43 results about "Naphthalene diimide" patented technology

The invention relates to the technical field of catalysts, and discloses a preparation method and application of a copper-based metal-organic framework catalytic material.The preparation method comprises the following steps that S1, cuprous salt, N, N '-bis (5-aminonicotinyl) naphthalimide and a solvent are mixed, and a mixture is obtained; s2, heating the mixture to a reaction temperature, carrying out a constant-temperature reaction, and cooling to obtain a crystal; and S3, washing and drying the crystal to obtain the copper-based metal-organic framework catalytic material. According to the preparation method of the copper-based metal-organic framework catalytic material provided by the invention, N, N '-bis (5-aminonicotinyl) naphthalimide is used as an organic ligand to prepare the copper-based metal framework Cu-PTD with N / O co-coordination, and the copper-based metal framework Cu-PTD has relatively strong electrocatalytic carbon dioxide reduction and electron transfer capabilities; and the catalyst has relatively high selectivity on electrocatalytic carbon dioxide reduction products.

The preparation method comprises the following steps: carrying out reflux reaction on 4-bromo-1, 8-naphthalic anhydride and primary amine in an organic solvent to obtain an intermediate product, and carrying out C-N coupling reaction on the intermediate product, a compound containing a nitrogen secondary amine electron-donating group, alkali and a catalyst in the organic solvent to obtain the double-state emission fluorescent dye. The two-state emission dye is obtained. An amino auxochrome group of a bridge ring structure is modified in a 4-bromine-1, 8-naphthalimide parent, the fluorescence quantum yield of the dye in a polar solvent is improved through the characteristic that nitrogen atom lone pair electrons of the nitrogen-containing bridge ring structure are not easy to overturn, and pi-pi stacking, which is not beneficial to emission, of the dye is inhibited through the large steric hindrance effect of the bridge ring structure; the dye shows bright fluorescence emission in non-polar and polar solvents, also has a very strong fluorescence quantum yield in a solid state, and shows a quantum yield greater than 94% when the dye is dispersed in an EVA (Ethylene-Vinyl Acetate) film.

The invention discloses a cellulose acetate based 1, 8-naphthalimide fluorescent probe for detecting Hg < 2 + > as well as a preparation method and application of the cellulose acetate based 1, 8-naphthalimide fluorescent probe. The preparation method comprises the following steps: by taking 4-bromo-1, 8-naphthalic anhydride as a raw material, carrying out condensation reaction on the 4-bromo-1, 8-naphthalic anhydride and 4-aminobutyric acid to prepare 4-(4-bromo-1, 8-naphthalic diimide) butyric acid (BNA-B); the BNA-B and piperazine are subjected to a substitution reaction, and a compound PNA-B is prepared; the PNA-B and 4-(bromomethyl) pyridine hydrochloride are subjected to a substitution reaction, and a compound PNA-B is prepared; and the PNA-B and cellulose acetate (CA) are subjected to an esterification reaction, such that the cellulose acetate-based 1, 8-naphthalimide fluorescent probe PNA-CA is prepared. The compound can specifically recognize Hg < 2 + >, after Hg < 2 + > is added into a PNA-CA acetonitrile / PBS buffer solution under 365nm ultraviolet irradiation, the fluorescence color of the solution is changed from colorless to yellow, the response time is 20s, the detection limit reaches 9.3 * 10 <-8 > M, and the probe has a good application prospect.

This invention discloses a cellulose acetate-based 1,8-naphthalenedimide fluorescent probe for detecting hydrazine, its preparation method, and its application. The invention uses 4-bromo-1,8-naphthalenedimide as a raw material, which undergoes a condensation reaction with 4-aminobutyric acid to obtain 4-(4-bromo-1,8-naphthalenedimide)butyric acid (BNA-B); BNA-B undergoes a coupling reaction with 4-formylphenylboronic acid to obtain 4-(4-(4-formylphenyl)-1,8-naphthalenedimide)butyric acid (FNA-B); compound FNA-B then undergoes an esterification reaction with cellulose acetate (CA) to obtain the cellulose acetate-based 1,8-naphthalenedimide fluorescent probe FNA-B-CA. This compound specifically recognizes hydrazine. Under 365 nm ultraviolet light irradiation, the addition of hydrazine to a DMF / H2O solution of FNA-B-CA changes the fluorescence color of the solution from bright blue to colorless, indicating a detection limit of 8.4 × 10⁻⁶ for hydrazine. ‑8 M has promising applications as a fluorescent probe for the detection of hydrazine.

