27 results about "Diarylethene" patented technology

The invention discloses a carbamoyl-substituted diarylethene derivative as well as a preparation method and application thereof, and the preparation method comprises the following steps: reacting R-substituted 3-bromo-2-hydroxybenzaldehyde with an arylmethyl triphenylphosphonium bromide compound or an aryl acetic acid compound to obtain an intermediate A; then the intermediate A and cuprous cyanide are subjected to a heating reaction in N, N-dimethylformamide and nitrogen atmosphere, and an intermediate B is obtained; and finally, heating the intermediate B, acetaldoxime and indium trichloride in toluene for reaction to obtain the carbamoyl-substituted diarylethene derivative. The carbamoyl-substituted diarylethene derivative disclosed by the invention has a remarkable effect in an in-vitro anti-tumor activity test, particularly has excellent anti-proliferation ability to human BRCA mutant tumor cells, and can be used for preparing medicines for treating PARP-1 activity abnormity related diseases. The synthesis route is simple, the cost is low, and large-scale implementation is facilitated.

The invention discloses a thiophene site specific modified TAE material as well as a preparation method and application thereof, and relates to the technical field of organic optical functional materials. A main body structure of the TAE material specifically modified by thiophene sites is tetraarylethene, thiophene substitution exists on the tetraarylethene, and R groups are introduced to the tail end of thiophene, or the TAE material specifically modified by the thiophene sites is obtained. The invention also provides an application of the TAE material or the photochemical sensor specifically modified by the thiophene site in photochromism or mechanochromism or cell imaging or safe ink or anti-counterfeiting. According to the invention, through conjugate coupling of a thiophene ring and an ethylene bridged benzene ring, a diarylethene functional unit with light-induced isomerization capability is formed, and the aggregation-induced emission (AIE) performance of the material is remarkably improved while the light response activity is realized. The synergistic effect endows the material with revolutionary potential in the fields of light-operated bimodal patterning technology and multi-dimensional anti-counterfeiting application.

The present invention includes methods for forming an object in a volume including a photohardenable composition described herein that includes a photohardenable resin component and a photoswitchable photoinitiator comprising a P-type photochromic molecule. The present invention also includes photoswitchable photoinitiators comprising a P-type photochromic molecule, preferably comprising a P-type diarylethene molecule, and photohardenable compositions and methods including such photoswitchable photoinitiators.

The invention discloses a diarylethene compound as well as a preparation method and application thereof, and belongs to the technical field of organic. The invention provides a diarylethene compound. The chemical formula of the diarylethene compound is as shown in the formula I in the specification. The diarylethene compound provided by the invention has good high-temperature stability, can still keep excellent photochromic performance after high-temperature processing, is high in light-variable response speed, large in light-variable color change amplitude and long in cycle service life, can realize an obvious light-variable effect by adding a small amount, and has wide application prospects. The method can be widely applied to preparation of high-temperature-resistant resin compositions and photochromic materials with obvious light-variable effects.

The invention discloses a series of photoinduced isocompounds based on an alpha-cyano diarylethene skeleton as well as a preparation method and a metal ion regulation mechanism of the photoinduced isocompounds. The photoinduced isomeric compound is prepared through Knoevenagel condensation reaction by taking alpha-cyano diarylethene as a basic skeleton structure, the structural general formula of the photoinduced isomeric compound is shown in the specification, and the photoinduced isomeric compound is named as a hydroxyl-containing alpha-cyano diarylethene aromatic derivative. The photoinduced isomerization compound disclosed by the invention has good polarity sensitivity and photoinduced isomerization capability, and Z / E isomerization can be realized under the irradiation of ultraviolet light. The addition of metal ions is not a fluorescent response trigger factor, but can effectively adjust the photoresponse degree and rate of the photoinduced isocompound. The synthesis method of the photoisomerization compound is simple, the product is easy to purify, the optical property caused by photoisomerization can be regulated and controlled through coordination of polarity and metal ions, and an effective strategy is provided for designing a high-performance optical function material and application thereof.

