ultra-long life thermal conductive silicone grease and its preparation method. By the compatibility of silicone oils with different degrees of branching and different end groups, a compound silicone oil with higher wettability and lubricity is obtained, reducing the friction between powders and increasing the powder filling rate; by adding nano-ABS microsphere powders, on the one hand, the thixotropy of the material is improved, and on the other hand, the high-temperature stability and shape retention ability of the thermal conductive silicone grease are improved by utilizing the characteristics of high-temperature softening and swelling of ABS at high temperatures; by adding Ce element to the Al matrix, due to the low electronegativity of Ce, more metals are provided for Al, increasing the electron density of the conduction band; at the same time, the addition of Ce can modulate the electronic structure of Al, further expanding the s-band and p-band of Al, improving the mobility of conduction band electrons, so that AlCe has a higher thermal conductivity than pure Al.

The invention discloses a synthesis method and application of a non-condensed ring electron acceptor, which are different from a traditional condensed ring structure or a single alkyl chain side chain, and a dichlorobenzene unit is introduced as a conformation regulating group. As chlorine atoms have strong electronegativity and proper atomic radius, remarkable non-covalent interaction such as Cl-S and Cl-pi can be generated among molecules. The interaction is similar to a set of precise molecular guide rails, molecules are guided to perform highly ordered pi-pi accumulation, so that electron cloud overlapping is remarkably enhanced, and an efficient electron transmission channel is constructed. According to the organic solar cell prepared based on the non-condensed ring electron acceptor material designed by the invention, the electron mobility is remarkably improved, and meanwhile, the charge recombination loss of a device is effectively reduced.

The application is a divisional application of Chinese patent application No. 202011250638.2 entitled "Structure of steric hindrance adjustable weak base light stabilizer and preparation method and application thereof". The present application belongs to the field of new compounds and their synthesis methods, and specifically relates to a steric hindrance adjustable weak base light stabilizer and a preparation method and application thereof. The innovative light stabilizer of the present application adjusts the steric hindrance by establishing the size of the substituent group that produces steric hindrance around the nitrogen atom in the general structure. In addition, by adjusting the distance of the polar group, the electronegativity of the nitrogen atom can be affected, thereby adjusting its basicity or nucleophilic property. By adjusting the steric hindrance and nucleophilic property or basicity of the nitrogen atom in the environment, the desired effect is obtained, and the application range of the innovative light stabilizer is widened, so that it is widely applicable to PC, polyester, PU, PVC and other acidic or electrophilic polymer materials as a light stability protection aid.

The invention discloses a preparation method and application of an anti-spontaneous-combustion three-phase foam material, the anti-spontaneous-combustion three-phase foam material comprises a compound with a special structure as shown in a formula I. The compound has hydrophilic groups, has certain chain length and contains more electronegative groups; a stable film layer can be stably formed on the surface of a three-phase foam system due to the electric repulsion capability; the coal mining and phosphorus-containing soil contains a large amount of silicon dioxide, and the surface of the silicon dioxide contains a large amount of silicon hydroxyl (-Si-OH), so that the electronegative film layer can generate relatively strong binding force with the silicon hydroxyl, thereby reducing the loss or failure of three-phase foam caused by external acting force, greatly improving the stability and flame-retardant effect of the three-phase foam, and prolonging the service life of the three-phase foam. The method has a remarkable application prospect.

The invention belongs to the technical field of preparation and application of metal organic framework adsorption materials, and particularly relates to a Ti-MOF-based nanometer material, a preparation method thereof and application of the Ti-MOF-based nanometer material in methylene blue dye adsorption, and a hierarchical pore Ti-MOF-based nanometer methylene blue adsorbent rich in oxygen vacancies is constructed by means of a temperature regulation and control ligand pyrolysis strategy. Adsorption performance tests show that the adsorbent has high adsorption capacity and high adsorption rate on methylene blue, due to the fact that hierarchical pores in the adsorbent promote diffusion and mass transfer of methylene blue, and oxygen vacancies enhance electronegativity of the surface of the adsorbent and provide more adsorption active sites.

The invention relates to the field of application of dielectric energy storage materials, and discloses application of a polyimide film in a dielectric energy storage material. The polyimide is prepared by copolymerizing bis [4-(4-aminophenoxy) phenyl] sulfone and 4, 4 '-(hexafluoroisopropene) diphthalic anhydride, or copolymerizing bis [4-(3-aminophenoxy) phenyl] sulfone and 4, 4'-(hexafluoroisopropene) diphthalic anhydride, or copolymerizing bis [4-(3-aminophenoxy) phenyl] sulfone and 4, 4 '-(hexafluoroisopropene) diphthalic anhydride. Ether bonds are introduced to two sides of diphenyl sulfone to destroy a continuous conjugated structure between an imide ring and diphenyl sulfone, hexafluoroisopropylene with high electronegativity is introduced into a dianhydride unit, and high-temperature insulativity is improved through interaction of the three. When the prepared polyimide film is used as a dielectric medium energy storage material, the high-temperature insulation property is improved while the heat resistance and the relatively high dielectric constant are maintained, so that the energy storage property of a capacitor is improved. The discharge energy density of 7.25 J / cm < 3 > and 4.79 J / cm < 3 > is realized at 200 DEG C and 250 DEG C respectively, and the efficiency is greater than 90%.

