129 results about "Diarylethene" patented technology

A secure, optically readable data medium comprises a data-carrying zone readable by a read light beam, and at least a portion that is photosensitive, being provided with a photosensitive material and exposed to the read light beam. The photosensitive material contains an active compound taken from the family of diarylethenes.

The present invention relates to a diarylethene derivative and a photochromic thin film using the same. More particularly, it relates to a diarylethene derivative and a photochromic thin film having excellent transparency prepared by depositing the same on the surface of a substrate, without crystallization or agglomeration to have effective photochromic property. This method also provides homogenous thin photochromic films with film thickness of a nano meter level and improved processability compared to conventional deposition processes thus, being suitable for coloring change with light repeatedly, optical information recording systems, and optical communication media.

To detect an irradiated radiation efficiently, so that the dose can be measured with high sensitivity. A photochromic material comprising an illuminant(s) which emits a light when irradiated with a radiation and a diarylethene photochromic compound(s) having a specific structure, and a color dose meter employing it.

A color-memorizing photochromic writing instrument, which comprises a writing tip portion connected to a light-shielding tubular member or refill; and a color-memorizing photochromic ink, wherein the ink is prepared by dissolving, dispersing or suspending a diarylethene photochromic compound in a vehicle containing at least a solvent and a binder, wherein the diarylethene photochromic compound is in a coloring state, and a color-memorizing photochromic writing instrument set comprising the writing instrument and a color-changing means.

The invention discloses an aggregation-induced emission type diarylethene fluorescent molecular switch and a preparation method and application thereof. The aggregation-induced emission type diarylethene fluorescent molecular switch is characterized in that an AIE radical is introduced to gain solid or aggregation strong emission capacity; two diarylethene can be used for quickly quenching fluorescence of fluorescent radicals which aggregate in the surrounding under the irradiation of ultraviolet rays or visible light, thus achieving the purpose of high fluorescent switch ratio. According to the light control type AIE-effect fluorescent molecular switch, the limitation that traditional fluorescent chromophore leads to fluorescence quenching is broken; in addition, the fluorescent molecularswitch in solid and aggregation state has the advantages of being high in switch ratio and high in fluorescence quenching efficiency by being compared with the fluorescent molecular switch in solution state; the fluorescent molecular switch is applicable to information storage under solid state and photoelectric devices and has potential application in biosensing and fluorescence imaging.

An ink composition for a color-memorizing photochromic writing instrument, which comprises a photochromic agent containing a diarylethene photochromic compound dissolved, dispersed or suspended in a vehicle containing at least a solvent and a binder.

An image forming medium includes a paper substrate and an imaging layer coated on or impregnated into a paper substrate, where the imaging layer is formed of an imaging composition that includes an alkoxy substituted diarylethene photochromic material dissolved or dispersed in a solvent or polymeric binder, and where the imaging composition exhibits a reversible transition between a colorless and a colored state.

The invention discloses a method for synthesizing an ultrashort-wavelength photochromic diarylethene compound by using imidazole-thiophene aromatic heterocycle and an application of the compound. A photochromic material can maintain good photochromic performance in a solution or film, has weaker fluorescence when the open-loop state ranges from 265 nm to 276 nm, has high fluorescence when the closed-loop state ranges from 400 nm to 550 nm, can be applied to a fluorescent photoswitch, an anti-forgery technology, a short-wavelength high-density holographic optical storage material and the like, and compared with the symmetrical thiophene or benzothiophene octafluorocyclopentene material, the material preparing cost is lower, and the application prospect is broader.

The invention discloses a dithienyl ethylene-trinaphthalene diphenyl imide near-infrared-fluorescence molecular switch, and a compounding method and application thereof. Multiple dithienyl ethylene are conjugated with single trinaphthalene diphenyl imide through oxygen bridge bonds, so that the defect that switching of a fluorophore cannot be controlled completely by the single trinaphthalene diphenyl imide can be overcome, and fluorescence switching speed and quenching efficiency can be enhanced effectively. The efficient butterfly dithienyl ethylene-trinaphthalene diphenyl imide is created, wherein the dithienyl ethylene is photochromic units and used for controlling illuminating and quenching of near infrared fluorescence clusters, and the trinaphthalene diphenyl imide is a fluorescence cluster used for emitting 650-800nm near infrared fluorescence, so that the obvious defects, such as low light stability, high compounding complexity, low fluorescence quantum yield and slow photoresponse, of near infrared diarylethene fluorescent molecular switches in the prior art are overcome.