The application discloses a kind of photocontrol chiral ligand based on diarylethene, structural general formula is as shown in following formula:After the photocontrol chiral ligand based on diarylethene synthesized in the application and rhodium catalyst coordination, when catalyzing asymmetric carbon hydrogen amidation at room temperature, higher reaction yield and higher ee value can be obtained by using ligand in open loop state to catalyze, and lower reaction yield and lower ee value can be obtained by using ligand in light stable state to catalyze.The application makes up the deficiency that there is currently lack of photo-thermal bistable photocontrol catalyst in the field of photocontrol asymmetric catalysis, and widens the application of diarylethene in photocontrol asymmetric catalysis.

The application discloses a diarylethene polymer, and the structure is shown as (formula 1), wherein n is an integer of 2-20, R 1 independently H or F atom, R 2 independently substituted or unsubstituted aryl, and represents cis-trans isomer form. The application further discloses a preparation method of the diarylethene polymer, which comprises the following steps: (1) under the protection of inert gas, carrying out click polymerization of a binary acetylenic compound and a binary mercapto compound in an organic solvent, wherein the polymerization temperature is 20-50 DEG C, the reaction time is 1-4 hours, and the molar ratio of the binary acetylenic compound to the binary mercapto compound is 1:(1-1.1); (2) after the reaction is completed, dissolving the product in an organic solvent, then adding the product into n-hexane to carry out precipitation, collecting the precipitate, and drying to constant weight, so as to obtain the diarylethene polymer. The preparation method is high in efficiency, mild in condition, simple and easy to implement, and good in atom economy, and the obtained diarylethene polymer can be used in anti-fake and copy materials.

The invention discloses an endoplasmic reticulum targeting fluorescence lightening type diarylethene organic compound and application thereof in biological imaging, the structure of the mitochondrial targeting fluorescence lightening type diarylethene organic compound is shown as a general formula (1), in the general formula (1), R1 represents an alkyl chain, and R2 represents an endoplasmic reticulum targeting group. All the fluorescent lighting type diarylethene photochromic materials disclosed by the invention have good biocompatibility, and accurate endoplasmic reticulum targeting can be realized by all the fluorescent lighting type diarylethene photochromic materials.

The invention relates to a preparation method of a diarylethene-based triplet-state biradical molecule with short wavelength emission, and belongs to the field of organic light-emitting free radical materials. According to the invention, on the basis of the existing photochromic skeleton-diarylethene, the diarylethene-based triplet-state biradical molecule which not only has photochromic property but also has luminous free radical property and has short-wavelength emission is designed and synthesized, and the diarylethene-based triplet-state biradical molecule has photochromic property and luminous free radical property; free radicals are generated in situ through photostimulation. The invention develops a technology for preparing stable light-emitting free radicals by a method for generating free radicals in situ through photostimulation, and the method is novel.

The application belongs to the field of intelligent photoluminescent materials, and relates to a photochromic molecule, a visible light-regulated solid-state composite film and a preparation method and application thereof. The photochromic molecule is formed by connecting a fluorescent molecule on a diarylethene skeleton, and a structural formula of the photochromic molecule is: a preparation method thereof comprises the following steps: taking diarylethene aldehyde as raw material, and sequentially performing alkenyl aldehyde modification, benzimidazole modification and benzimidazole salt modification to prepare the photochromic molecule. The solid-state composite film comprises the solid-state composite film and the photochromic molecule loaded on the solid-state composite film, the solid-state composite film is made of PP and PMMA, and the solid-state composite film can be reversibly regulated under visible light. The preparation method is simple, the raw material consumption is small, the prepared solid-state composite film has high photoluminescent intensity, and reversible regulation of the fluorescent molecule under visible light is realized. The solid-state composite film has very important significance for developing high-safety anti-counterfeiting, and has wide application prospect.

The invention relates to an encapsulated luminescent pigment comprising a luminescent substance and a diarylethene as a molecular switch, wherein the luminescent substance and the diarylethene are dissolved and / or dispersed as separate molecules in a polymer particle. The luminescent substance has an emission spectrum, and the diarylethene has a first absorption spectrum in a first switched state and a second absorption spectrum in a second switched state, the first absorption spectrum of the diarylethene not significantly overlapping with the emission spectrum of the luminescent substance and the second absorption spectrum of the diarylethene significantly overlapping with the emission spectrum of the luminescent substance such that the luminescence of the luminescent substance is substantially more intense in the first switched state than in the second switched state of the diarylethene. The invention further relates to a switchable luminescent printing ink, comprising an encapsulated luminescent pigment as described herein, and to a value document, preferably a banknote, comprising an imprint which has a first switchable luminescent printing ink as described herein.

