35 results about "Hexaarylbiimidazole" patented technology

A method for preparation of a lithographic printing plate comprising: exposing a lithographic printing plate precursor comprising a hydrophilic support, a photosensitive layer containing (A) a sensitizing dye having an absorption maximum in a wavelength range of from 350 to 450 nm, (B) a hexaarylbiimidazole compound, (C) a polymerizable compound, (D) a hydrophobic binder polymer and (E) a chain transfer agent and a protective layer in this order, with a laser beam of from 350 to 450 nm; and rubbing a surface of the exposed lithographic printing plate precursor with a rubbing member in a presence of a developer having pH of from 2 to 10 in an automatic processor equipped with the rubbing member to remove the protective layer and an unexposed area of the photosensitive layer.

The invention discloses a UV-LED (ultraviolet-light emitting diode) photocureable coating and a preparation method thereof. The photocureable coating is characterized by consisting of the following components in percentage by mass: 20-30% of high-functionality fatty acid polyurethane acrylate oligomer 6197, 10-20% of two-functionality polyurethane acrylate 6071, 10-20% of TMPTA (trimethylolpropane triacrylate) serving as a three-functionality functional monomer and an active diluent, 0.1-0.3% of foam inhibitor TEGO920, 10-20% of NPGDA (neopentyl glycol diacrylate) serving as a two-functionality functional monomer and an active diluent, 10-20% of HEMA (hydroxyethyl methacrylate) serving as a single-functionality functional monomer and an active diluent, 0.2-0.5% of flatting agent BYK358N, and 5-10% of HABI-L (hexaarylbiimidazole-L) serving as a photo-initiator. The photocureable coating has the advantages of quick curing, energy conservation, environmental friendliness and the like, and the production efficiency of UV-LED photocuring is promoted.

A photosensitive composition comprising: a compound having two or more mercapto groups directly connected to a hetero ring; a hexaarylbiimidazole compound; a sensitizing dye; and a polymerizable compound having an ethylenically unsaturated double bond.

The invention belongs to the technical field of mechanical chemical conduction materials, and particularly relates to a stretching color change polyurethane elastomer material and a preparation methodthereof. The stretching color change polyurethane elastomer material with hexaarylimidazole as a color change unit is prepared from oligomer, namely dihydric alcohol, diisocyanate and hexaarylimidazole molecules as raw materials. The polyurethane elastomer is sensitive to mechanical force response, and the color change degree of the material is in a direct proportion to a stress, that is, the larger the stress is, the more conspicuous the color change is. The polyurethane elastomer material provided by the invention is of a linear structure, the main chain has hexaarylimidazole, the stress can be conducted to the hexaarylimidazole along the main chain when the polyurethane material is strained under the action of the stress, ultimately the C-B band between two imidazole rings of the hexaarylimidazole can be broken, then triphenyl imidazole free radicals of which the color is different from that of the hexaarylimidazole are formed, the stress is vanished, then the polyurethane materialis recovered to an initiator colorless state, and the process is reversible.

Compositions and systems for labeling substrates, such as optical disks, using leuco dye-containing coating compositions are described. The composition can comprise a color forming composition, an electromagnetic radiation absorber, and a stabilizing agent. The color forming composition can include a leuco dye, a hexaarylbiimidazole activator, and an acid-generating source. The absorber can be admixed with or in thermal contact with the color forming composition. The stabilizing agent can be configured for protecting the leuco dye upon exposure to ambient light, wherein the stabilizing agent comprises a diarylguanidine dye salt. The coating composition can be optimized for development using electromagnetic radiation having a frequency from about 760 nm and 800 nm.

High speed violet or ultraviolet laser sensitive lithographic printing plate comprising on a substrate a specific photosensitive composition is described. The photosensitive layer comprises a multifunctional (meth)acrylate monomer, a hexaarylbiimidazole compound, and a sensitizing dye. Combination of both multifunctional urethane (meth)acrylate monomer and multifunctional non-urethane (meth)acrylate monomer can be advantageously used. The plate is imagewise exposed with a violet or ultraviolet laser at a dosage of less than 1000 μJ / cm2, and then developed either off press or on press.

