50 results about "Dendritic Compounds" patented technology

Novel self-immolative dendritic compounds which have a plurality of cleavable trigger units and hence can release a chemical moiety at their focal point upon a multi-triggering mechanism are disclosed. The novel self-immolative dendritic compounds are gated by a molecular logic gate, being either an AND or OR logic gate and hence can be beneficially used in a variety of biological, chemical and physical applications. Processes of preparing, compositions containing and methods utilizing the novel dendritic compounds are further disclosed.

The invention belongs to the technical field of desulfurization, and relates to an absorbent for selectively removing H2S and organic sulfur. An aqueous solution formed by mixing 1 to 15 mass percent of polyamide-amine dendritic compound with high desulfurization selectivity and 50 to 10 mass percent of alcohol amine is used as the absorbent. Under the conventional desulfurization process flow and the unit equipment condition, the absorbent can selectively remove the H2S or the organic sulfur or the H2S and the organic sulfur from one of CO2 and H2S and / or COS, CS2, RSH and the like or mixed airflow of multiple organic sulfurs, has better H2S removal selectivity and higher organic sulfur removal rate compared with a conventional alcohol amine solvent, and reduces the circulating quantity of the solution.

The invention discloses a carbon nanotube / dendritic compound / nanoparticle composite material and a preparation method thereof. The material is prepared by coating multi-walled carbon nanotubes (NWCNTs) orderly with a dendritic compound polyamidoamine (PAMAM) and metal sulfides or metal nanoparticles from interior to exterior. The PAMAM modifies the carbon nanotubes through a covalent bond, and the metal sulfides or metal nanoparticles modify the carbon nanotubes in situ through self-assembly. The carbon nanotubes, the dendritic compound and nanoparticles have strong interactions. The carbonnanotubes modified in the way have better dispersibility and optical limiting property than corresponding unmodified carbon nanotubes. In addition, the preparation method of the invention has the advantages of simple operation, easily available raw material, low cost and the like, thus suitable for industrial production.

The invention relates to a preparation method of a polyamide-amine dendritic compound. According to the preparation method, ethanediamine and methyl acrylate are used as initial raw materials, wherein during Michael addition reaction, the mole ratio of methyl acrylate to the base number of to-be-prepared semi-algebraic polyamide-amine ends is (1.5-3):1, and during amidation reaction, the mole ratio of ethanediamine to the base number of to-be-prepared integral-algebraic polyamide-amine ends is (4-6):1. The preparation method disclosed by the invention can be used for optimizing the mole ratios of the base numbers of EDA, MA and PAMAM ends and operating parameters of reduced pressure distillation and simply and conveniently preparing the high-yield and high-purity polyamide-amine dendritic compound, and can be widely applied to the fields of macromolecular materials, gas separation or purification and the like.

The invention discloses a method for manufacturing a dendritic fluorescent chemosensor and the method for detecting Fe<3+> in a sample. The method for manufacturing the dendritic fluorescent chemosensor is mainly technically characterized by comprising the following steps of: performing reaction on aminoacetaldehyde dimethyl acetal, methyl acrylate and ethylenediamine in a methanol medium under the protection of argon at the temperature of 55 to 65 DEG C for 24 to 30 h to obtain a dendritic compound; and reacting in darkness the dendritic compound with rhodamine B hydrazide in the methanol medium under the protection of the argon at room temperature for 48 to 58 h by taking 4-hydroxybenzaldehyde as a crosslinker, and performing filtration and washing to obtain the dendritic fluorescent chemosensor. In the detection method, the mixed solution of ethanol and water serves as the medium, and the Fe<3+> content of various samples is determined by utilizing a fluorophotometer in Tris-HCl buffer solution with the pH value of 6.8 to 7.5. The dendritic fluorescent chemosensor has the linear range of 0 to 10.0 mu g.mL<-1>, the detection limit of 0.026 mu g.mL<-1>, and sensitivity and selectivity which are valuable in analytical chemistry.

This invention relates to a method for modifying dye of surface of a polypropylene material, which first of all uses different gas plasma to process the fiber material including: preprocessing the surface of the fiber material then processing the material with N2, H2 and O2 plasma and then uses graft to process it including: applying a tree-like monomer graft liquid to modify the processed polypropylene material.