The invention relates to a triphyene derivative containing diarylethene and an application thereof. The triphyene derivative is obtained by the way that triphyene derivative halogeneated triphyene and bisthienylethenes containing trimethyl borate are in coupled reaction. The designed and compounded triphyene derivative has the characteristics of being good in heat stability, high in quantum efficiency, short in light response time and the like. In addition, a unique solvation color development phenomenon is shown in triphyene derivative alkane chloride. Consequently, the triphyene derivative containing the diarylethene not only can be used for full color display and information storage but also can be used for trace detection of the alkane chloride.

The invention discloses a 9,10-diarylethene anthracene (CPASA) aggregation-induced light emitting molecule, namely 9,10-bis{4-{N,N-di[4-(carbazole-9-yl)phenyl]amino}styryl}anthracene, yellow light is emitted in a solid state, and the maximum emission wavelength is 581nm. The compound CPASA is not dissolved in water but in organic solvents such as dimethyl formamide, tetrahydrofuran, chloroform, dichloromethane, ethyl acetate and acetone, does not emit light in organic solvents like dimethyl formamide and emits yellow fluorescent light in a water/dimethyl formamide mixed solvent, and the fluorescent light in the water/dimethyl formamide mixed solvent with the water content of 20% is the strongest. The CPASA has aggregation-induced light emitting property and has important application value in the fields of fluorescent switches and sensors, fluorescent probes, biomarkers and fluorescent imaging, organic light emitting devices and the like.

The present invention relates to a photochromic fluorescent polymer and a preparation method thereof, and more particularly, to a photochromic fluorescent polymer having bonds between diarylethenes and aryethene-vinylene precursors with a weight average molecular weight of 500 to 1,000,000, which exhibits highly improved photochromic and fluorescent characteristics compared to conventional photochromic fluorescent materials and excellent solubility to organic solvents, thus being applicable for photofunctional materials and information processing device such as optical recording, optical switches, non-destructive optical recording materials.

The invention provides a diarylethene organic photochromic material based on furan. The structural formula of the diarylethene organic photochromic material is of formula I as shown in the specification. The invention further provides a preparation method of the photochromic material. The preparation method comprises the following steps: in a reaction container, performing reaction on a substituted aldehyde compound based on diarylethene, dibromocyclopentene, potassium phosphate, a palladium catalyst, N,N-dimethylformamide or dioxane or tetrahydrofuran or methylbenzene for 1-24 hours at 20 DEG C to backflow temperature, cooling, filtering, extracting, performing spinning drying, and passing through a column, thereby obtaining a diarylethene compound of formula I. The photochromic material is simple and efficient in preparation method, high in yield, good in economy, high in on-scale production value and good in environmental-friendliness. The photochromic material has very good spectral properties, can be used for preparing multihoming photoelectric molecule switches, molecular lead elements, photochromic light emitting devices and the like.

The invention discloses a heat discoloration printing ink and a method preventing a board card from becoming too hot through the heat discoloration printing ink and belongs to the technical field of electronic circuit equipment. The heat discoloration printing ink is formed by mixing acrylic resin, epoxy resin, polyvinyl alcohol, barium sulfate, carbamate, 1-hydroxycyclohexylphenylketone, diarylethene, spiral dihydrogen indole, iodine and ferric oxide. The mixed raw materials are added into a high-speed dispersing agent to be dispersed and then is ground through a three-roller grinder. Surface-mounted elements on a plug-in circuit board are shielded, and the surface of a printed circuit board is coated with the heat discoloration printing ink in a silk-screen printing or spraying mode. According to the heat discoloration printing ink and the method preventing the board card from becoming too hot through the heat discoloration printing ink, the color of the heat discoloration printing ink can be changed when using temperatures are different, the temperature of the surface of the PCB can be directly and conveniently read, and application and popularization value is very good.

Novel photochromic diarylethenes substituted with an isoxazole group and the method of preparation are disclosed. Also disclosed are compositions made with the photochromic diarylethenes. The preparation of thin films with the photochromic diarylethenes or compositions thereof are disclosed. The photochromic diarylethenes or compositions thereof may be used, for example in recording materials, photochromic windows, indicating elements, plastic mirrors, photochromic filters, photo switches, photosensitive drums, recording elements, solar cells, lens, fibers and optical elements.