The invention belongs to the field of photochromic materials, and particularly relates to a photochromic diarylideneester derivative and a synthesis method thereof. The photochromic diarylallyl ester derivative takes phenanthrene bridged dithienylethene as a skeleton, ethyl benzoate groups are bonded at two ends, and the photochromic diarylallyl ester derivative is synthesized by adopting a'one-pot 'cascade reaction: firstly, biphenyl dicarbonyl chloride is prepared from biphenyl dicarboxylic acid and oxalyl chloride, and is subjected to Friedel-Crafts acylation, McMurry coupling and Suzuki coupling, so that the total yield is increased by more than or equal to 30% compared with that of a traditional route; the obtained compound shows reversible colorless blue color-changing circulation under ultraviolet / visible light irradiation, and no attenuation is generated after the circulation is carried out for more than 5 times; in a THF / H2O system, the fluorescent probe shows a typical aggregation-induced emission effect, the fluorescence intensity is enhanced by about 20 times, and the fluorescent probe can be applied to the fields of optical storage, anti-counterfeiting coatings, biological detection and the like.

This invention discloses a reactive fluorescent probe, its preparation method, and its application. The structural formula of the reactive fluorescent probe is shown below. This invention utilizes diarylethene to design a probe capable of continuously detecting H2S and Fe. 3+ This reactive fluorescent probe exhibits strong anti-interference capabilities and a low detection limit, and can rapidly react with H2S and Fe in food and proteins. 3+ The reaction occurs without interference. Compared to probes that can only detect a single substance, probes that can continuously detect two substances significantly reduce costs. Furthermore, utilizing the photochromic properties of diarylethene, the fluorescent probe 2o, after reacting with H2S, generates fluorescent probe 1o, which can be used as an anti-counterfeiting material in daily life.

The application discloses an ultraviolet cumulative discoloration indicating anti-ultraviolet BOPET film and a preparation method thereof. The film comprises, in sequence along a light receiving direction, a light receiving PET surface layer, a first anti-ultraviolet sublayer, a second anti-ultraviolet sublayer, a third anti-ultraviolet sublayer, an irreversible discoloration indicating layer and a mounting functional layer. The three anti-ultraviolet sublayers all contain lignin nanoparticles, and the content of the lignin nanoparticles decreases along the direction away from the light receiving side; the irreversible discoloration indicating layer contains PET modified by a diarylethene structure unit copolymerization or grafting and a photooxidation retardant. The film is prepared through multilayer co-extrusion, bidirectional stretching and heat setting. The film can produce stable color prompts according to the attenuation of the anti-ultraviolet layer caused by ultraviolet accumulation while maintaining transparency and anti-ultraviolet performance.

The invention belongs to the technical field of photochromic material synthesis and metal ion detection, and particularly relates to a diarylethene photochromic molecule with a gating property, a preparation method thereof and application of the diarylethene photochromic molecule in metal ion detection. The diarylethene photochromic molecule comprises a nitrogen dithio crown ether functionalized group, and an aldehyde group electron withdrawing group is introduced into a styrene group to form a BTF-AAE structure. According to the molecule, the photochromic reactivity is regulated and controlled through coordination of an aza-dithio-crown ether group and metal ions, and the selectivity to Ag < + > is improved by introducing an aldehyde group. The molecule preparation method is simple, the detection system is sensitive in response and high in selectivity, and a novel material and method are provided for metal ion detection.

The invention provides an ultrathin ultraviolet photochromic anti-counterfeiting printing film and a preparation method thereof. The printing film sequentially comprises a functional protection layer, an optical variable layer and a base material layer, wherein the materials of the optical variable layer comprise acrylic resin, polyurethane resin, a modified diarylethene photochromic material and a functional auxiliary agent; an electron-withdrawing group and an electron-donating group which can form intramolecular hydrogen bonds / coordinate bonds are introduced to a diarylethene photochromic material, the electron-withdrawing group and the electron-donating group form push-pull, and after excitation, charge transfer accelerates reaction coordinates; the intramolecular hydrogen bonds form controllable interaction, so that the whole is folded to a favorable conformation, the conformation rearrangement energy wall is remarkably reduced, the photoresponse speed is further improved in a synergistic manner, and the photostability of the photochromic material is improved; the resin is compounded and the content of the photochromic material is regulated, so that the coating has an obvious photochromic effect, and the influence on the film-forming property and the mechanical property of the coating due to too high addition amount is avoided.

