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263 results about "Diimide" patented technology

Diimide, also called diazene or diimine, is a compound having the formula (NH)₂. It exists as two geometric isomers, E (trans) and Z (cis). The term diazene is more common for organic derivatives of diimide. Thus, azobenzene is an example of an organic diazene.

Preparation method of molecularly imprinted polymeric microspheres for 2,4,6-trinitrophenol detection

The invention discloses a preparation method of molecularly imprinted polymeric microspheres for 2,4,6-trinitrophenol detection. The preparation method is characterized in that polynitrophenol derivatives-imprinted molecules generated through reaction between 2,4,6-trinitrophenol and N,N'-diisopropyl carbodiimide have luminous yellow fluorescent light, the fluorescent light of the imprinted molecules has open and close characteristics under an acid-base condition, the imprinted molecules located in an imprinting layer of the molecularly imprinted polymeric microspheres can be eluted, a hole structure which is complementary with the structure, the size and the functional groups of the imprinted molecules is formed in the imprinting layer, polymeric microspheres of which the imprinted molecules are eluted have specific recognition sites on target analyte molecules, target molecules enter the specific recognition sites, selective recognition on the target analyte molecules is realized, sensitivity detection of the target analyte molecules can be realized through opening and closing of the fluorescent light of the target molecules, the specific surface area of the molecularly imprintedmicrospheres is large, and space in which the recognition sites are formed is stable in structure, has more effective sites, and is capable of carrying out high-selective recognition and high-sensitive detection on the target molecules.
Owner:霍尔姆斯(北京)生物科技有限公司

Five-membered heterocyclic derivative-bridged perylene diimide dipolymer and its preparation method and use in organic photovoltaic device

The invention provides a 1,1'-dialkoxy-substituted asymmetrical perylene diimide dipolymer having a novel structure, and the perylene diimide dipolymer is an electron acceptor-type organic micromolecule having solution processibility. The invention also provides a method for synthesis of the asymmetrical substituted perylene diimide dipolymer. The asymmetrical substituted perylene diimide dipolymer as a receptor and P3HT isoelectronic donor-type polymer are combined to form an organic solar cell so that high photoelectric conversion efficiency is obtained. The asymmetrical substituted perylene diimide dipolymer provides a novel direction for photovoltaic field research.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Bis(1,3-dithiol-2-carbonyl) fused naphthyl imide derivative and synthesis method thereof

The invention relates to a bis(1,3-dithiol-2-carbonyl) fused naphthyl imide derivative and a synthesis method thereof, in particular to a method for synthesizing a bis(1,3-dithiol-2-carbonyl) fused naphthyl imide intermediate by performing nucleophilic substitution on halogenated naphthyl imide and carrying out imine hydrolysis under the circumstance that 2,3,6,7-naphthyl imide is taken as a raw material and N-methyl imine dithiocarbonic acid alkali metal salt as a sulfurizing agent. The bis(1,3-dithiol-2-carbonyl) fused naphthyl imide derivative is a kind of an important organic photoelectric material intermediate; according to the synthesis method of the bis(1,3-dithiol-2-carbonyl) fused naphthyl imide derivative, transition metal catalysis, high temperature, water absence, oxygen absence and other severe conditions required for the conventional sulfur atom introduction method are avoided; not only is an intermediate which is simple in structure and easy to derive provided, but also a novel method for conveniently synthesizing bis(1,3-dithiol-2-carbonyl) fused naphthyl imide in a relatively large scale is provided.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Synthetic method of succinimide type trifluoromethyl sulfuration reagent

The invention belongs to the technical field of synthesis of organic compounds, and relates to a synthesis method of a succinimide type trifluoromethyl sulfide reagent. The CAS number of the reagent is 183267-04-1, and the structural formula of the reagent is shown in a formula (1) as described in the specification. According to the synthetic method of the succinimide type trifluoromethyl sulfide reagent, a nitrogen halogenated compound containing a succinimide structural framework, trifluoromethanesulfonate, nonafluorobutyl sulfonate, methanesulfonate and p-toluenesulfonate are used as reaction substrates and trifluoromethylthioester is used as a trifluoromethylthio source, for synthesis of the trifluoromethyl sulfuration reagent. According to the method, trifluoromethylthioester is taken as the trifluoromethylthio source, generates trifluoromethylthio negative ions under activation of fluorine negative ions, and conducts nucleophilic substitution on a reaction substrate, so the construction of a nitrogen-sulfur bond is realized, and the trifluoromethyl sulfuration reagent is obtained after separation and purification. According to the synthesis method of the trifluoromethyl sulfuration reagent, the raw materials are easy to prepare, the reaction reagent is low in price, the synthesis cost of the trifluoromethyl sulfuration reagent is remarkably reduced, and industrial production is facilitated; synthesis conditions are mild, and operation is simple and safe; and transition metal elements are not needed, and the method is green and environment-friendly.
Owner:SHANDONG LINGHAI BIOTECHNOLOGY CO LTD