The present invention belongs to the technical field of semiconductor materials, and discloses a polymer with alternating arrangement of perylene diimide and naphthalene diimide, and its preparation method and application. The preparation method of the polymer includes the following steps: mixing naphthalic anhydride, alkanolamine and an organic solvent, and reacting to obtain naphthalene diimide-diol; mixing naphthalene diimide-diol, bromoacetic acid, 4-dimethylaminopyridine, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and an organic solvent, and reacting to obtain naphthalene diimide-dibromide; mixing naphthalene diimide-dibromide, perylene diimide-diamine and an organic solvent, and reacting to obtain the polymer. The present invention takes naphthalene diimide and perylene diimide as the core structures, and through design and synthesis, obtains a polymer with good water and alcohol solubility. This polymer can integrate the physical and chemical properties of the above two structural units, providing a guarantee for its application as an electron transport layer material in solar cells.

The invention discloses a wavelength selective photoresponse strontium-based metal organic framework eutectic material as well as a preparation method and application thereof. A metal node of the material is strontium ions, N, N '-bis (5-isophthalic acid) naphthalimide is used as a ligand, anthracene and a derivative thereof are used as objects, N, N-dimethylformamide is used as a solvent, and the material is obtained through solvothermal reaction. The material is composed of an electron donor (D) and an electron acceptor (A), and is a strontium-based MOF eutectic with an infinitely extended pi stacked A-D-D-A configuration. The MOF eutectic material has lattice characteristics of a tetragonal crystal system, a space group is I 41 / a, and cell parameters are a = b = 28.42240 (10), c = 13.71600 (10), and alpha = beta = gamma = 90 degrees. Sr-NDI at An has unique wavelength selective photoresponse property: ultraviolet light triggers [4 + 4] dimerization of an object anthracene, red light excites [4 + 2] reaction of anthracene and singlet oxygen, and near-infrared light induces generation of free radicals.

The invention relates to the technical field of material chemistry, and provides an aperture regulation and control method and application of a naphthalimide hydrogen bond organic framework. By changing the ratio of N, N-dimethylformamide to water, the hydrogen bond interaction between water and 2, 7-bis (4H-1, 2, 4-triazole-4-yl) benzo [lmn] [3, 8] phenanthroline-1, 3, 6, 8 (2H, 7H)-tetraone is changed, so that the pore size of the naphthalimido hydrogen bond organic framework is regulated and controlled. When the water content is relatively low, the self-hydrogen-bond aggregation characteristic of water is weakened by DMF, the hydrogen bond interaction between water and NDIT is enhanced, and large-aperture NDIT-HOF-1 is obtained; when the water content is increased, the self hydrogen bond aggregation characteristic of water is enhanced, so that the hydrogen bond interaction between water and NDIT is weakened, and small-aperture NDIT-HOF-2 is obtained. An NDIT-HOF pore channel contains an electron-rich nitrogen site from triazole and an electron-rich oxygen site from water, and a nitrogen-oxygen synergistic adsorption site can realize selective adsorption of Th (IV). The water participating in framework assembly also enhances the hydrophilic performance of the NDIT-HOF, accelerates adsorption kinetics, realizes rapid adsorption of Th (IV) in a complex environment, and has a good application prospect.