Disclosed are two different block copolymer families having general structures (I) or (III), composition thereof, and the process of using these compositions for DSA; wherein B segment and B1 segment are polar block copolymer segments comprising either alkyl 2-methylenealkanoate derived repeating units, lactone derived repeat units, oxirane derived repeat units, oxetane or cyclic carbonate derived repeat units; L and L1 are either a direct valence bond or a linking moiety derived from a 1,1-diarylethene; A segment and A1 are non-polar block copolymer segment comprising styrenic repeat unit, E′, E″ E3 and E4 are different types of end groups, A2 is a block segment derived from an olefin or a diene having a Tg of about −5° C. to about −50° C., and in structure (I) is multi-tethered with oligo flexible tethered groups at various positions as outlined. E′-A-L-B-E″ (I) E3-A1-A2-L1-B1-E4 (III)

The invention belongs to the technical field of synthesis and application of photochromic materials, and particularly relates to a diarylethene compound, a nano fluorescent dye, a preparation method of the diarylethene compound and the nano fluorescent dye and application of the diarylethene compound and the nano fluorescent dye in the anti-counterfeiting field. According to the invention, 2-methylbenzothiophene is prepared into a fluorescence opening type diarylethene molecule through a classical synthesis route, and then the molecule is used for preparing the nano fluorescent dye. The diarylethene nano fluorescent dye prepared by the invention has good thermal stability and dynamic fluorescent anti-counterfeiting characteristic, combines the characteristics of photochromism and fluorescent imaging, simply and effectively prepares dynamic fluorescent anti-counterfeiting patterns and two-dimensional codes, and has the advantages of high anti-counterfeiting sensitivity, simplicity and convenience in operation, strong repeatability and the like. The application of diarylethene in the field of fluorescent falsification prevention is verified, and a thought is provided for design and modification of the multifunctional fluorescent nano dye.

The invention belongs to the technical field of organic light-emitting crystal materials, and particularly relates to colorless transparent crystals of organic light-emitting macrocycles and a preparation method and application of the colorless transparent crystals. According to the colorless transparent crystal of the organic light-emitting macrocycle, a dibenzofuran compound serves as a photoelectric element, diarylethene serves as an intelligent element, the dibenzofuran compound and the diarylethene are subjected to conjugate coupling through reasonable design and synthesis, and the O-(2 + 2) novel intelligent molecular macrocycle is obtained. The O-(2 + 2) furyl organic light-emitting macrocyclic colorless transparent crystal is obtained through a slow evaporation method, the crystal is subjected to UV illumination, the crystal is changed from racemization to meso-rotation from racemization, configuration transformation in stereochemistry occurs, and crystal elongation is achieved. The photomechanical property of the organic crystal can be realized by performing UV illumination on the crystal.

The application discloses a kind of multilayer structure's anti-ultraviolet high-barrier transparent film and preparation method thereof, composite film material includes barrier layer, adhesive layer, intermediate layer and heat-sealing layer. Among them, barrier layer selects KPET, KNY and other high-efficiency barrier materials, and heat-sealing layer is dispersed with anti-ultraviolet particles, and the ultraviolet protection capacity is improved. Intermediate layer uses NY, PET and other reinforced film structures, and the adhesive layer ensures the stable connection between layers. In addition, the introduction of ink layer and reflection layer can use two kinds of diarylethene film with different color change, with photochromic characteristics, not only add beauty, but also improve product interaction, reflect ultraviolet after color change, improve the anti-ultraviolet high-barrier of the application, while maintaining its transparent effect.

The invention discloses a diarylethene copolymer as well as a preparation method and application thereof, and belongs to the technical field of macromolecules. The diarylethene copolymer provided by the invention comprises a structural unit A and a structural unit B, the structural unit A is derived from a diarylethene monomer; the structural unit B is derived from methyl methacrylate; the chemical formula of the diarylethene monomer is as shown in the formula I in the specification. The diarylethene copolymer provided by the invention has good dispersion stability, anti-fatigue performance and optical performance, can still keep excellent photochromic performance after high-temperature processing, and has good aging resistance, multiple optical variable cycle times and high light transmittance; the method can be widely applied to preparation of long-service-life and high-transparency resin compositions and workpieces.