TPV (Thermoplastic Vulcanizate) used in an automobile antenna material is prepared by conducting dynamic vulcanization on a vulcanization mixture. The vulcanization mixture at least comprises the following raw materials in parts by weight: 0.1 to 3 parts of grafted thermoplastic polymer, 100 parts of vulcanizable elastomer, 50 to 200 parts of thermoplastic polyolefin, 0.01 to 10 parts of a cross-linking agent, and 10 to 100 parts of filling oil, wherein the grafted thermoplastic polymer is obtained by modifying a diarylethene compound. The invention relates to the field of TPV, in particular to the TPV used in the automobile antenna material and a preparation method of the TPV.

The invention discloses a photochromic and electrochromic bifunctional compound and a preparation method thereof. A triphenylamine group is introduced into a photochromic diarylethene compound. So the synthesized compound contains a triphenylamine group and a photochromic diarylethene unit at the same time, and thus has the photochromic and electrochromic functions at the same time. The triphenylamine group and the diarylethene group are connected through a covalent bond, the characters of the two groups are not affected by each other, and the development of respective characters is assisted. If the compound is applied to the storage filed, an electrochromic open/close state is increased on the basis of photochromic open/close state, so that the storage capacity is doubled without increasing any storage medium. The bifunctional compound and preparation method thereof have an important theory and actual meaning for the researches on storage devices and switch devices.

The invention relates to a solar energy fuel, wherein in an elastic aerogel comprising carbon nano-tubes and graphene, photoinduced isomers (such as azobenzene or a compound containing an azobenzene group, a spiropyran compound, a diaryl vinyl compound and the like) are grafted on the wall of the carbon nano-tubes. A purpose of the present invention is to provide a novel way adopting solar energy and overcome problems of energy storage, difficult equipment moving and the like in the existing way adopting solar energy. According to the present invention, carbon nano-tubes (or addition of graphene) is adopted to prepare the sheet-like (or flannel-like) elastic aerogel, and then two photoinduced isomers with stable structure and different energy levels are covalently grafted, or two photoinduced isomers with stable structure and different energy levels are covalently grafted on carbonnano-tubes, and then the functionalized carbon nano-tubes are adopted to prepare the sheet sponge-like elastic aerogel; and the prepared solar energy fuel of the present invention provides the novel approach for the solar energy utilization.

Disclosed is light-driven actuator element characterized in that, inter alia, it can be reduced to micrometer size, is rapidly responsive, and reversibly changes to enable repeated use. The light-driven actuator element includes a crystal of diarylethene compound which changes shape upon photoisomerization (e.g., the compound of Structural Formula (I) below, where R¹ represents a hydrogen atom or methyl group and R² represents a methyl group). The element can be a rod-shaped or plate-like microcrystal having a size on the order of micrometer. The element bends (or contracts) on irradiation with ultraviolet light and expands to return to the original size on irradiation with visible light.

A novel photochromic liquid crystal comprising a diarylethene compound having both photochromic properties and liquid crystallinity. This compound is a photochromic diarylethene compound having a mesogen group in each of the two aryl groups. The photochromic liquid crystal provides a large change in birefringence by photoisomerization or phase transition, and has high durability against repeated changes in birefringence. A side-chain polymer liquid crystal containing the above photochromic liquid crystal is useful as an optical recording material. Such an optical recording material is capable of performing light modulation by irradiation with light near Tc thereof, and is applicable to photo operator devices, optical memories, and the like. Further, the optical recording material is useful as a material for a recording layer of an optical recording medium such as an optical disk or an optical memory card.

The invention discloses a novel dual-erasable anti-counterfeiting method with multistable state and continuously controllable reflection color and an application in the field of optical information coding. The method and the application have the characteristics of high thermal stability and high fatigue resistance, and realize a material system consisting of the diarylethene compound based on theendogenous chiral steric hindrance type alkene bridge and liquid crystal. The diarylethene based on the endogenous chiral steric hindrance type alkene bridge has the following structural characteristics: the material system is composed of the diarylethene compound based on the endogenous chiral steric hindrance type alkene bridge and liquid crystal, has the advantages of simple processing, low rawmaterial cost, wide spectral color adjustment range and excellent thermal stability and fatigue resistance, and is expected to be further widely applied to the field of dual erasable anti-counterfeiting and optical information coding with good thermal stability and strong fatigue resistance.

The invention relates to a diarylethene type photochromic insecticidal compound and a preparation method and a purpose thereof. Specifically, the invention discloses a compound as shown in formula (A) or an optical isomer or a cis-trans-isomer thereof, or an agricultural pharmaceutically acceptable salt, and the definitions of substituent groups are as stated in the description. The invention also discloses the preparation method and the purpose of the compound. The formula (A) is shown in the description.