[Problem] To provide a sealant composition for a protective film layer, said sealant composition being made of a resin and being cured at a lower temperature than the firing temperature of an overcoat agent comprising a glass paste. [Solution] This sealant composition for a protective film layer is characterized by including: a bisnadimide compound that is represented by chemical formula 1 and in which a divalent hydrocarbon group (R1) is bonded to nitrogen atoms of imide groups having norbornene skeletons; a phenolic resin; and a reactive diluent that has one or more epoxy groups. A resin cured film that has superior heat resistance can be formed using this composition, and thus this composition can be used as a sealant for a protective film layer of a chip resistor, a chip capacitor, or similar.

The present invention is entitled: Naphthalene diimide derivatives incorporating piperidine as cathode interface materials for organic solar cells. This invention relates to the field of materials science, specifically to a compound and its applications, preparation methods, organic solar cell cathode interface materials, and organic solar cells. The structure of the compound is as follows: [structure omitted for brevity]. Wherein, n is a natural number between 0 and 6, and X1 and X2 are independently selected from [selections omitted for brevity]. This compound can be used as a cathode interface material for organic solar cells, achieving high photoelectric conversion efficiency. By incorporating piperidine, the photostability of the material is improved, exhibiting stronger photostability compared to commonly used tertiary amine side chain naphthalene diimide derivatives. This compound can also be applied to devices such as organic light-emitting diodes and perovskite solar cells.

The present invention relates to a polymer solar cell comprising an electron transport layer including a novel diimide derivative that comprises a naphthalene diimide or perylene diimide backbone. Since the polymer solar cell according to the present invention comprises an electron transport layer including an electrolyte composed of the diimide derivative, which can replace a ZnO thin film, a high-temperature process is not required during the manufacture of the polymer solar cell, and a high-efficiency inverted type polymer solar cell can be produced.

The invention provides a near-infrared two-region aggregation-induced emission material, a preparation method thereof and application of the near-infrared two-region aggregation-induced emission material in preparation of I-type photodynamic drugs, and belongs to the technical field of biomedical engineering. The NDA / BA nano-particles are constructed by taking the obtained near-infrared two-region aggregation-induced emission material as a donor and thiaphthalimide as a receptor and integrating the donor and the receptor through poloxamer F127, and the NDA / BA nano-particles are further used for preparing I-type photodynamic drugs. The NDA / BA nano-particles show remarkably enhanced I-type photodynamic performance, the total active oxygen,. OH and O2 <.-> generation amount of the NDA / BA nano-particles are remarkably increased, the NDA / BA nano-particles are proved to have accurate near-infrared two-region imaging and photodynamic therapy effects, and a new scheme with a wide prospect is provided for near-infrared two-region image guided photodynamic diagnosis and treatment integration.

This invention discloses a series of zirconium-based MOFs and their preparation methods and applications for electrochromic thin films, specifically involving two MOF materials with electrochromic properties. The materials are framework materials with one-dimensional channels, one example having a unique csq topology. The metal is zirconium, and the ligand is a tetracarboxylic acid ligand containing a naphthalimide group. The one-dimensional channels include triangular channels with a diameter of 1.2 nm and hexagonal channels with a diameter of 2.7 nm. Both MOFs crystallize in the hexagonal P6 / mmm crystal system. The cell parameters of NKM-908 are a = b = 40.285, c = 23.6990, α = β = 90°, γ = 120°. The cell parameters of NKM-908-TPDC-X are a = b = 40.54, c = 23.45, α = β = 90°, γ = 120°. Here, X represents different substituents modified by the linear dicarboxylic acid ligand side chain. This application also provides the two methods for preparing the aforementioned MOF thin films, which feature simple processes, mild reaction conditions, and good reproducibility. The NKM-908 electrochromic thin film can achieve reversible color switching, changing from essentially colorless to light yellow and then to green. The NKM-908-TPDC-X thin film exhibits different color changes depending on the difference in X.

