WO2023236286A1 - Plante électroluminescente et son procédé de préparation - Google Patents

Plante électroluminescente et son procédé de préparation Download PDF

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Publication number
WO2023236286A1
WO2023236286A1 PCT/CN2022/102829 CN2022102829W WO2023236286A1 WO 2023236286 A1 WO2023236286 A1 WO 2023236286A1 CN 2022102829 W CN2022102829 W CN 2022102829W WO 2023236286 A1 WO2023236286 A1 WO 2023236286A1
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WO
WIPO (PCT)
Prior art keywords
long afterglow
afterglow material
plant
preparation
intermediate product
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PCT/CN2022/102829
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English (en)
Chinese (zh)
Inventor
高翔
郭明明
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中国科学院深圳先进技术研究院
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Publication of WO2023236286A1 publication Critical patent/WO2023236286A1/fr

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00—Cultivation of specific crops or plants not otherwise provided for
    • A01G22/60—Flowers; Ornamental plants
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G7/00—Botany in general
    • A01G7/04—Electric or magnetic or acoustic treatment of plants for promoting growth
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G7/00—Botany in general
    • A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media

Definitions

  • the present invention relates to the field of bioluminescence technology, and in particular to a luminescent plant and a preparation method thereof.
  • the sunlight in nature limits plant photosynthesis to only occur during the day, which greatly reduces the photosynthetic efficiency of the plant itself. Due to its important application value to nature and human development, research on improving plant photosynthesis has been continuously developed and Enhancement, providing plants with a stronger light source is an important method to improve plant photosynthesis. Increasing the light intensity and extending the time for plants to perform photosynthesis can improve the efficiency of photosynthesis of plants. Plants that can emit light can solve the problem of plants being unable to perform photosynthesis in the dark.
  • the method of genetically engineering luciferase is commonly used to prepare luminous plants.
  • this method requires injecting luciferin into the plant to emit light.
  • the plant's own energy is consumed, which reduces the efficiency of photosynthesis of plants to synthesize organic matter. .
  • luminescent plants need to absorb luciferin or other substances that can make them luminous to achieve the purpose of luminescence.
  • the substances are easily affected by external factors such as temperature, pressure, and light. And it is relatively fragile and easily loses activity after changes in the external environment, resulting in fluorescence quenching.
  • luminescent plants can only be prepared in the laboratory and are difficult to promote on the market.
  • these existing technologies can only prepare luminous flowers, and the luminous flowers can only emit light of a single color. It is difficult to prepare a whole plant that can emit light of multiple colors.
  • embodiments of the present invention provide a luminescent plant and a preparation method thereof to solve the problem in related technologies that preparing luminescent plants requires consuming the energy of the plant itself, which reduces the photosynthesis efficiency of the plant and cannot produce multiple colors of luminescent plants. Plant problems.
  • the long afterglow material can store light energy and is ground and placed on the plant leaves.
  • the long afterglow material can absorb natural light during the day and store it.
  • the long-afterglow material can release stored light energy. This process allows the plant to emit light of different colors in a dark environment without consuming the plant's own energy, and allows the plant to perform photosynthesis.
  • one aspect of the present invention provides a preparation method of luminescent plants, including the following steps:
  • step S3 also includes determining the concentration of the long afterglow material in the intermediate product, and the specific steps are:
  • the plant According to the growth status of the plant, further determine the appropriate concentration of the long afterglow material in the intermediate product, for example, by detecting the absorbance value of the plant to determine the growth status of the plant.
  • step S3 the specific operations of the method for producing the intermediate product in step S3 include:
  • the ground long afterglow material is loaded into microneedles to obtain an intermediate product.
  • step S3 when dissolving the ground long afterglow material in water in step S3, it also includes hydrophilic modification of the long afterglow material. Since the long afterglow material has poor water solubility, it needs to be hydrophilically modified to improve the solubility of the long afterglow material.
  • step S3 specifically includes the following steps:
  • S22 Grind the long afterglow material of appropriate size twice to finally obtain the ground long afterglow material with the required particle size.
  • the first grinding is to change the long afterglow material from large pieces to small pieces. At this time, it is ground manually using a mortar, and the particle size is uneven; the second grinding is done using a machine ball mill, and the particle size is smaller after grinding. , more uniform.
  • step S1 also includes the following steps:
  • long afterglow materials that can emit light of different colors are prepared by changing the elements doped in the long afterglow material, the amount of the doping elements, the reaction temperature or the reaction time. By placing the long afterglow material that can emit light of different colors on plant leaves, luminous plants that emit light of different colors can be prepared to increase their ornamental value.
  • the method for preparing the intermediate product in step S3 is to co-cross-link the ground long afterglow material with hydrogel, dope it into the raw material of electrospinning, or load it into microfibers.
  • the needle plan also includes the following steps:
