233 results about "Diacetylene" patented technology

The present invention provides amphiphilic diacetylene compounds, and compositions and self-assembled nanotubes containing the same. Also provided are methods of producing the compounds, compositions, and nanotubes of the invention, and methods of destroying or inhibiting the growth or proliferation of microorganisms using the nanotubes of the present invention.

Described is a self-indicating instant radiation dosimeter (1001) for monitoring high energy radiations, such as X-ray. The dosimeter contains a radiation sensitive, color changing, indicating composition (10), e.g., a diacetylene (R—C≡C—C≡C—R′, where R and R′ are substituents groups) or a radiochromic dye, a polymeric binder (20) and optionally a shelf life extender (50) or an activator (40). The radiation sensitive composition (10) changes color instantly when exposed to high energy radiation. The dose is estimated by comparing the color with a color reference chart or more accurately with a spectrophotometer or an optical densitometer. The radiation sensitive composition (10) is protected from low energy radiation such as UV light, by a layer of low energy absorbing materials, such as UV absorbers.

A freeze indicator, which is preferably a self-activating freeze indicator. The freeze indicator has a substrate with a freeze indicator composition coated thereon wherein the freeze indicator has a liquid diacetylene; and a catalyst or catalyst precursor and a protective cover.

The present invention provides for self-assembling peptide amphiphiles that are capable of forming nanofibers. In particular, the present invention provides for diacetylene peptide amphiphiles that find use as scaffolds for tissue growth or for drug delivery.

The present invention relates to thermoplastic material comprising polymer and at least one polychromic substance, wherein the polychromic substance is a functionalised diacetylene having the formula which has the general structure:X—C≡C—C≡C—Y—(CO)n-QZwherein X is H or alkyl, Y is a divalent alkylene group, Q is O, S or NR, R is H or alkyl, and Z is alkyl, and n is 0 or 1.The present invention further relates to a method of processing thermoplastic material to form a plastic article, wherein the method comprises the step of processing the thermoplastic material at a temperature greater than the melt temperature of the thermoplastic, wherein the thermoplastic material comprises polymer and at least one polychromic substance as defined above; and further comprising the step of irradiating the plastic article to colour at least a region of the plastic article.

A diacetylene-based branched (co)polymer of the general formula (I): where R1 and R2 represent any organic group and R3, R4, and R5 represent either protons from unreacted acetylene moieties or other organic groups from end-capping and / or functionalization agents, with m≧0 and n≧1, which is processable, exhibit photo- and electroluminescence, show high photo refractivity, is thermal and irradiative curable to heat and solvent resistant materials. The present invention can be blend with a variety of macromolecules for general use. The polymer can be metallified by reacting with organometallic complexes and ceramization of the obtained organic-inorganic hybrids afford ferromagnetic materials with high magnetizability.

This invention relates to a mixture of imageable polyacetylenic compounds which have similar photosensitivities and which are visually imageable in complementary colors combinable to provide a black image, which mixture contains at least one polyacetylenic metal salt which produces a color, preferably a metal salt of a diacetylene C.sub.6 to C.sub.48 mono- or dicarboxylic acid, which is complementary to a color produced by another polyacetylenic metal salt or non-metallic polyacetylenic compound contained in the mixture or in an another integral color forming layer. The invention also pertains to the use of said mixture and the manner of its preparation.

There is provided a polydiacetylene supramolecule comprising diacetylene molecules, capable of immobilizing a receptor molecule having a thiol group. Since the polydiacetylene supramolecule has a receptor immobilized thereon having a thiol group, for example, an antibody, and thus shows color transition when reacting with a sample, an antigen can be detected through specific color transition of the polydiacetylene when employing in a receptor-ligand reaction, for example, an antibody-antigen reaction.

Molecular chemical and / or biological sensors that exhibit a very high density of sensing functionality and which are applicable to a wide variety of different analytes, and enable rapid, convenient and economical detection of analytes are prepared by reacting a dendritic polymer with a diacetylene reagent wherein the diacetylene functional groups are subsequently intramolecularly polymerized to form segments having alternating conjugated double and triple bonds. Sensory groups that can bind with an analyte are bonded to the acetylene monomer units to form molecular sensors that produce observable and measurable color changes when an analyte binds with the sensory groups.