The invention belongs to the technical field of photocatalytic material preparation, and relates to a preparation method and application of a decatungstate-containing hybrid material, in particular to application of the decatungstate-containing hybrid material in a photocatalytic aryl acetic acid decarboxylation reaction. The preparation method comprises the following steps: taking N, N '-bis (3, 5-dimethyl-1H-2-pyrrolyl)-1, 4, 5, 8-naphthalimide, tetrabutyl phosphonium decatungstate and zinc nitrate hexahydrate as raw materials, stirring in a mixed solvent, and standing to obtain the decatungstate-containing hybrid material. The material has the advantages of higher thermal stability, low requirement on synthesis equipment, simplicity and convenience in operation, low cost and large-scale production, can be used for catalyzing the oxidative decarboxylation reaction of aryl acetic acid to generate corresponding aryl formaldehyde under the irradiation of visible light, has the characteristics of high conversion rate and high chemical stability, and is suitable for industrial production. And the catalyst has extremely high catalytic activity for converting aryl acetic acid into aryl formaldehyde through oxidative decarboxylation.

A method for detecting and discriminating between per- and poly-fluoroalkyl substances (PFAS) in an aqueous sample includes exciting the aqueous sample alone at a wavelength of between 330 - 390 nm, contacting the sample with a detection reagent comprising a naphthalene diimide-based cationic fluorophore, exciting the detection reagent and sample together at the excitation wavelength, and quantifying a change in a fluorescence emission intensity of the detection reagent while in contact with the sample relative to the fluorescence intensity of the detection reagent prior to being contacted with the sample.

Provided herein are naphthalene diimide (NDI) compounds and their use in thin films, methods of making thin films, photovoltaic devices comprising NDI thin films, and methods of making photovoltaic devices comprising NDI thin films. Additionally contemplated are organic light-emitting diodes comprising NDI thin films, photodetectors comprising NDI thin films, and organic field-effect transistors (OFETs) comprising NDI thin films.

The invention belongs to the technical field of composite material preparation, and particularly discloses a high-performance carbon fiber / epoxy resin composite material and a preparation method thereof. The preparation method comprises the following steps: heating and refluxing 3, 4, 9, 10-perylenetetracarboxylic dianhydride, amine-terminated polyether D230, triethylamine and N, N-dimethylformamide in a nitrogen atmosphere, so as to prepare perylene naphthalene diimide; mixing the precursor with graphene oxide in N, N-dimethylformamide, and carrying out a heating reaction to obtain lt; pDI, GOgt; the preparation method comprises the following steps: dissolving the raw materials in an acetone solution, mixing with bisphenol A epoxy resin and 4, 4 '-methylenebis (2-ethyl) aniline, and carrying out vacuumizing defoaming and curing reaction to obtain 1t; pDI, GOgt; modified epoxy resin; removing a sizing agent from the carbon fibers to obtain DCF, and then immersing the DCF into lt; pDI, GOgt; drying the N, N-dimethylformamide solution to obtain modified carbon fibers; immersing the mixture at the temperature of 1t; pDI, GOgt; and carrying out pressurizing and heating reaction in modified epoxy resin, and cooling to obtain the high-performance carbon fiber / epoxy resin composite material. The high-performance carbon fiber / epoxy resin composite material has the characteristics of high strength, high toughness and excellent stress concentration resistance, and has remarkable industrial application value.

The invention relates to the technical field of organic solar cell electron transport layers, and provides a naphthalimide electron transport layer and a preparation method thereof. The naphthalimide electron transport layer has a structural formula as shown in a formula (I). The synthesis process is simple, an intermediate product does not need to be separated, histidine, 1, 4, 5, 8-naphthalene tetracarboxylic anhydride and N, N-dimethyl dipropyl triamine are used as raw materials, and the naphthalene diimide electron transport layer is prepared through two-step continuous reaction in an N, N-dimethyl formamide (DMF) solvent. And amido in an acyl polar side chain endows the material with environment-friendly water / alcohol-soluble green processing. Meanwhile, due to the fact that the NDI-His-NN based on the histidine imidazole ring contains more nitrogen atoms, the work function of an Ag electrode is reduced, the interface potential barrier is remarkably reduced, ohmic contact is formed, extraction and transmission of charges are promoted, and finally the performance of the organic solar device is improved.