Dendritic compounds are provided. The dendritic compounds include an anionic dendron that has a focal point having an anionic group and a linking group, and a photoreactive cation. The dendritic compounds find particular use as photoacid generators. Also provided are photoresist compositions that include such a dendritic compound, as well as methods of forming electronic devices with the photoresist compositions. The dendritic compounds, photoresist compositions and methods find particular applicability in the manufacture of semiconductor devices.

The invention discloses a preparation method of nano-particles of cobalt, which comprises the steps of: adopting polyamide-amine dendritic compounds taking benzene ring as core as a template agent to mix with cobalt salts, causing the Co<2+> to combine in the interior and the exterior of the empty cavity of the dendritic compound by utilizing the strong coordination of a plurality of aminoes existing in the polyamide-amine dendritic compound, restoring by adopting a reducing agent so that the bivalence Co to change into zero valency Co. The preparation method of the invention solves the difficulty that the existing liquid reduction method is unable to prepare the nano-particles of cobalt with small grain size, good dispersancy and simple component, realizes producing the nano-particles of cobalt of even sphere shape with 4 to 10nm of mean grain size, good dispersancy and 99.5 to 99.9 percent of purity. Besides, the preparation method of the invention has simple preparation method, easy obtained materials, low cost, mild conditions and low demand on requirement, environment friendly process and the side products thereof are non-polluted and is applied to mass industrialized production.

Asymmetrical dendritic compound of the Formula (I) as described herein can contain multiple functional moieties as represented by R1 and R2 in Formula (I). In various embodiments, the functional moieties include N-Boc, a targeting ligand, a drug, and / or an imaging agent. A number of such functionalized asymmetrical dendritic compounds can be used for various therapies, including cancer treatment.

The invention discloses a dendritic fluorescent chemical sensor, and its preparation method and application, and also discloses a method for identifying and detecting Pd <2+> through the dendritic fluorescent chemical sensor. The invention belongs to the field of organic synthesis and analytical chemistry. The dendritic fluorescent chemical sensor is characterized in that rhodamine B hydrazide as a fluorescent active site is introduced into a dendritic compound to form a novel compound, wherein a structural formula of the novel compound is shown in the patent specification. The preparation method of the dendritic fluorescent chemical sensor comprises the following steps of in an argon atmosphere, putting an aldehyde compound with a quadrilateral molecular configuration into a reactor, adding ethanol into the aldehyde compound to make the compound dissolve, adding dropwisely rhodamine B hydrazide-ethanol solution into the aldehyde compound-ethanol solution with stirring under a constant pressure, wherein a mol ratio of the added aldehyde compound to the added rhodamine B hydrazide is 1: (4.2 to 4.5), when a adding process of the rhodamine B hydrazide-ethanol solution is finished, adding 1.0 to 2.0% by volume of glacial acetic acid into the mixed solution in the reactor, stirring well, carrying out a reflux reaction at a temperature of 100 DEG C for 18 to 22 hours, evaporating the resulting products to remove a solvent and collect residue, washing the residue 3 to 5 times by ethanol, and drying in a vacuum to obtain a dendritic fluorescent chemical sensor product which is a pale pink solid. The dendritic fluorescent chemical sensor prepared by the preparation method has four fluorescent active groups thus a sensing speed and a sensing sensitivity of the dendritic fluorescent chemical sensor is 4 times as high as a sensing speed and a sensing sensitivity of a small molecule. The dendritic fluorescent chemical sensor does not contain toxic solvents.

The invention relates to a dendrimer containing porphyrin or chlorine and a pharmaceutically acceptable salt thereof shown in a general formula (I) or a general formula (II), wherein, A1 expresses ( in the instruction), or A1 (expresses in the instruction), the precondition that A2 which connects with A1 is meaningless, A2 expresses (in the instruction),and the invention also relates to a pharmaceutical composition with the inhibition effect to animal transplant tumors such as mice sarcoma 180 and the like, wherein, the effective curative dose of active components of the dendrimer containing porphyrin or chlorine and a pharmaceutical acceptable carrier are contained, and the invention also doscloses an application of an pharmaceutical composition containing the said active components in preparation of a medicinal preparation for improving and treating malignant tumor.