The invention relates to the technical field of organic photoelectric materials and photovoltaic devices, in particular to a fluorine-substituted benzimidazolyl aniline compound and a synthesis method and application thereof. The structural general formula of the compounds is as shown in a formula I in the specification. The compound is introduced into a perovskite precursor solution as an additive and is used for preparing a perovskite thin film and a trans-perovskite solar cell. According to the compound provided by the invention, synergistic passivation of multi-site defects such as uncoordinated Pb < 2 + > and iodine vacancies is realized through aniline amino and benzimidazole ring N atoms in molecules, and non-radiative recombination is remarkably reduced; the strong electronegativity of fluorine atoms can enhance the electrostatic interaction between molecules and a perovskite Pb-I skeleton, meanwhile, a large conjugated system promotes pi-pi accumulation, and experimental results show that the photoelectric conversion efficiency of a champion device based on the additive can reach 23.3%; .

The invention relates to the technical field of gas production materials, and discloses preparation and application of a high-nitrogen energetic gas production material, triazole has high-energy and multi-nitrogen characteristics, nitryl compounds have high energy, and the combination of triazole and nitryl compounds enables the gas production material to have the characteristics of large gas production rate, low-temperature combustion, less harmful gas and the like; the molecular structure contains a large number of N-N, C-N and C = N bonds and has high enthalpy of formation, meanwhile, the content of C and H in the molecule is low, the density of the energetic material can be improved, the electronegativity of nitrogen and oxygen atoms in the structure is high, and the energetic material is a painful energetic material and has high safety in the using process; compared with similar gas production materials, the prepared gas production material has the advantages that the gas production rate is greatly increased, the amount of solid residues is greatly reduced, the added adhesive has no corrosivity, the prepared gas production material is good in fluidity, the external additive can play a role in slagging, and the residues are not prone to being sprayed out.

The application belongs to the technical field of industrial flue gas purification treatment, and particularly relates to a manganese-cadmium bimetallic denitration catalyst and a preparation method and application thereof. The manganese-cadmium bimetallic denitration catalyst has a pore diameter of 4.4-27 nm, a pore volume of 0.25-0.35 cm 3 / g, and a specific surface area of 75-85 m 2 / g. The number ratio of medium acid and strong acid sites contained in the manganese-cadmium bimetallic denitration catalyst is (7-8):1. The manganese-cadmium bimetallic denitration catalyst has the advantages that the manganese-cadmium bimetallic denitration catalyst utilizes the unique synergistic effect of the moderate difference in electronegativity between manganese and cadmium, realizes one-way transfer of electrons from cadmium to manganese, gives the catalyst a moderate SO2 adsorption energy, avoids sulfation of active sites, the difference in radius between Cd 2+ and Mn 2+ induces the skeleton to produce an expansion and cracking type defect, forms a 4.4-27 nm wide distribution mesoporous structure, reduces deposition of sulfate and ammonium salt, and presents a hierarchical porous structure, which enhances gas transfer in the reaction process and significantly improves the catalytic efficiency.

The present invention provides a dual-cell-targeted luminescent near-infrared fluorescent probe (E)-4-(4-(bis(4-(2-morpholinoethoxy)phenyl)amino)styryl)-1-(2-hydroxyethyl)quinolin-1-ammonium hexafluorophosphate (V), namely the fluorescent probe MoTQu. This dual-cell-targeted fluorescent probe contains a quinolinium cation moiety and targets mitochondria through electrostatic interaction with the electronegative mitochondrial membrane; the introduction of a weakly basic morpholine ring in the triphenylamine tail chain of this fluorescent probe targets lysosomes. At the same time, the preparation method and application of this probe are disclosed. The fluorescent probe of the present invention can not only light up different organelles in response to time, but also effectively improve the killing efficiency of cancer cells through the synergy of mitochondrial- and lysosome-targeted photodynamic therapy, and thus has a powerful effect on the ablation of photodynamic cancer cells.

This invention discloses a heterostructure of sodium-ion battery anode material, its construction method, and its performance prediction method. It belongs to the field of electrochemical energy storage technology, and obtains Nb by substituting Nb atoms with Ge or Sn. 1‑ x A x CO2, then combined with 2D SiC to construct SiC / Nb 1‑x A x A CO2 heterostructure was developed to obtain a sodium-ion battery anode material with improved electrochemical performance. The monolayer Nb2CO2 MXene provided good electronic conductivity and structural stability for the anode material, while the introduction of SiC ensured excellent structural stability and high theoretical capacity. The combination of SiC and Nb... 1‑x A x The heterostructure interface formed by CO2 plays an important role in promoting electronic conductivity and Na ion transport. Due to the similar electronegativity of Ge and Sn to C, the A-C bond formed between the alloying elements and C is stronger than the Nb-C bond, thus enhancing the stability of the heterostructure and maintaining the integrity of the electrode structure.

A contact separation mode triboelectric soft X-ray emission device comprises a motion structure used for providing power for reciprocating linear motion; the contact structure is arranged in a vacuum environment and comprises an active contact unit and a passive contact unit which can move relatively to perform periodic contact and separation, and the active contact unit is connected with the moving structure; the contact surface of the active contact unit and the contact surface of the passive contact unit are respectively covered with materials with different electronegativity. The contact force measuring unit is used for measuring the contact pressure between the active contact unit and the passive contact unit in real time; wherein the motion structure is configured to adjust a driving parameter of the motion structure according to the contact pressure of the contact force measuring unit, so as to control the output characteristic of the soft X-ray.