The invention belongs to the field of multifunctional optical materials, and particularly relates to a photothermal programmed regulation and control multicolor dynamic room-temperature phosphorescent pyridinium naphthalimide doped polymer film and application of the photothermal programmed regulation and control multicolor dynamic room-temperature phosphorescent pyridinium naphthalimide doped polymer film. Different pyridine structural units (such as 4-aminopyridine, aminomethylpyridine and 3-aminopyridine) are introduced into light-responsive naphthalimide nitrogen sites, then a series of pyridinium naphthalimide derivatives (NDI-1, NDI-2 and NDI-3) are synthesized, and then the pyridinium naphthalimide derivatives are doped into a rigid polyvinyl alcohol matrix to construct the composite film. And the multifunctional polymer film with photochromism, thermochromism and room-temperature phosphorescence multi-dynamic adjustable multi-stimulus response is prepared. The method has important application potential in the fields of dynamic advanced anti-counterfeiting, high-density information storage, intelligent optical sensing and photoresist dye.

The application discloses a hydrogen-bonded organic framework eutectic material, a preparation method thereof and application thereof in photocatalytic degradation of pollutants, and the hydrogen-bonded organic framework eutectic is a eutectic formed by assembling N,N'-di(5-m-phenylenediformyl) naphthalene diimide hydrogen-bonded organic framework and hexa-peri-hexabenzocoronene. The eutectic material has both porous structure and intermolecular charge transfer interaction. The hydrogen-bonded organic framework eutectic can efficiently photocatalyze removal of phenol which is difficult to degrade and highly toxic, and has great application value.

The invention discloses a donor-acceptor type chiral macrocyclic eutectic material as well as a preparation method and application thereof, and belongs to the field of luminescent materials. The chemical formula of the eutectic material is C76H52N6O12, and the chemical formula is C76H52N6O12. The crystal belongs to an orthorhombic system, and the space group is P212121. The invention also provides a preparation method of the eutectic material, and the preparation method comprises the following steps: dissolving cyclotrimeric naphthalene diimine and pyrene in a solvent, and reacting to obtain the eutectic material. When the cyclotrimeric naphthalene diimine is in an R type, an R type eutectic material is obtained; and when the cyclotrimeric naphthalene diimine is S-type, obtaining the S-type eutectic material. The synthesis method has the advantages of simplicity, low production cost, mild reaction conditions and suitability for large-scale production. The material is a crystalline pure organic eutectic material, has the optical properties of circularly polarized light of dark red and near-infrared emission and two-photon excited dark red and near-infrared emission, is easy to process and stable, and has certain device potential.

The invention discloses a preparation method and application of a metal Salen active site embedded zirconium-based metal organic framework, and belongs to the technical field of metal organic framework materials and photocatalysis. The invention particularly relates to a method for embedding M-Salen active sites containing different metals into a Zr-MOFs (NKM-908) material with a one-dimensional pore channel. According to the Zr-MOFs material, zirconium is used as metal, tetracarboxylic acid containing a naphthalimide group is used as a ligand, and the Zr-MOFs material has a unique csq topological structure. The preparation method comprises the following steps: embedding a carboxyl-containing M-Salen complex (M = Co, Cu, Co2 or Cu2) into NKM-908 through coordination of carboxyl and a Zr6 cluster, so as to obtain the M-NKM-908. The composite material can show the performance of efficient photocatalytic reduction of CO2 to prepare synthesis gas under visible light, and has the advantages of high activity, highly adjustable synthesis gas proportion and strong catalyst stability. The method provides a new way for efficient conversion of CO2 and precise preparation of synthesis gas, and has high industrial application value.