The invention discloses an intelligent gel capable of regulating gel-and-sol transformation by light and application of the intelligent gel. The crosslinked point of the intelligent gel is six-aryl biimidazole, the alkinyl group and nitrine are subjected to click chemical reaction under the catalysis effect of cuprous bromide to form a cross-linked network polymer, the six-aryl biimidazole is successfully introduced into the polymer gel, and the excellent switching performance of small molecules is kept. Under the stimulation of visible light, the intelligent gel can be transformed from the solid gel state to the flowable 'liquid' gel state, and after being cut in the dry gel state, the gel has self repairing capacity. The prepared intelligent gel can be used as drug delivery carriers, self repairing materials, light valves of sensors and the like due to unique light-controlled dynamic intersection points and has potential application in biochemistry, medicines, chemical machinery, artificial intelligence and other fields.

Disclosed is a curable composition comprising (A) a coloring agent, (B) an alkali-soluble resin, (C) a photopolymerizable compound, (D) a hexaarylbiimidazole-type polymerization initiator, (E) at least one component selected from an oxime-type initiator and a triazine-type initiator, and (F) a multifunctional epoxy compound having a functionality of 4 or more, wherein the content of the multifunctional epoxy compound (F) and the content of the coloring agent (A) are 2 to 20% by mass and 25 to 50% by mass, respectively, relative to the total solid content.

The invention provides a coloring photosensitive composition for a color filter, the color filter, a manufacturing method thereof and a liquid crystal display device. The composition can obtain sufficient deep solidifying property on exposure for forming a coloring pattern with excellent development solubility, development latitude and pattern forming property, and realizing high contrast. The composition includes (A) a thiol compound represented by the formula (I), (B) a six-aryl-link imidazole compound, (C) a polymerism compound with alkenes unsaturated double bonds compound, (D) a dye and (E) a dye dispersant. In formula (I), A is a heterocyclic with a group that is represented by any of formula (a)-(c). In formula (a)-(c), L<1>, L<2>, L<3> represent single bond, oxygen atom, sulfur atom, -N(R<12>)-, phenylene, or linkage group combined with more than two groups independently; R<1>-R<12> represent hydrogen atom or organic group with one valence independently.

The invention discloses a polyurethane elastomer material and a preparation method thereof. By taking hexaarylbiimidazole (HABI) photochromic molecules and polyhydric alcohol as cross-linking agents of an elastomer material, the polyurethane elastomer material with a double-cross-linking network structure is constructed, and an intelligent deformation polyurethane material having rapid response toultraviolet light is correspondingly obtained and has a self-healing function. A polyurethane elastomer has good mechanical and physical properties of tenacity, ductility, fatigue resistance and thelike, is taken as an intelligent material and has potential application markets in drivers, software robots, artificial biological organs, sensors, manufacturing industry, medical treatment, wearableequipment, medical treatment instructions and the like.

The present invention provides a novel hexaarylbiimidazole compound of the following formula (1): wherein each R1 represents a halogen, and each R2 represents an optionally substituted C1-4 alkyl group. The hexaarylbiimidazole compound of the present invention is useful as photoradical generators in photopolymerizable compositions used as resists and is characterized by low sublimating thermal decomposition products. The photopolymerizable compositions may be suitably used as resists or as color filters for color liquid crystal display elements, cameras and the like.

The invention belongs to the field of photosensitive polymer materials, in particular relates to a squaric acid dye (I) hexaarylbiimidazole (II) complex as a novel composite initiator for visible photosensitive polymerization and applications thereof. The complex is formed by electrostatic interaction and dipolar interaction of the squaric acid dye (I) and the hexaarylbiimidazole (II) in a solventunder the condition that the weight of the hexaarylbiimidazole is 1-10 times of the weight of the squaric acid dye. The squaric acid dye / hexaarylbiimidazole complex can be used as an initiator of visible light polymerization for vinyl monomers, or can be used as an initiator of visible light curing for light-curing coating materials, photoetching materials, light imaging materials, hologram recording materials, optical materials and three-dimensional molding materials.