The invention relates to an improvement in a vacuum distillation method used for purification and separation in the preparation process of a polyamide-amine (PAMAM) dendritic compound. A separation method of the polyamide-amine dendritic compound is characterized in that as for vacuum distillation taking ethidenediamine (EDA) and methyl acrylate (MA) as reaction raw materials, and methanol as a reaction solvent in the PAMAM preparation process, after the Michael addition excess reaction and amidation excess reaction are finished, a secondary vacuum distillation process is respectively implemented according to different temperatures and vacuum degrees, and 1-3 solvent extraction operations are added in each stage; the separation of a target product from an excess reactant is enhanced through solvent extraction, so that the separation time is shortened. The separation method of the polyamide-amine dendritic compound, provided by the invention, has the beneficial effects that operation procedures and operating parameters for the vacuum distillation reasonably utilize the demands of the distillation temperatures, the vacuum degrees and methanol as the reaction solvent at different stages of vacuum distillation and purification of PAMAM reaction material liquid, the residual amount of reaction materials in the target PAMAM product is reduced, and particularly, the effect is more obvious along with the increase of PAMAM algebras.

The invention belongs to the field of solar battery technique, especially relating to a full solid electrolyte sensitizing dyestuff nano-crystalline solar battery which is filled by dendritic compound and its preparing method. Wherein, the full solid electrolyte is assembled on the surface of wide forbidden band semi-conductor nanometer crystal film, which has adsorbed the sensitizing dyestuff, to replace the liquid electrolyte. Since the electrolyte uses dendritic compound as filled composite, the leakage and volatilization of solvent is solved to prolong the service life of solar battery.

The invention discloses a dendritic tryptophan compound, a preparation method of the dendritic tryptophan compound and application of the dendritic tryptophan compound serving as a virus invasion inhibitor, and belongs to the technical field of dendritic polymer synthesis. According to the technical scheme, the preparation method comprises the following steps: adding a carboxyl-terminated polyamide-amine dendritic compound and alkyl esterified tryptophan into a hydrochloric acid and N, N-dimethylformamide solution, and reacting at 20-60 DEG C for 3-10 days to obtain a compound containing tryptophan groups at the tail end; and carrying out rotary evaporation drying, washing and drying on the compound containing the tryptophan group at the tail end, and carrying out high performance liquid chromatography purification on an obtained residue to obtain a preliminarily purified compound containing the tryptophan group at the tail end. The compound is applied to the aspect of virus invasion inhibitors, can solve the problems of the existing virus invasion inhibitors, and has the characteristics of simple preparation method, good antiviral effect and wide antiviral property.

The invention discloses a dendritic fluorescein sodium-iodonium salt visible light initiator and a preparation method and application thereof. By combination of chromophore fluorescein sodium and iodonium salt, an electron transfer type visible light initiator system is obtained; by introduction of the electron transfer type visible light initiator system into a dendritic compound, visible light initiating efficiency is remarkably improved. The light initiator has advantages of environmental friendliness, high compatibility, low energy consumption and the like and used for initiating unsaturated resin curing. A macromolecular light initiator is achieved, and by application of specific dendritic fluorescein sodium-iodonium salt to unsaturated resin curing-polymerization, appearance, hardness, glossiness and flexibility of obtained coatings are all excellent.

The invention discloses a perfluoropolyether silane dendritic compound which has a chemical formula as shown in the description, wherein Y is as shown in the description or CpF2p+1<->, PFPE representsa perfluoropolyether group, R is a bridging group, X is a hydrolyzable group, and the subscripts n, m and p in the formula are natural numbers of being greater than or equal to 1. The compound has excellent hydrophobic and oleophobic characteristics of the perfluoropolyether and also has the characteristic of high adhesive force of the silane dendritic compound on a glass panel. Therefore, a filmobtained by coating a surface treatment composition containing the perfluoropolyether silane dendritic compound can prevent the surface of the glass panel from being contaminated by external pollutants and user's fingerprints and can also be firmly attached onto the glass panel. Compared with the existing perfluoropolyether film, the film obtained by coating a surface treatment composition containing the perfluoropolyether silane dendritic compound is difficultly stripped from the surface of the glass panel and has longer service life.

