61 results about "Spiropyran" patented technology

The invention provides powder with reversible photochromic performance as well as a preparation method and application thereof, and the powder with reversible photochromic performance is a photochromic microcapsule and consists of a core material and a wall material, the core material accounts for 30%-50% of the total weight of the microcapsule, and the wall material accounts for 50%-70% of the total weight of the microcapsule; the core material is an indoline spiroheterocyclic compound, and the wall material is a biocompatible polymer. The core material is an indoline spiroheterocyclic compound, and the wall material is a biocompatible polymer; the powder is prepared by taking indoline spiropyran as a photochromic core material through a microcapsule coating process, has reversible response characteristics of developing under ultraviolet irradiation and decolorizing under strong light irradiation, and can be compounded with a tattooing pigment matrix to obtain a tattooing product with active developing and decolorizing regulation and control functions. The problem that the photochromic tattoo pigment is irreversible in color change is solved, and meanwhile the photochromic tattoo pigment has good stability and biocompatibility.

The present application relates to a kind of spiropyran derivatives, color-changing glass paint and its preparation method and application.The spiropyran derivative, characterized in that, with as shown in formula (I) structure: formula (I);In formula (I), R1, R2, R3, R4, R5 Or R6 Independently be H, OCH3 Or the specific substituent group on the specific benzene ring of this spiropyran derivative, by its skeleton and specific substituent group cooperation, can realize the color change under light condition;With the spiropyran derivative as photochromic powder, be applied in color-changing glass paint, can make color-changing glass paint color change under light condition, not only can make the light transmittance of color-changing glass paint after color change lower, and after aging treatment, still can make color-changing glass paint keep lower light transmittance, and durability is good.

The application discloses a spiropyran derivative with color and fluorescence dual switch, a photochromic material and a preparation method and application thereof, the spiropyran derivative is a compound with a chemical structure general formula (1); and further discloses a photochromic material prepared by mixing the spiropyran derivative with an epoxy resin and a preparation method thereof. The aromatic fluorescent group is introduced into the side group of the spiropyran material, the conjugated system of the fluorescent group itself is large, and thus the fluorescence emission intensity after the spiropyran is opened is increased. The compound shows good photochromic and photoluminescent effects in organic solvents and solid media; the fluorescent group and the spiropyran material are combined, and a molecular switch material with significant color and fluorescence changes can be prepared; the spiropyran derivative can be used for preparing a two-dimensional optical display device and an intelligent material molecular switch.

The invention discloses a preparation method of a light response type UV regulation and control material and a 3A optical film, and relates to the technical field of optical films.The preparation method comprises the steps that spiropyrane is dissolved in ethyl acetate to form an oil phase, and first liquid is obtained; dispersing nano silicon dioxide in a water phase containing gelatin to obtain a second liquid; stirring and mixing the first liquid and the second liquid to form an emulsion; evaporating the emulsion at 55-65 DEG C for at least 12 hours to form a spiropyrane-silicon dioxide hybrid nanocapsule; the spiropyrane-silicon dioxide hybrid nanocapsule is dispersed into light-cured polyacrylate, and a light response type UV regulation and control material is obtained; the 3A optical film comprises a light response type UV regulation and control layer, and the material of the light response type UV regulation and control layer is a light response type UV regulation and control material. The 3A optical film realizes flexible regulation and control of absorption of ultraviolet rays according to different weather scenes.

The invention relates to the technical field of nursing products, and discloses a preparation method of a foaming neck pillow with a built-in air bag, the foaming neck pillow with the air bag comprises a foaming body and the air bag; the foaming body is formed by reacting, injecting and foaming a component A and a component B; the component A is prepared from furfurylated polyether polyol, polyethylene glycol, polycaprolactone glycol, a polyurethane catalyst, an organic silicon foam stabilizer and water; and the component B is prepared from polymerized diphenylmethane diisocyanate, isocyanate with a spiropyrane group and isocyanate with a maleimide group. The method comprises the steps that an in-situ foaming technology is adopted, an air bag and a foaming body are integrally bonded and formed through an interface chemical reaction, and the air bag is prepared through mixing, foaming, curing and post-curing. The neck pillow has interface bonding strength, and delamination is avoided; the product integrates thermally induced shape memory and phase change temperature sensing adjusting functions; and by utilizing the reversibility of the Diels-Alder reaction, the material also has a self-repairing capability, so that the comprehensive performance and durability of the product are improved.

