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 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.

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.

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 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 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 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.

A dendritic compound of the following structure: PDn-Z-L is disclosed. In the structure above, P is X—(CH2CH2—O)r—, r is an integer ranging from 1000 to 4000, X is OH, NH2, or OR, R is C1 to C10alkyl, Dn is a residue of branched C3 to C30 polyol compounds, n is the quantity of layers of the residue of branched compounds and is an integer equal to or greater than 1, L is a metal cation, Z is the residue of a C3 to C30 compound with multi functional groups. The functional groups illustrated above can be carboxylic groups, amino groups, amide groups, or chelating groups. The carboxylic groups, ester groups, amino groups, or amide groups bind to Dn, and the chelating groups bind to the metal cations.

The invention relates to a dendritic compound using 9,9'-spirobifluorene as a kernel and methoxyl group substituted diarylamine as a branch compound, and the application of the dendritic compound in perovskite solar batteries, and belongs to the field of the preparation of solar battery materials. The preparation method comprises the following steps: firstly, reacting 4,4'-dibrom diphenylamine which is protected through tert-butyloxycarbonyl with 4,4'-dimethoxy diphenylamine or 4,4'-N,N'-(4,4'-dimethoxy diphenyl) diphenylamine so as to generate a branch with a protecting group, and then carrying out deprotection under the action of trifluoroacetic acid so as to generate a first-generation branch and a second-generation branch respectively; reacting the first-generation branch or the second-generation branch respectively with the bromo-9,9'-spirobifluorene compound under the action of a palladium catalyst so as to obtain a first-generation 9,9'-spirobifluorene spirofluorene dendritic compound or a second-generation 9,9'-spirobifluorene spirofluorene dendritic compound. The dendritic compound disclosed by the invention has better heat stability and solubility, is used as a hole transport material for the perovskite solar batteries, and has higher photoelectric conversion efficiency.

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 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 ofcobalt 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.

The invention relates to dendritic compounds, the use of these compounds as pharmaceuticals, pharmaceutical and cosmeceutical compositions containing the compounds, and methods of treating cancer, inflammation, diabetic nephropathy, neurodegenerative disorders, Niemann-Pick Type C disease, or dermatological conditions.

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 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.

The invention discloses a method for synthesizing a dendritic compound trifluoroacetate with cage type octa (gamma-aminopropyl) silsesquioxane as a core. The method comprises the steps of: dissolving OAS hydrochloride and DIPEA in DMF, dropwise adding DMF N, N '-bis-(tert-butyloxycarbonyl)-L-lysine N-saccinimidyl or N, N'-bis-(tert-butyloxycarbonyl)-L-lysine pentaflurophenyl soluble in DMF, and reacting for 10-14h; adding acetonitrile of -2-2 DEG C, filtering and drying for 20-24 h to obtain t-butyloxycarboryl protected G1 (OL); adding G1 (OL) to trifluoroacetic acid at -2-2 DEG C, and reacting for 3-5h; adding the reaction mixture into diethyl ether of 2-5 DEG C, mixing, standing, filtering and collecting precipitate to obtain G1 (OL) trifluoroacetate; and adjusting reactant proportion, and repeating the above process to obtain the G4 (OL) trifluoroacetate. The invention has advantages of little pollution, short reaction time, simple post-treatment and high yield.