The invention relates to the technical field of photochromic coordination polymers, in particular to a naphthalimide-based photochromic coordination polymer and a preparation method thereof. The chemical formula of the naphthalimidogen photochromic coordination polymer is [Sr (AlaNDI) (18-C-6)] n, AlaNDI is deprotonated (2S, 2 'S)-2, 2'-(1, 3, 6, 8-tetraoxo-1, 3, 6, 8-tetrahydrobenzo [1mn] [3, 8] phenanthroline-2, 7-diyl)-dipropionic acid), and AlaNDI is deprotonated (2S, 2 'S)-2, 2'-(1, 3, 6, 8-tetraoxo-1, 3, 6, 8-tetrahydrobenzo [1mn] [3, 8] phenanthroline-2, 7-diyl)-dipropionic acid. The 18-C < 6 > is 18-crown-6; the naphthalimide-based photochromic coordination polymer is a trigonal system, the space group is P3212, under the irradiation of a xenon lamp, the color of the coordination polymer is quickly changed into dark brown from light yellow within 30 seconds, a wide absorption band extending to a near-infrared region appears, and an obvious photochromic behavior is shown.

The invention discloses a cellulose acetate based 1, 8-naphthalimide fluorescent probe for detecting hydrogen sulfite (HSO3 <->) as well as a preparation method and application of the cellulose acetate based 1, 8-naphthalimide fluorescent probe. The preparation method comprises the following steps: by taking 4-bromo-1, 8-naphthalic anhydride as a raw material, carrying out condensation reaction on the 4-bromo-1, 8-naphthalic anhydride and 4-aminobutyric acid to prepare 4-(4-bromo-1, 8-naphthalic diimide) butyric acid, namely BNA-B; the preparation method comprises the following steps: carrying out coupling reaction on BNA-B and 4-formyl phenylboronic acid to prepare 4-(4-(4-formyl phenyl)-1, 8-naphthalimidoyl) butyric acid, namely FNA-B; the preparation method comprises the following steps: carrying out aldol condensation reaction on FNA-B and 1, 2, 3, 3-tetramethyl-3H-indole iodide to prepare a compound INA-B; and the compound INA-B and cellulose acetate (CA) are subjected to an esterification reaction, such that the cellulose acetate-based 1, 8-naphthalimide fluorescent probe INA-B-CA is prepared. The compound INA-B-CA can specifically recognize HSO3 <->, under the irradiation of 365nm ultraviolet light, after HSO3 <-> is added into a DMSO / PBS solution of INA-B-CA, the fluorescence color of the solution is changed from yellow to blue, and the probe has a good application prospect.

The present invention provides a coordination polymer with photochromic properties, as well as its preparation method and application. The chemical formula of the polymer is [Cd2(NDI-ATZ)(H2PMD)(DMF)4]; the present invention also relates to the preparation method and application of the polymer. In the present invention, naphthalene diimide, which has excellent electron-deficient properties, is used as an electron acceptor and hybridized with an aromatic carboxylic acid electron donor through the coordination of metallic cadmium to form a naphthalene diimide-based cadmium coordination polymer material with photochromic properties. Based on the intermolecular electron transfer mechanism, the color-changing material can change color under ultraviolet light. The coordination polymer prepared by the present invention produces rapid photoresponsive behavior under ultraviolet light and has excellent fatigue resistance, providing a new approach for the development of photoresponsive materials.

The invention discloses a chiral crystalline organic material as well as a preparation method and application thereof, and belongs to the field of organic solid-state luminescent materials. The chemical formula of the chiral crystalline state organic material is C41H30Cl2N4O8. The chiral crystalline state organic material is a chiral crystalline state organic material. The preparation method of the chiral crystalline organic material comprises the following steps: dissolving cyclodimeric naphthalene diimide in dichloromethane, and volatilizing to obtain the chiral crystalline organic material after the solvent is volatilized. The chiral crystalline organic material is a pure organic crystalline material capable of improving circularly polarized light emission of the order of magnitude of a glm value, and on the basis of realizing circularly polarized light, bright green light of two-photon absorption and two-photon excitation is realized at the same time.