The invention provides a development method of a large conjugated system spiropyrane photochromic material, which successfully introduces naphthalene and benzofuran units into a spiropyrane molecular skeleton through screening and optimization of multi-step organic chemical reaction conditions, and develops a series of large conjugated system spiropyrane photochromic micromolecular materials. Under the irradiation of 365 nm ultraviolet light or natural light, the absorption spectrum of the series of molecular materials can generate obvious red shift, and meanwhile, the free volume of molecules is obviously increased, so that the material can generate obvious photochromic phenomenon in a pure solid state, several large conjugated system spiropyrane materials all turn into blue systems after the irradiation of a light source, and the photochromic effect is good. By means of the development method of the large conjugated system spiropyrane photochromic material, various photochromic materials with the absorption spectrum obviously changed and the molecule free volume obviously increased after ring opening isomerization can be obtained, the photochromic capacity and reversibility of the materials are greatly improved, and regulation and control of the color of the photochromic materials are achieved.

The invention discloses a photochromic spiropyrane derivative containing an adamantyl group and a preparation method and application thereof, the photochromic spiropyrane derivative containing the adamantyl group takes 4-dimethylaminopyridine and dicyclohexylcarbodiimide as catalysts, and 2-(3 ', 3'-dimethyl-6-nitro spiro [chromene-2, 2 '-diketone)-1, 2, 4-triazole-2-yl]-1, 3, 4-triazole-2-yl]-1, 3, 4-triazole-2-yl]-1, 3, 4-triazole-2-yl]-1, 3, 4 According to the invention, 2, 2 '-indoline]-1'-yl) ethanol and an adamantane carboxylic acid compound are subjected to an esterification reaction, adamantanoate series large steric hindrance groups are introduced to spiropyrane molecules, a relatively loose accumulation mode of the compound is caused, and pi-pi accumulation of the spiropyrane molecules is effectively prevented, so that a photochromic reaction of spiropyrane in a solid state is realized; the preparation method is simple, post-treatment is convenient, and the prepared photochromic spiropyrane derivative containing the adamantyl group is high in yield and good in fat solubility.

The application belongs to the technical field of polymers, and particularly relates to a polyurethane material and a preparation method and application thereof. The polyurethane material comprises the following components in parts by weight: polycaprolactone diol 10-50 parts, hexamethylene diisocyanate 1-10 parts, catalyst 0.05-0.3 parts, spiro-pyran diol 0.5-5 parts, and crosslinking agent 1-6 parts. The molecular formula of the spiro-pyran diol is shown in the description. The polyurethane material prepared by the application can realize two response functions under a single stimulus, and significantly expands the development potential and application field of the double-way shape memory material.

The invention discloses a photochromic core-shell structure organic metal silicon nano composite material and preparation and application thereof, and the composite material is prepared by the following method: under a heating condition, respectively preparing a platinum (II) complex Pt-AP and a spiropyrane derivative SP-AP; the preparation method comprises the following steps: under a room temperature condition, taking tetraethoxysilane as a silicon dioxide precursor, adding Pt-AP into an alkaline solution of ethanol and water, and reacting to obtain core silicon dioxide nanoparticles Pt-SiO2; and then carrying out resuspension, adding a surfactant, SP-AP and tetraethoxysilane, and carrying out a reaction to obtain the photochromic organic metal silicon nano composite material with the core-shell structure. The preparation process is simple, purification is easy, the obtained photochromic composite material and the nanofiber film have reversible response to ultraviolet light and visible light, and the high-performance and multifunctional dynamic optical encryption effect can be achieved.

The present application relates to the technical field of lens mask, especially to a highway LED transparent lens mask and a preparation method thereof, which comprises the following components by weight: 80-90 parts of poly(methyl methacrylate)-b-poly(glycidyl methacrylate) block copolymer (PMMA-b-PGMA); 0.5-2.0 parts of nano-scale cerium-doped zinc oxide (Ce-ZnO) quantum dots; 5-10 parts of random ethylene-methyl acrylate-glycidyl methacrylate terpolymer; 1-3 parts of photochromic spiropyran derivative modified silica nanoparticles; and 1-3 parts of hyperbranched fluorinated polyether. The high light transmittance is ensured, and the active sites are provided through the PGMA block, which is conducive to the uniform dispersion and chemical bonding of other functional components. The nano-scale cerium-doped zinc oxide (Ce-ZnO) quantum dots are introduced to realize efficient ultraviolet blocking and light stability.