The invention relates to a time-temperature color-changing indicator and application and a using method thereof, belonging to the technical fields of monitoring of vaccine and medicament storage. The time-temperature color-changing indicator comprises a polydiacetylene (PDA) vesicle and an amphiphilic polymer aqueous solution, wherein the PDA vesicle is formed by polymerizing a diacetylene substance shown as a formula I after self-assembly, and is shown as a formula II; and in the formula II, R refers to a hydrophilic group, and R' refers to a chain segment of a hydrophobic group. The time-temperature color-changing indicator is used for monitoring temperature change and time change within the temperature range of 0-50 DEG C, such as time and temperature changes and the like during monitoring of vaccine and bio-medicament transportation. The time-temperature color-changing indicator is convenient to use, is simple and effective, and is an indicator with practical application prospect.

The process of the invention comprises contacting a hydrocarbon stream, comprising light olefins plus impurities such as acetylenes, in the absence of hydrogen with a supported copper catalyst, preferably CuO / alumina. The acetylene component undergoes a coupling reaction producing a diacetylene which can be more readily removed. Thus, the methylacetylene (MA) contaminant in liquid propylene yields at about 80° C. and 3792 kPa (550 psig) a significant amount dimethyl diacetylene (2,4-hexadiyne). Surprisingly, very little cyclization products are present. The process is useful for purification of olefin feeds. It can be used alone or in combination with known purification methods such as catalytic distillation or selective hydrogenation.

The invention relates to a siliceous aromatic ether and aryne polymer and a preparation method thereof. The polymer is structurally characterized by comprising silicon atoms, aryne groups and an aromatic ether structure on a main chain. The siliceous aromatic ether and aryne polymer is polymerized from diacetylene-benzene or a dyhydroxy aromatic compound and dichlorosilane by Grignard reaction under an inert atmosphere. The preparation method of the polymer comprises the following steps of: firstly reacting haloalkane with magnesium powder to produce an alkyl magnesium halide Grignard reagent; and then reacting with the dyhydroxy aromatic compound to obtain an alkyl magnesium halide Grignard reagent of the dyhydroxy aromatic compound or reacting with diacetylene-benzene to obtain an alkyl magnesium halide Grignard reagent of diacetylene-benzene; and finally reacting with dichlorosilane to obtain the siliceous aromatic ether and aryne polymer. The invention has the advantages of simple process, short reaction time, easily controlled process condition and simple subsequent processing and is convenient to operate; in addition. The product of the method is stable at room temperature and easy to store, the condensate of the polymer has excellent heat-resisting stability and mechanical property and is a high-performance thermosetting resin with good heat-resisting property.

A method for producing a colour filter, comprising: applying to a substrate at least one diacetylene capable of undergoing a light-activated colour change reaction, and exposing the substrate to light thereby causing the exposed regions of the substrate to change colour. The invention also provides devices comprising coloured filters such as liquid crystal displays.

The invention belongs to the technical field of organic synthesis midbody, medicine, pesticide and liquid crystal materials, in particular to a preparation method of 1,4-diaryl-1,3-butadiyne. In the invention, the easily obtained beta, beta-dibromo arylethylene is served as a raw material, under the catalytic action of cuprous iodide, no ligand is added to the raw material and the 1,4-diaryl-1,3-butadiyne compound is efficiently synthesized in dimethylsulfoxide solvent in the presence of 1,8-dual nitrogen heterocyclic ring hendecene. The 1,4-diaryl-1,3-butadiyne synthesized by the invention can be served as the synthesis midbody of the medicine, the pesticide and the liquid crystal. Compared with the existing synthesis method of noble metal palladium, the method of the invention has the characteristics of easily obtained raw materials, low cost, simple operation, and mild reaction conditions, is easy to be industrialized, and has wide application prospect.