Disclosed is a radiation-sensitive resin composition for spacers, which has high sensitivity and excellent storage stability. Also disclosed are a spacer formed by using such a radiation-sensitive resin composition, a method for forming such a spacer, and a liquid crystal display device comprising such a spacer. Specifically disclosed is a radiation-sensitive resin composition for forming spacers, which contains (A) a resin having, in a side chain, a branched structure and / or an alicyclic structure, an acidic group, and an ethylenically unsaturated group bonded to the main chain through an ester group, (B) a polymerizable unsaturated compound, and (C) a hexaarylbiimidazole compound (C1), an aromatic mercapto compound (C2) and an assistant (C3).

This invention provides a photosensitive resin composition comprising (A) a binder polymer comprising a divalent group represented by general formula (I), a divalent group represented by general formula (II), and a divalvent group represented by general formula(III), (B) a photopolymerizable compound, and (C) a photopolymerization initiator comprising a hexaarylbiimidazole compound containing at least one alkoxy group having 1 to 5 carbon atoms. (I) (II) (III) wherein R, R, and R each independently represent a hydrogen atom or a methyl group; R and R each independently represent an alkyl group having 1 to 3 carbon atoms, an alkoxy group, an OH group, or a halogen atom; and m and n are each independently an integer of 0 to 5.

The invention belongs to the technical field of flexible intelligent driving materials and particularly relates to a phototropic shape memory polymer material integrating photo-response and temperature response and preparation and application methods thereof. The phototropic shape memory polymer material is a polyurethane elastomer material in a double-crosslinked net structure and is prepared bytaking polycaprolactone diol as a chain extender, tetrahydroxy functionalized hexaaryl biimidazole molecular switches as dynamic crosslinking points and polyols as fixed crosslinking points to performcrosslinking reaction with isocyanate. The phototropic shape memory polymer material can present rapid deformation response under ultraviolet radiation and temperature driving to achieve good phototropic properties and is reversible in deformation under temperature driving, thereby solving the technical problem that intelligent photo-driven materials can achieve driving effects only when the thickness is reduced to a micron scale or are slow in driving response, irreversible or the like.

A photosensitive dry film composition includes a hexaarylbiimidazole blend, a photosensitizer that absorbs in the 350 to 410 nm wavelength range and a hydrogen donor. The hexaarylbiimidazole blend includes a hexaarylbiimidazole having a molar extinction coefficient of at least 4,000 in the 350 to 410 nm wavelength range and a hexaarylbiimidazole having a molar extinction coefficient of less than 4,000 in the 350 to 410 nm wavelength range.

This invention relates to a photothermographic element comprising a support, at least one photothermographic image-receiving layer, and at least one antihalation layer or a filter layer, wherein the antihalation or filer layer comprises an aqueous heat-bleachable composition comprising at least one dye and at least one hexaarylbiimidazole in the form of particles dispersed in a matrix comprising a hydrophilic or aqueous dispersible polymer.

Compositions and systems for labeling substrates, such as optical disks, using leuco dye-containing coating compositions are described. The composition can comprise a color forming composition, an electromagnetic radiation absorber, and a stabilizing agent. The color forming composition can include a leuco dye, a hexaarylbiimidazole activator, and an acid-generating source. The absorber can be admixed with or in thermal contact with the color forming composition. The stabilizing agent can be configured for protecting the leuco dye upon exposure to ambient light, wherein the stabilizing agent comprises a diarylguanidine dye salt. The coating composition can be optimized for development using electromagnetic radiation having a frequency from about 760 nm and 800 nm.