Ptycene-perylene diimide derivative, synthesis method thereof and sensing application to gas-phase volatile aromatic hydrocarbon

The invention discloses a ptycene-perylene diimide derivative, a synthesis method thereof and sensing application to gas-phase volatile aromatic hydrocarbon. The ptycene-perylene diimide derivative has a special non-planar structure, so that a prepared sensing film has large specific surface area and porosity, and is rich in molecular channels, and good diffusion of molecules of an object to be detected in the film can be ensured; and meanwhile, by utilizing a capillary condensation phenomenon and the sensitive effect of fluorescent molecules on a surrounding environment in a high-excitation state, high sensitivity and high selectivity response to BTEX gas are realized, the response time and the recovery time are short, and a new thought is provided for gas-phase sensing of volatile organic compounds lacking photoelectric activity and preparation of a fluorescent sensing film with excellent performance. The preparation method is simple and convenient to operate and mild in reaction condition, the photochemistry stability and thermodynamic stability of a prepared fluorescent compound are good, and the obtained fluorescent sensing film is high in sensitivity, good in selectivity andlong in service life, and is an excellent fluorescent sensing film.
Owner:SHAANXI NORMAL UNIV

Diazene directed modular synthesis of compounds with quaternary carbon centers

Diazene-directed modular synthesis is described for the preparation Csp2-Csp3 and Csp3-Csp3 linkages where one or more stereogenic quaternary carbon centers are formed. The disclosed methods are directed to the preparation of compounds of Formula (I), or a pharmaceutically acceptable salt, tautomer or stereoisomer thereof, from compounds of Formula (II):wherein R1-R5 and q are as defined independently for each occurrence herein. A wide variety of compounds can be accessed in this manner, including oligocyclotryptamines, where the stereochemistry of each subunit is beneficially secured before fragment coupling.
Owner:MASSACHUSETTS INST OF TECH

Non-glutaraldehyde pre-installable dry biological valve material and preparation method and application thereof

The present invention discloses a non-glutaraldehyde pre-installable dry biological valve material and a preparation method and an application thereof, and belongs to the technical field of medical materials. The preparation method comprises the following specific steps: a, decellularizing a pig or bovine pericardium material; b, soaking the decellularized pericardium in a glycidyl methacrylate oracrylic anhydride solution to introduce a carbon-carbon double bond structure; c, soaking the material in an aqueous solution of propyl methacrylate 3-sulfonate; d, adding an initiator for double bond polymerization cross-linking; e, using a mixed solution of carbodiimide and N-hydroxysuccinimide for cross-linking fixation; f, soaking the material in a polyphenol solution; and g, conducting storage with a micro-organism-inhibiting solution after rinsing or with an alcohol solution after dehydration drying. The preparation method can avoid problems of glutaraldehyde aldehyde group residues, easy calcification, and inability to protect elastin, at the same time, can effectively solve a problem that the dry valve material cannot be quickly flattened after being pressed and held, and potentially extends service life.
Owner:VENUS MEDTECH (HANGZHOU) INC

Method for preparing flower-like nano cadmium sulfide by using perylene bisimide derivatives as template

The invention relates to a method for preparing flower-like nano cadmium sulfide by using perylene bisimide derivatives as a template. By controlling different reaction time lengths between the system and the H2S gas, a Langmuir film formed by two amphiphilic perylene diimide compounds (PDI-1 and PDI-2) in novel structures on a CdCl2 subphase surface is used as a template for the first time to successfully prepare CdS nanoparticles with different flower-like shapes, of which the particle sizes are respectively 20nm, 30nm, 40nm, 60nm and 80nm. Various means are utilized to comprehensively characterize the microstructure and shape. The method is simple to operate, and the reaction process is easy to control and is carried out in a water phase at room temperature; and thus, the invention has the advantages of mild preparation conditions and low cost, and is easy to implement.
Owner:UNIV OF JINAN
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