The invention relates to the technology of phosphorescence chemical probe, in particular to a water-soluble cationic iridium complex phosphorescence probe and a preparation method. Iridium metal is not used for cell marking in the prior art. The structural formula of the water-soluble cationic iridium complex phosphorescence probe of the invention is as shown in the attached figure. The preparation of the invention is as follows: preparing 2-phenylpyridine iridium dichlorendic complex Ir2 (ppy) 4Cl2; preparing 3, 8-diacetylene o-phenanthroline; preparing 3, 8-diacetylene o-phenanthroline iridium 2-phenylpyridine complex; and preparing the objective complex. The invention has the advantages that with good water solubility and lipid solubility, the complex can quickly enter cells; and with long luminescent lifetime of iridium complex, the interference of the background fluorescence can be effectively eliminated through the time-resolved fluorescence technique, and thereby improving the detection sensitivity can be improved.

Colorimetric sensors comprising a receptor incorporated within polydiacetylene assemblies to form a transducer capable of indicating a color change when contacted with an analyte are disclosed. Methods of using the colorimetric sensor and a kit for the colorimetric detection of an analyte are also disclosed.

The invention relates to a silica aryne resin containing carborane unit in main chain framework and a preparation method thereof. The method comprises the following steps: preparing a silica aryne resin from diacetylene-benzene and dihalogenated siloxane by an alkynyl Grignard reagent process, and reacting decaborane with the silica aryne resin under the action of a Lewis base to prepare the silica aryne resin containing carborane unit in main chain framework. The silica aryne resin containing carborane unit in main chain framework is soluble in common organic solvents, and has excellent workability; the resin solidified substance has excellent heat resistance and thermal oxygen stability; and the fiber-reinforced composite material has excellent mechanical properties, and has wide application prospects in the fields of aerospace and the like.

The invention relates to a catalytic system for preparing 1,3-diacetylene. According to the catalytic system, cupric chloride, air and 8-hydroxyquinoline are respectively used as a catalyst, an oxidizing agent and an auxiliary ligand, the reaction temperature is only 100 DEG C, and only a catalytic amount of inorganic base is adopted.

Described is a self-indicating instant radiation dosimeter (1001) for monitoring high energy radiations, such as X-ray. The dosimeter contains a radiation sensitive, color changing, indicating composition (10), e.g., a diacetylene (R—C≡C—C≡C—R′, where R and R′ are substituents groups) or a radiochromic dye, a polymeric binder (20) and optionally a shelf life extender (50) or an activator (40). The radiation sensitive composition (10) changes color instantly when exposed to high energy radiation. The dose is estimated by comparing the color with a color reference chart or more accurately with a spectrophotometer or an optical densitometer. The radiation sensitive composition (10) is protected from low energy radiation such as UV light, by a layer of low energy absorbing materials, such as UV absorbers.

The invention discloses a conjugated polymer containing aromatic radical diacetylene and the synthesis method thereof. The constitutional formula of the polymer is (I)formula, wherein, R1 is aryl of carbazole, fluorine, triphenylamine and nitrogen heterocyclic ring, R2 is aryl of benzene, thiophene, biphenyl and carbazole, X is between 2 and 300, and Y is between 4 and 500; formula (II) is diacetylene structure. When in preparation, monomer synthesis is firstly done, and then polymer synthesis is done; the monomer is firstly dissolved in dichloro benzene and is stirred for 15 minutes at the temperature between room temperature and 60 DEG C until the monomer is fully dissolved, then the solvent is transferred to a catalytic system containing cuprous chloride and TMEDA for reaction for 20 to 60 minutes, and after the reaction solution is precipitated, filtered, washed with methanol and vacuum-dried, the conjugated polymer containing aromatic radical diacetylene is obtained. The polymer synthesized by the invention has comparatively high yield and molecular weight, good thermal stability and electroluminescent or photoluminescent properties.

Solid-state colorimetric biosensors having sensory groups and interdendritic cross-linking segments of alternating conjugated double and triple bonds are prepared by intermolecular polymerization of diacetylene-functionalized dendritic polymer precursors. The polymerization process may be used to form solid films that are capable of indicating the presence of an analyte by a detectable change in color. The disclosed solid-state calorimetric biosensors may exhibit excellent stability at elevated temperatures and in the presence of organic solvents, and due to the dendritic architecture and high density of sensing functionality achieve high sensitivity to analytes.