The present invention includes methods for forming an object in a volume including a photohardenable composition described herein that includes a photohardenable resin component and a photoswitchable photoinitiator comprising a P-type photochromic molecule. The present invention also includes photoswitchable photoinitiators comprising a P-type photochromic molecule, preferably comprising a P-type diarylethene molecule, and photohardenable compositions and methods including such photoswitchable photoinitiators.

The invention discloses a mitochondrial targeting fluorescence lightening type diarylethene organic compound and application thereof in biological imaging, the mitochondrial targeting fluorescence lightening type diarylethene organic compound has a structure as shown in a general formula (1), and in the general formula (1), R1 represents an alkyl chain, and R2 represents a mitochondrial targeting group. All the fluorescent lighting type diarylethene photochromic materials disclosed by the invention have good biocompatibility, and accurate mitochondrial targeting can be realized by all the fluorescent lighting type diarylethene photochromic materials.

This invention provides a water-soluble nanomaterial with full visible light response, its preparation method, and its applications. The water-soluble nanomaterial comprises polymer vesicles and a carboxyl-functionalized diarylethylene compound and ZnSe / ZnS quantum dots encapsulated within the polymer vesicles; wherein the polymer constituting the polymer vesicles is an amphiphilic copolymer, and the carboxyl-functionalized diarylethylene compound is anchored to the surface of the ZnSe / ZnS quantum dots. This water-soluble nanomaterial can operate stably in aqueous solution, achieving efficient and reversible photoisomerization response under alternating irradiation with 405nm and 590nm full visible light, realizing a reversible color change between colorless and blue. It possesses advantages such as reversible photochromic properties, full visible light response characteristics, rapid light response, high closed-loop light conversion efficiency, excellent light-switching performance, high aqueous stability, and low phototoxicity.

The application discloses a light-controlled endogenous chiral diarylethene supramolecular cage, which is obtained by self-assembly of a bidentate diarylethene pyridine ligand and a compound containing a divalent metal palladium ion; the structural general formula of the bidentate diarylethene pyridine ligand is as follows: The application provides a preparation method of the light-controlled endogenous chiral diarylethene supramolecular cage, in which, after one metal palladium ion loses two nitrate radicals, the metal palladium ion is coordinated with nitrogen atoms on four pyridines, the whole process is relatively simple, and finally, the target product is formed under the influence of a self-correction behavior in supramolecular self-assembly driven by thermodynamics.

This invention discloses an anti-ultraviolet (UV) film and its preparation method. The composite film material includes a barrier layer, an adhesive layer, an intermediate layer, and a heat-sealing layer. The barrier layer uses high-efficiency barrier materials such as KPET and KNY, while the heat-sealing layer disperses UV-resistant particles to enhance UV protection. The intermediate layer employs a reinforced film structure such as NY or PET, and the adhesive layer ensures a stable connection between the layers. Furthermore, an ink layer and a reflective layer are introduced. Two diarylethylene films with different color-changing properties can be used, exhibiting photochromic characteristics. This not only enhances aesthetics but also improves product interactivity. After color change, the film reflects ultraviolet light, improving the UV protection of this invention while maintaining its transparency.

The invention provides synthesis of an endogenous and exogenous chiral photochromic dye and liquid crystal application of the endogenous and exogenous chiral photochromic dye. The steric hindrance type diarylethene is used as a matrix, endogenous chirality and exogenous chirality are integrated into a single molecule for the first time, and the endogenous and exogenous chiral dynamic optical switch based on the steric hindrance type diarylethene is provided. The binaphthol is obtained by determining whether the binaphthol is bridged or not, changing the bridging length of the binaphthol and introducing side chain alkyl to change the molecular structure. The synthesized RBNBT series molecules have the characteristics of high thermal stability and strong fatigue resistance, and two different diastereoisomers, namely (R, M, R)-RBNBT series molecules and (R, P, R)-RBNBT series molecules, can be formed through chiral resolution.