This invention relates to the field of functional liquid crystal materials technology, and discloses a method for preparing and applying a spiropyran-based ionic conductive cholesteric phase liquid crystal elastomer with multimodal sensing characteristics. This liquid crystal elastomer is prepared by co-polymerization of a spiropyran derivative as the core unit for photo / thermal / mechanical response with polymerizable liquid crystal monomers, chiral agents, thiol crosslinking agents, ionic liquids, and initiators. Its core mechanism is that the microscopic isomerization of spiropyran molecules is amplified into a change in the mesoscopic polymer arrangement through intermolecular synergistic effects. Simultaneously, relying on the intrinsic conductivity difference between the ionic anthocyanin (MC) and non-ionic spirocyclic (SP) phases, precise control of macroscopic conductivity is achieved. This composite material achieves multiple responses with a single spiropyran component, enabling the construction of multimodal flexible sensors. It addresses the pain points of complex structures and poor compatibility in traditional sensors, and has significant research value in fields such as smart wearables, electronic skin, and healthcare.

The application discloses a visual fluorescent sensor, wherein a support under PMMA is PDMS with a micron-level inverted pyramid structure, and the whole is defined as PDMS / PMMA-Au / SP. The PDMS / PMMA-Au / SP has a structure similar to an insect compound eye, a large specific surface area and low reflectivity, can provide more attachment sites and higher light absorption efficiency for spiropyrans, and helps to improve the fluorescence intensity of the open ring body MC of the spiropyrans. Meanwhile, the electromagnetic field enhancement effect of Au nanoparticles can further improve the fluorescence intensity of the open ring body MC of the spiropyrans. The brand-new PDMS / PMMA-Au / SP fluorescent sensor is successfully applied to trace detection of metal ions.

The application discloses a kind of high impact light-induced discoloration substrate resin formula and its preparation method, it is related to optical resin material technical field, by weight fraction, including the following components: methyl methacrylate 59-65 parts, styrene 29-34.5 parts, carboxyl-containing vinyl monomer 5-10 parts, spiro chromic powder 0.03-0.05 parts, allyl beta-cyclodextrin 1-3 parts, anti-fatigue monomer 2-5 parts, self-repairing monomer 0.1-0.3 parts, N-(4-cyano-3-trifluoromethyl phenyl) methacrylamide 1-3 parts, acrylate-terminated hyperbranched organosilicon modified polyurethane 3-5 parts, cellulose nanocrystal 0.5-1 part, initiator 0.8-1.2 parts.The resin has good impact resistance, good aging resistance, significant photochromic effect, and excellent fatigue resistance.

The invention relates to the technical field of textile fiber preparation, in particular to a preparation method of colorful chitosan-based fluorescent anti-counterfeiting nanofibers. The method comprises the following steps: (1) preparing a spiropyrane (SP) labeled red fluorescent chitosan (CS) solid material SP-CS; (2) preparing a perylene (Perylene) labeled green fluorescent chitosan solid material Perylene-CS (Chlorine Sulfonate); (3) preparing a tetraphenylethylene (TPE) labeled blue fluorescent chitosan (CS) solid material TPE-CS; (4) blending the SP-CS dilute acetic acid solution, the Perylene-CS dilute acetic acid solution, the TPE-CS dilute acetic acid solution and the polyvinyl alcohol (PVA) solution according to different proportions to prepare a spinning solution; and (5) preparing the colorful chitosan-based fluorescent anti-counterfeiting nanofiber through electrostatic spinning. The series of chitosan-based anti-counterfeiting nanofibers prepared by the invention can emit fluorescence in various colors such as orange, yellow, cyan and purple under the excitation of ultraviolet light, the diameter distribution of the fibers is uniform, the surface is smooth, and the average diameter is within the range of 110-150nm.

The invention provides a photochromic multi-point out-of-focus myopia control lens, a preparation method and system thereof, electronic equipment and a medium, and relates to the technical field of intersection of optical devices and additive manufacturing. According to the method, a multi-material ink-jet additive manufacturing process is adopted, a basic optical layer, a composite functional layer (a composite layer of a photochromic functional layer and an optical compensation regulation and control layer) and a distributed out-of-focus microstructure layer are deposited according to preset forming logic, all the functional layers are integrally formed, and interface stress and optical distortion are avoided; wherein the photochromic functional layer contains spiropyrane dye and nano titanium dioxide, rapid response and high weather resistance are achieved, and the optical compensation regulation and control layer has the negative dispersion characteristic and dynamically counteracts focus drift caused by color change. According to the technical scheme of the invention, the problems of out-of-focus structure failure, unstable optical performance and heavy structure caused by refractive index fluctuation in the color changing process of a traditional photochromic lens are solved.