The invention discloses an amphiphilic fluorescent molecule switch. The amphiphilic fluorescent molecule switch is characterized in that the amphiphilic fluorescent molecule switch is hydrophilic group-hexaarylbiimidazole-fluorophore, wherein the hexaarylbiimidazole is a photochromic unit and is used for controlling the light emitting and quenching of the fluorophore; the fluorophore is used for emitting fluorescence; the fluorophore is connected with the hexaarylbiimidazole through a non-conjugated alkyl chain; the hydrophilic group is used for increasing the hydrophilcity and self-assembly property of the amphiphilic fluorescent molecule switch. The amphiphilic fluorescent molecule switch has the advantages that by synthesizing tetra(methyl tetraglycol)-hexaarylbiimidazole-boron fluoride dipyrrole for the self-assembly function and the imaging of a super-resolution imaging system, the higher resolution is realized, and the finer structure is observed; the sample preparation process is simple, the instrument requirement is lower, and the dynamic assembly process of the self-assembly body may be observed.

The invention belongs to the technical field of flexible intelligent driving materials and particularly relates to a phototropic shape memory polymer material integrating photo-response and temperature response and preparation and application methods thereof. The phototropic shape memory polymer material is a polyurethane elastomer material in a double-crosslinked net structure and is prepared bytaking polycaprolactone diol as a chain extender, tetrahydroxy functionalized hexaaryl biimidazole molecular switches as dynamic crosslinking points and polyols as fixed crosslinking points to performcrosslinking reaction with isocyanate. The phototropic shape memory polymer material can present rapid deformation response under ultraviolet radiation and temperature driving to achieve good phototropic properties and is reversible in deformation under temperature driving, thereby solving the technical problem that intelligent photo-driven materials can achieve driving effects only when the thickness is reduced to a micron scale or are slow in driving response, irreversible or the like.

The invention belongs to the technical field of microelectronic processing materials, and more specifically relates to an ultraviolet positive photoresist based on a hexaaryl biimidazole molecular switch and a use method thereof. The ultraviolet positive photoresist comprises an adhesive A containing oligomer dihydric alcohol, a functionalized hexaaryl biimidazole molecular switch cross-linking agent and a free radical quenching agent, and an adhesive B containing a catalyst and diisocyanate. When the photoresist is used for photoetching, the photoresist polymer is exposed under ultraviolet irradiation, a dynamic C-N covalent bond between two imidazole rings in a hexaarylbiimidazole (HABI) unit is cracked in response to illumination, and a high-molecular polymer containing the dynamic HABI unit is depolymerized to form an oligomer; and the free radical quenching agent is used for ensuring that the photoresist cannot be spontaneously recovered after the photoresist is exposed and depolymerized to form the oligomer, so that the oligomer formed at the exposed part of the photoresist can be dissolved in a developing solution, the unexposed part cannot be dissolved by the developing solution, and a positive pattern with high resolution is obtained after developing.

The invention discloses a polyurethane elastomer material and a preparation method thereof. By taking hexaarylbiimidazole (HABI) photochromic molecules and polyhydric alcohol as cross-linking agents of an elastomer material, the polyurethane elastomer material with a double-cross-linking network structure is constructed, and an intelligent deformation polyurethane material having rapid response toultraviolet light is correspondingly obtained and has a self-healing function. A polyurethane elastomer has good mechanical and physical properties of tenacity, ductility, fatigue resistance and thelike, is taken as an intelligent material and has potential application markets in drivers, software robots, artificial biological organs, sensors, manufacturing industry, medical treatment, wearableequipment, medical treatment instructions and the like.