The invention discloses application of a multi-charge derivative based on naphthalimide in a flowing electrochromic device, and belongs to the technical field of preparation of intelligent electrochromic devices. A plurality of charged functional groups are introduced into the derivative, the redox activity and the electrochromism performance are improved, the derivative serves as an active electrolyte to be combined with a flow battery framework and electrochromism, reversible conversion from a full-transparent state to a full-black state is achieved, and the derivative has the full-wave-band absorption characteristic. Compared with a traditional device, the flowing electrochromic device has the advantages that a molecular self-recovery mechanism is established by electrolyte flowing, and the cycle life is prolonged; large-area devices are uniformly colored; the functions of self-erasing light writing, light-driven energy storage and the like are achieved; the optical contrast of the device reaches 96%, the cycle exceeds 30,000 times, and the coloring efficiency is high. The building energy-saving simulation shows that the indoor temperature rise can be effectively inhibited under strong light, and the global energy-saving potential is remarkable. An innovative scheme is provided for a high-performance and low-cost electrochromic system, and the method has wide prospects in the fields of intelligent buildings, optical management and the like.

There is provided a redox flow battery (1) comprising a negative electrolyte solution (2) and a positive electrolyte solution (3) wherein the negative electrolyte solution (2) comprises an optionally modified naphthalene diimide, NDI, or a salt thereof, and the positive electrolyte solution (3) comprises a cyclic nitroxyl radical derivative having at least two cyclic nitroxyl radical groups, or a salt thereof.

The invention discloses a carboxymethyl chitosan graft polymer based on naphthalimide functionalization and a preparation method of the carboxymethyl chitosan graft polymer, and discloses a novel polymer, namely the carboxymethyl chitosan graft polymer based on naphthalimide functionalization. The polymer integrates three functional units through molecular design: a carboxymethyl chitosan skeleton, a naphthalimide unit and alkali metal ions. The preparation method of the polymer relates to condensation grafting reaction and ion exchange functionalization, the process is simple and convenient, and the yield is high. In the aspect of application, the polymer is used as an interface modifier, and defect passivation, charge transfer enhancement and crystallization optimization are synergistically realized on an electron transfer layer of a perovskite solar cell through in-situ pyrolysis, so that the efficiency and stability of a device are improved. The scheme of single material and one-step method solves the problems of single function and complex process in the prior art.

The present disclosure provides new electron transporting naphthalene-diimide-based and naphthalene-imide-based compounds containing phosphonic or phosphoric acid as an anchoring group, and their use as electron transport materials in optoelectronic and / or photoelectrochemical devices, in particular photovoltaic devices and a method of fabrication thereof. The structure of the compounds of the present invention allows covalent binding to the transparent conducting oxide surface with suitable energetic levels, minimized thickness at low temperatures.

The invention relates to the technical field of metal organic framework photosensitive materials, and discloses a preparation method of a cadmium-naphthalimide photochromic material. According to the method, a cadmium salt, a naphthalene diimide ligand (N, N '-bis (4-pyridylmethylene)-1, 4, 5, 8-naphthalene diimide) and a thiophene-2, 5-dicarboxylic acid ligand are used as reagent raw materials, a solvothermal method is adopted for constant-temperature synthesis reaction, the structural formula of the photochromic material obtained through the reaction is [Cd (DPMNI) (H2TDC)] n (DPMNI = (N, N'-bis (4-pyridylmethylene)-1, 4, 5, 8-naphthalene diimide), H2TDC = thiophene-2, 5-dicarboxylic acid), and the structural formula of the photochromic material obtained through the reaction is shown in the description. The unit cell parameters are as follows: a = 23.259 (4), b = 10.2229 (17), c = 12.294 (2), and alpha = beta = gamma = 90 degrees. The preparation method is simple and easy to implement, convenient to operate and capable of realizing large-scale production, and the prepared cadmium-naphthalimide photochromic material can generate obvious color change within an extremely short time after being in contact with amine substances, so that not only can a detection result be fed back in time, but also filter paper can be made, and the application prospect is wide. The amine substances are visually detected, so that the detection efficiency is greatly improved, and various field emergency detection requirements are met.