The application belongs to the technical field of electronic display material processing, and specifically discloses a UV double-curing ink and a preparation method thereof.The UV double-curing ink is composed of UV polyester acrylate, polyurethane acrylate containing a spiropyran group, UV modified epoxy acrylate, POSS-acrylate, a mixed solvent, a photoinitiator, an active amine, a leveling agent, pigments and a dispersing agent.The preparation method mainly comprises the following steps: firstly, the UV polyester acrylate, the polyurethane acrylate containing a spiropyran group, the UV modified epoxy acrylate and the POSS-acrylate are respectively subjected to premixing treatment; then, the other components are sequentially subjected to dispersion treatment and functionalization treatment; finally, the mixture obtained by the treatment is subjected to light-shielding storage to obtain the UV double-curing ink.The UV double-curing ink has good leveling property, wettability and bending stress, has the characteristics of high hardness and high adhesion, and can effectively prevent discoloration.

The present application relates to a kind of small molecule probes and its preparation method and application, the chemical structure of the probe is as shown in the following formula: Wherein, R1 is 1-propyl sulfonic acid or 1-butyl sulfonic acid;R2 independently selected from trifluoromethyl or sulfur pentafluoride group, the substitution position of R2 is the ortho, para or meta of hydroxyl on benzene ring;Preparation method is by the condensation reaction of salicylaldehyde containing fluorine substituent group and indoline, directly introduce containing fluorine substituent group into the spiro-pyran molecule structure with pH response, prepared with 19 F MRI and fluorescence imaging pH-responsive bimodal imaging small molecule probe.Compared with the prior art, the small molecule probe of the present application exhibits significantly different 19 F NMR chemical shift and fluorescence intensity, high-resolution 19 F MRI imaging and fluorescence imaging, greatly improve the sensitivity and accuracy of imaging, has important application prospect in the field of biosensing, cell imaging, medical diagnosis etc.

This invention discloses a process and active carrier catalyst for the catalytic synthesis of acetyl empagliflozin. The process utilizes a yeast cell wall-mediated active carrier nickel-phosphorus composite catalyst. The catalyst is activated in a water / glycerol mixed solvent via microwave-ultrasound dual-field synergistic activation, catalyzing the reaction of compound 5 with compound 4 to obtain compound 3. In a supercritical CO2 / ionic liquid system, leveraging the photoisomerization properties of spiropyran-quaternary ammonium iodide, under low-voltage electrocatalysis and UV-Vis switching conditions, the directional glycosylation reaction of compound 3 with compound 2 is achieved to obtain compound 1. This invention utilizes the porous structure and functional groups of the yeast cell wall to stabilize nano-nickel-phosphorus particles, improving catalytic efficiency and reusability. Through the synergistic guiding effect of photoresponsive molecules and ionic liquids, high selectivity of the reaction is achieved. The entire process uses green solvents, and a closed-loop catalyst recovery process is established, offering advantages such as environmental friendliness, low cost, and high product purity.

This invention discloses a method for preparing and applying a dynamic pH / light-responsive bilayer programmable hydrogel, belonging to the field of hydrogel materials technology. The purpose of this invention is to address the problems of existing hydrogel materials, such as single crosslinking structure, irreversible crosslinking, difficulty in simultaneously achieving mechanical and responsive properties, single response mode, and insufficient programmable controllability. The method involves: 1. Preparing a borate ester crosslinked PVA-B-O-PVA hydrogel; 2. Preparing a pH / light-responsive bilayer hydrogel. This hydrogel can achieve swelling regulation through reversible breaking and recombination of borate ester bonds under varying acidic and alkaline conditions. Under light irradiation, it achieves photochromism and deformation response through the SP / MC structural transformation of spiropyran molecules. Furthermore, it achieves bending, folding, and programmable motion behavior through the synergistic effect of different functional layers in the bilayer structure. It can be applied to flexible actuators, programmable soft actuators, and environmental response sensors in complex environments.