The invention provides a green photoresist material, an LCD panel and a preparation method of the green photoresist material. The green photoresist material is a phthalocyanine molecule, and one substituent group of the phthalocyanine molecule is a dendritic compound; the steric hindrance of substituent groups of the dendritic compound is large, so accumulation and aggregation of phthalocyanine molecules due to strong pi-pi acting force can be hindered; the substituent group of the dendritic compound is amphiphilic, so that the solubility of the phthalocyanine molecule is improved, and the problem that athe photoresist material is prone to remaining during development is solved; and the single-molecular-state and high-solubility phthalocyanine molecule can avoid stray light introduced by the light scattering problem, so the penetration and contrast of color resistance are greatly improved. The green photoresist material has the characteristics of high solubility, high penetration, goodthermal stability and self-development, and can be applied to the LCD panel to improve the brightness and contrast of the display panel and relieve the problems of insufficient brightness and contrast of the existing LCD panels.

The invention provides a green color resistance material, a liquid crystal display panel and a preparation method of the green color resistance material, wherein the green color resistance material comprises phthalocyanine molecules, and at least one substituent group of the phthalocyanine molecules is a dendritic compound substituent group. By forming a dendritic compound substituent group, steric hindrance which is large enough is generated between adjacent phthalocyanine molecules to hinder aggregation between the molecules, so that the green color resistance material is in a monomolecularstate, the scattering effect of the green color resistance material is reduced, and the light penetrating power is improved.

The invention discloses preparation and application of a novel dendritic polymer. A dendritic compound is a dendritic high-polymer compound with a novel structure. The invention discloses a preparation method and an application of the novel dendritic polymer. The dendritic polymer with the novel structure has the effects and the capacities of non-in-vitro fertilization for people or animals, and regulation and control of birth offspring gender in a normal birth process of people or animals.

The invention discloses a dendritic eosin B-iodonium salt visible light initiator as well as a preparation method and application thereof. In the present invention, the chromophore eosin B is combined with iodonium salt to obtain an electron transfer type visible light-sensitive triggering system, which is introduced into the dendritic compound, which greatly improves the visible light triggering efficiency, and is environmentally friendly and compatible Good performance and low energy consumption. As a visible light initiator, it is used to initiate the curing of unsaturated resins. The present invention realizes a macromolecular visible light initiator, uses specific dendritic eosin B-iodonium salt for unsaturated resin curing, and obtains a coating film with excellent appearance, hardness, gloss and flexibility.

The invention discloses a health-care odor-resistant ceramic tile and a preparation method thereof, and relates to the technical field of ceramic tiles. The preparation method comprises the following steps: firstly, pre-treating a ceramic tile green body to enhance the surface adhesiveness; then, silver nitrate is used as an external phase solution, the polystyrene microspheres are used as an internal phase solution for spinning, and a porous hollow-structure nano-film is formed under high-temperature calcination; the preparation method comprises the following steps: preparing a zinc-copper source mixed solution, forming a nano-zinc oxide seed crystal layer by pulse laser deposition, continuously growing in the zinc-copper source mixed solution to form a deodorization layer, generate an electron transfer chain, generate active oxygen, suffocate bacteria and stop metabolism of the bacteria, and sequentially coating an enamel layer and a modified resin layer, the hydrophobic dendritic compound is prepared from 2, 7-dyhydroxyl-4-hetero-heptylamine, epoxy resin, 2, 6-dyhydroxyl-5-chloro-4-pyrimidinecarboxylic acid methyl ester and perfluoroalkyl ethyl bromide, and the hydrophobic dendritic compound is formed. The health-care odor-resistant ceramic tile prepared by the invention has odor-resistant and anti-pollution effects.

The present invention relates to a kind of carbazole diarylamine dendritic compound and its preparation method and application, the preparation method of described carbazole diarylamine dendritic compound comprises halogenated 9,9'-spirobifluorene, catalyst, The carbazole diarylamine compound is mixed with an organic base, and xylene is used as a solvent, reacted under the protection of an inert gas, recrystallized and purified, and a carbazole diarylamine dendritic compound shown in the following formula is obtained. The carbazole diarylamine dendritic compound prepared by the present invention has a simple process and a refining method, is very suitable for industrial production, has good thermal stability and morphological stability, and is used as a hole transport material for a perovskite solar cell. It has high photoelectric conversion efficiency.

The invention relates to dendritic compounds, the use of these compounds as pharmaceuticals, pharmaceutical compositions containing the compounds, processes for preparing the compounds, and methods of treating diseases or conditions in which it is desirable to inhibit β-secretase.