The invention provides a formaldehyde filter screen composite material for an air purifier and a preparation method thereof. The method comprises the steps of: mixing a solvent with a crosslinking agent, stirring, adding poly-1,4-diphenyl diacetylene and mesoporous titanium dioxide nanoparticles; stirring to obtain a first mixed liquor; adding activated carbon fiber to the first mixed liquor for crosslinking reaction; and drying to obtain the formaldehyde filter screen composite material for the air purifier. The invention uses activated carbon fiber as the matrix material with large specific surface area and high adsorption activity to ensure great adsorption capacity of the composite material. The screened mesoporous titanium dioxide nanoparticles with high UV response and poly-1,4-diphenyl diacetylene with visible light response are compounded to greatly improve the photocatalytic reactivity of the composite material, and improve the degradation rate of formaldehyde by the composite material. The experimental results show that the formaldehyde filter screen composite material for air purifier prepared by the invention has high adsorption capacity and catalytic degradation capabilities.

The invention discloses an elastic hydrophobic organic conjugated polymer, a synthesizing method thereof and an application thereof to removing of organic matters from water. The synthesizing method comprises the following steps of: connecting a benzene ring with an acetylene bond; particularly adding a catalyst, a nonpolar solvent and the like into 1.4-diacetylene-benzene and a 1,3,5-tribromobenzene derivative or a 1,3,5-triiodo benzene derivative serving as substrates in an inert atmosphere; undergoing a polymerization reaction; and filtering, washing, drying and the like to obtain a product. The product is centimeter grade or millimeter grade elastic particles containing a plenty of mesopores and gaps, so that material density is very low; and meanwhile, the copolymer has high elasticity and high hydrophobic property. When adsorption of liquid organic matters is saturated in the polymer, the polymer is taken out of an aqueous solution, organic matters are removed through mechanicalextrusion, and polymer particles can be used repeatedly, so that the cost on removal of the organic matters from water is lowered. The elastic hydrophobic organic conjugated polymer is suitable for batch production and environmental protection.

Described is a self-indicating instant radiation dosimeter (1001) for monitoring high energy radiations, such as X-ray. The dosimeter contains a radiation sensitive, color changing, indicating composition (10), e.g., a diacetylene (R—C≡C—C≡C—R′, where R and R′ are substituents groups) or a radiochromic dye, a polymeric binder (20) and optionally a shelf life extender (50) or an activator (40). The radiation sensitive composition (10) changes color instantly when exposed to high energy radiation. The dose is estimated by comparing the color with a color reference chart or more accurately with a spectrophotometer or an optical densitometer. The radiation sensitive composition (10) is protected from low energy radiation such as UV light, by a layer of low energy absorbing materials, such as UV absorbers.

A data storage medium comprising recording information in the form of a track of data points, the colour of each data point being selected from at least three different colours, wherein the recording information is disposed on a substrate which comprises a colour forming composition, wherein said colour forming comprises a colour former which is susceptible to changing to at least three different colours when irradiated with a laser, wherein the colour former is a leuco dye, a diacetylene or a carbazole. Methods of forming the data storage medium and methods of reading the medium are also provided.

The invention belongs to the technical field of radiation dose monitoring, and discloses a preparation method of a self-color-developing dosemeter for individual dose monitoring. The preparation method of the self-color-developing dosemeter for individual dose monitoring comprises the steps of (1) using a diluent to completely dissolve a base material, (2) using a diluent to completely dissolve a chromotropic dye, and carrying out filtration, (3) mixing solutions obtained through the step (1) and the step (2), and evenly stirring, and (4) using a tape casting method to manufacture film, wherein the chromotropic dye is diacetylene-like compounds, and the proportion between the chromotropic dye and the base material is 1:10-2:1. The preparation method of the self-color-developing dosemeter for individual dose monitoring is rapid in response, low in price and convenient to carry, and the detection lower limit of the preparation method of the self-color-developing dosemeter for individual dose monitoring is 0.1Gy.