The invention discloses a porous SiO2 / TiO2-ZnO composite super-hydrophilic coating and a preparation method thereof, and belongs to the technical field of functional coatings and surface engineering. The preparation method comprises the following steps: carrying out ultrasonic dispersion on anatase type TiO2 and ZnO in a solvent to form a uniform composite dispersion liquid, mixing the uniform composite dispersion liquid with mesoporous SiO2 precursor sol prepared by a template method under an acidic condition, and adding a silane coupling agent and a spiropyrane derivative to carry out an interface bonding reaction to obtain composite sol; the composite sol is applied to the surface of a base material through a coating process, and the composite sol is obtained after drying and curing treatment. According to the coating prepared by the invention, TiO2 and ZnO form a heterojunction to enhance the photo-generated charge separation efficiency, and spiropyrane derivatives are introduced, so that synchronous improvement of efficient photocatalytic self-cleaning and controllable light response repair functions is synergistically realized in a single coating; the coating can be widely applied to the fields of building glass, automobile windows, solar cell cover plates and the like which need self-cleaning, antifogging and surface function maintenance.

The invention discloses a preparation method of a photochromic Raschel blanket. The preparation method comprises the following steps: firstly, preparing a photochromic microcapsule which takes spiropyrane as a core material and takes polyurethane-nano zinc oxide as a composite wall material; a photochromic microcapsule is treated by a silane coupling agent and then fused with polyester master batches to prepare a core layer material, the core layer material and a skin layer material are compounded to form skin-core composite fibers, and the skin-core composite fibers are modified through plasma and alkali treatment; and finally, weaving and shaping the composite fibers serving as wool yarns through a Raschel warp knitting machine. The color change rate of the obtained blanket is smaller than or equal to 3 min, the color fastness to washing is larger than or equal to level 4, the breaking strength in the warp direction is larger than or equal to 350 N, the breaking strength in the weft direction is larger than or equal to 200 N, the color change rate is smaller than or equal to 5 min after ultraviolet aging is conducted for 2000 h, the contrast retention rate is larger than or equal to 80%, and the synergistic improvement of the photochromic function and the use performance is achieved.

The invention relates to the field of fabrics, provides a microcapsule color-changeable functional fabric, and solves the defect that a color-changeable fabric in the prior art is not washable. Which comprises a fabric body coated with a phase change microcapsule, and is characterized in that the phase change microcapsule is provided with a first cavity and a second cavity which are independently distributed at an interval, a photo-thermal double-response color-changing compound is packaged in the first cavity, and a photo-thermal double-response color-changing compound is packaged in the second cavity. The photo-thermal double-response color-changing compound is composed of a spiropyrane photosensitizer and a thermochromic liquid crystal material according to the weight ratio of 1: 1-1: 2, the color-changing response wavelength range of the photo-thermal double-response color-changing compound is 300-700 nm, and the color-changing temperature interval is 20-45 DEG C; and a temperature-adjusting and energy-storing compound is packaged in the second chamber.

The invention relates to the technical field of solar cells, in particular to a photoresponse hole transport composite layer and a preparation method thereof, a perovskite solar cell and a power utilization device, and the photoresponse hole transport composite layer comprises a hole transport layer and a photoresponse molecular layer arranged on the hole transport layer; the hole transport layer is a self-assembled monomolecular layer, and the self-assembled monomolecular layer comprises a self-assembled monomolecular material; the photoresponse molecular layer comprises at least one of an azobenzene derivative and a spiropyrane derivative. The light response molecular layer is arranged on the surface of the hole transport layer, so that reversible adjustment of the wettability of the surface of the hole transport layer before and after deposition of the perovskite absorption layer is realized, and the problem that the hydrophilic and hydrophobic properties of the surface of the hole transport layer before and after deposition of the perovskite absorption layer are not matched is solved.

The present application relates to a kind of organic photochromic material, preparation, high-precision photosensitive resin and its preparation, the organic photochromic material of described yttrium-doped N-hydroxyethyl-3,3-dimethyl-6-nitroindoline spiropyran complex, the organic photochromic material of the present application can quickly, sensitively color change under external light stimulus, and with higher color contrast and reversibility.The dispersion and stability of the high-precision photosensitive resin prepared by the organic photochromic material combined with photosensitive resin are better, can avoid the problems such as fading, phase separation or performance degradation of material during use, also can ensure that photosensitive resin keeps the original high mechanical strength, high resolution and delicacy of printing material after printing, ensure the reliability and durability of printed product in practical application.