The invention discloses an amphiphilic fluorescent molecule switch. The amphiphilic fluorescent molecule switch is characterized in that the amphiphilic fluorescent molecule switch is hydrophilic group-hexaarylbiimidazole-fluorophore, wherein the hexaarylbiimidazole is a photochromic unit and is used for controlling the light emitting and quenching of the fluorophore; the fluorophore is used for emitting fluorescence; the fluorophore is connected with the hexaarylbiimidazole through a non-conjugated alkyl chain; the hydrophilic group is used for increasing the hydrophilcity and self-assembly property of the amphiphilic fluorescent molecule switch. The amphiphilic fluorescent molecule switch has the advantages that by synthesizing tetra(methyl tetraglycol)-hexaarylbiimidazole-boron fluoride dipyrrole for the self-assembly function and the imaging of a super-resolution imaging system, the higher resolution is realized, and the finer structure is observed; the sample preparation process is simple, the instrument requirement is lower, and the dynamic assembly process of the self-assembly body may be observed.

Disclosed is a radiation-sensitive resin composition for spacers, which has high sensitivity and excellent storage stability. Also disclosed are a spacer formed by using such a radiation-sensitive resin composition, a method for forming such a spacer, and a liquid crystal display device comprising such a spacer. Specifically disclosed is a radiation-sensitive resin composition for forming spacers, which contains (A) a resin having, in a side chain, a branched structure and / or an alicyclic structure, an acidic group, and an ethylenically unsaturated group bonded to the main chain through an ester group, (B) a polymerizable unsaturated compound, and (C) a hexaarylbiimidazole compound (C1), an aromatic mercapto compound (C2) and an assistant (C3).

The invention belongs to the technical field of mechanical chemical conduction materials, and particularly relates to a stretching color change polyurethane elastomer material and a preparation methodthereof. The stretching color change polyurethane elastomer material with hexaarylimidazole as a color change unit is prepared from oligomer, namely dihydric alcohol, diisocyanate and hexaarylimidazole molecules as raw materials. The polyurethane elastomer is sensitive to mechanical force response, and the color change degree of the material is in a direct proportion to a stress, that is, the larger the stress is, the more conspicuous the color change is. The polyurethane elastomer material provided by the invention is of a linear structure, the main chain has hexaarylimidazole, the stress can be conducted to the hexaarylimidazole along the main chain when the polyurethane material is strained under the action of the stress, ultimately the C-B band between two imidazole rings of the hexaarylimidazole can be broken, then triphenyl imidazole free radicals of which the color is different from that of the hexaarylimidazole are formed, the stress is vanished, then the polyurethane materialis recovered to an initiator colorless state, and the process is reversible.

The invention belongs to the technical field of mechanochemical conductive materials, and more particularly relates to a photostimulation responsive gel material as well as preparation and applicationthereof. A preparation method comprises the following steps: mixing an organic solution of a polyhydroxy-modified hexaarylbiimidazole molecule, polyglycol and small-molecule polyol under a light-shielding condition and inert gas protection to obtain a mixed solution; and mixing diisocyanate with the mixed solution for a cross-linking reaction under the action of a catalyst to obtain the photostimulation responsive gel material containing an organic solvent after solidification molding. The gel material is sensitive to light stimulation when being placed in a solvent, the degree of deformationcan be regulated by the illumination time, and the longer the irradiation time, the more obvious the deformation. The smart gel material prepared in the invention is of a double crosslinked network structure, and hexaarylbiimidazole is contained in a main chain, which can balance the deformation ability and mechanical properties of the gel. The light-driven gel prepared in the invention has simple reaction process, low cost and wide application range.

The invention discloses an intelligent gel capable of regulating gel-and-sol transformation by light and application of the intelligent gel. The crosslinked point of the intelligent gel is six-aryl biimidazole, the alkinyl group and nitrine are subjected to click chemical reaction under the catalysis effect of cuprous bromide to form a cross-linked network polymer, the six-aryl biimidazole is successfully introduced into the polymer gel, and the excellent switching performance of small molecules is kept. Under the stimulation of visible light, the intelligent gel can be transformed from the solid gel state to the flowable 'liquid' gel state, and after being cut in the dry gel state, the gel has self repairing capacity. The prepared intelligent gel can be used as drug delivery carriers, self repairing materials, light valves of sensors and the like due to unique light-controlled dynamic intersection points and has potential application in biochemistry, medicines, chemical machinery, artificial intelligence and other fields.