This invention relates to a weather-resistant and anti-aging coating for coastal port cranes and its preparation method, belonging to the field of coating materials technology. The coating comprises component A and component B; component A includes an isocyanate-terminated prepolymer, a tri(dibenzoylmethane) ytterbium(III) complex, a spiropyran derivative, and additives; component B is obtained by dissolving isophorone diamine and 2,2'-diaminodiphenyl disulfide in ethyl acetate solvent, with a solid content of 40-60 wt%, and a molar ratio of isophorone diamine to 2,2'-diaminodiphenyl disulfide of (1-4):1; the molar ratio of isocyanate groups in component A to imino groups in component B is (1-1.05):1. This invention accelerates the exchange of dynamic disulfide bonds by constructing a photothermal conversion system, thereby enhancing the coating's ability to dissipate mechanical stress under ultraviolet light irradiation and simultaneously imparting long-term weather resistance to the coating.

The invention discloses a preparation method of a pH-responsive core-shell microsphere emulsion. The preparation method comprises the following steps: S1, preparing a polystyrene emulsion; s2, uniformly mixing a spiropyran monomer, butyl acrylate, dimethylaminoethyl methacrylate, ethylene glycol dimethacrylate, an emulsifier and water to form a pre-emulsion; s3, dropwise adding the pre-emulsion into the polystyrene emulsion according to the mass ratio of the polystyrene emulsion to the pre-emulsion of 1: (0.2-0.5), preserving heat at 65 DEG C for 1 hour, preserving heat at 75 DEG C for 1 hour, preserving heat at 85 DEG C for 4 hours, and cooling to room temperature to obtain the core-shell microsphere emulsion. The core-shell microspheres prepared by the preparation method disclosed by the invention are good in washability and have a wider adjustable pH response range.

The invention relates to the technical field of computer case vibration monitoring, in particular to a computer case vibration monitoring device and method.The computer case vibration monitoring device comprises a box body and a monitor, a mounting counter bore used for fixedly mounting the monitor is formed in the box body, and the monitor comprises a sealing fence and a square box; the sealing fence forms an upper cavity, and a porous silicon dioxide gel layer is arranged in the upper cavity; three sets of colored monitoring tools arranged in the three-dimensional direction are arranged in the square box and used for containing spiropyrane derivatives, ionic liquid carriers and thermochromic microcapsules respectively. A pure mechanical inertia triggering mechanism and a chemical reaction-based color development indicating mechanism are adopted, so that the device can work without external power supply, the monitoring blind area is reduced, and the device is particularly suitable for equipment transportation, storage and power-off maintenance periods; three groups of independent colored monitoring tools are arranged along a spatial three-dimensional orthogonal direction, and different-direction developing bodies are used for carrying out differential dyeing on impact liquid from different directions.

The invention discloses a photochromic fabric sensor and also discloses a preparation method of the sensor, and the preparation method comprises the following steps: preparing a spiropyran compound by using salicylaldehyde and indole; wrapping a spiropyrane compound by using a miniemulsion polymerization method to obtain a photochromic microcapsule dispersion liquid; after the photochromic microcapsule dispersion liquid is diluted, the fabric is soaked in the photochromic microcapsule dispersion liquid, and the photochromic fabric is obtained; the preparation method comprises the following steps: dehydrating polyether polyol, reacting the dehydrated polyether polyol with a hydrophilic monomer, an organic silicon modifier, an organic tin catalyst and diisocyanate to obtain a polyurethane prepolymer, and adding a chain extender and a neutralizer for continuous reaction to obtain an organic silicon modified polyurethane dispersion liquid; and mixing the organic silicon modified polyurethane dispersion liquid with a conductive material, and spraying the mixture on the surface of the photochromic fabric to obtain the photochromic fabric sensor. The preparation method is simple in process and low in cost, and the prepared sensor has the photochromic characteristic and excellent sensing performance.

The application discloses a kind of light-responsive ordered porous membrane materials for cell spontaneous adhesion and detachment and preparation method thereof.The porous membrane material component includes polymer and light-responsive compound spiropyran, and the polymer is at least one of polylactic acid, polystyrene.The preparation method of porous membrane material is as follows: (1) polymer and light-responsive compound are dissolved in solvent; (2) the prepared solution is added dropwise to the surface of substrate, and the substrate is placed on the rotating platform of spin coater; (3) air is introduced into the spin coater, so that the air flow is blown to the solution from directly above the solution, and the air rate introduced, the temperature and relative humidity inside the chamber of spin coater are controlled, while starting the spin coater and controlling its rotating speed; (4) after the solvent is completely volatilized, stop the spin coater rotation, take out the substrate to obtain the ordered porous membrane material.The ordered porous membrane can make cell spontaneous adhesion and spontaneous detachment, so as to improve the success rate and harvest rate of cell culture.