  • the intermediate products are prepared into different shapes and placed on the plant leaves. Therefore, it can be designed into various shapes according to personal preferences, so that the plants modified with the long afterglow material can emit light of a specific shape and color at night, thereby enhancing the ornamental value.
  • step S3 or S4 includes: spraying, smearing, gluing, wrapping on plant leaves or injecting into plants.
  • steps S3 and S4 can be replaced by placing the ground long afterglow material directly on the plant leaves.
  • a luminous plant is prepared by the above preparation method of a luminous plant, and is characterized in that it includes: plant leaves and long afterglow materials placed on the plant leaves.
  • the long afterglow materials can store light energy and release light energy when the plants are in a dark environment. This process does not require energy consumption.
  • the long afterglow material used in the present invention has stable performance and is not affected by changes in the external environment, greatly improving the efficiency of plant photosynthesis.
  • the present invention prepares luminescent plants that can emit light of multiple colors by changing the doped elements and the amount of doped elements, reaction temperature or reaction time in the long afterglow material, thereby improving its ornamental value.
  • the intermediate product containing long afterglow material in the present invention can be prepared into different shapes according to people's subjective consciousness, matched with different shapes and colors, and can be customized according to people's requirements.
  • the long afterglow material used in the present invention can emit light repeatedly, and the light intensity and color can be adjusted according to needs for color matching.
  • the luminous plants prepared by the present invention can replace light sources in daily life and achieve the purpose of saving electric energy.
  • the present invention directly transforms plants, is simple to operate, does not require high technical requirements for operators, is simple to prepare long-lasting afterglow materials, has low raw material costs, can be mass-produced, and is easy to promote on the market.
  • Figure 1 is a flow chart for the preparation of a night-light emitting plant device in an embodiment of the present invention
  • Figure 2 is a luminous plant modified with a blue long afterglow material in an embodiment of the present invention. It emits blue light in a dark environment after being irradiated with sunlight for 5 minutes;
  • (B) is a luminous plant modified with a red long afterglow material in an embodiment of the present invention. , emits red light in a dark environment after being irradiated with sunlight for 5 minutes;
  • (C) is a luminous plant modified by blue and red long afterglow materials in the embodiment of the present invention, and emits blue light and red light alternately in a dark environment after being irradiated with sunlight for 5 minutes.
  • Figure 3 shows the increased oxygen production in the dark after being excited by sunlight for different concentrations of long afterglow materials in embodiments of the present invention; (B) shows the increased oxygen production of long afterglow materials at different concentrations after being excited by sunlight in embodiments of the present invention.
  • the plant provides light source, and the plant's oxygen production curve within 50 minutes.
  • Figure 4 shows the toxicity test of different concentrations of long afterglow materials to single-cell organisms in the embodiment of the present invention.
  • Embodiments of the present invention provide a luminescent plant and a preparation method thereof, which can solve the problem in related technologies that preparing luminous plants requires consuming the energy of the plant itself, reducing the photosynthesis efficiency of the plant, and being unable to prepare luminescent plants of multiple colors.
  • an embodiment of the present invention provides a method for preparing luminescent plants, which specifically includes:
  • the long afterglow material is prepared by high temperature solid phase method, sol-gel method, hydrothermal method, co-precipitation method or microwave radiation method.
  • the doping elements include europium, neodymium, praseodymium and other elements.
  • the particle size of the long afterglow material can be changed by grinding. The longer the grinding time, the smaller the particle size and the lower the brightness.
  • the specific steps of grinding also include:
  • the range of the abrasive particle size is: 1 to 1000 microns.
  • steps S3 and S4 the ground long afterglow material and the carrier are combined into an intermediate product, and placed on the plant leaves.
  • the specific operations are:
  • Dissolve the ground long afterglow material in water put it into a watering can, and spray it on the plant leaves.
  • Add the ground long afterglow material that can produce different colors of light into the solution, and add it to the solution.
  • the plant leaves are covered with a covering. The unblocked area is of a specific shape. Then the leaves are sprayed with a solution containing a ground long afterglow material that can produce different colors of light. After the covering is removed, different colors can be produced. , glowing plants of different shapes.
  • the specific steps include:
  • the grinding size range of the long afterglow material in this embodiment is: 0.1 to 1000 microns;
  • the preferred concentration range of the long afterglow material in this embodiment is: 10 to 500 mg/mL.
  • the long afterglow material has poor water solubility, so it is modified with polyethylene glycol or diethylene glycol.
  • the silicon oxide coating performs hydrophilic modification on the long afterglow material and improves the solubility of the long afterglow material in water.
  • hydrophilic modification can be modified with polyethylene glycol in one scheme: the long afterglow material is mixed and stirred with 50mL of 5mM sodium hydroxide solution for 24 hours to obtain an aminated long afterglow material, which is then mixed with 450-900 mg of Mix N-hydroxysuccinimide and 1-ethyl-(3-dimethylaminopropyl)carbodiimide and stir at 90°C overnight;
  • silica weigh 0.1 to 0.5 g of cetyltrimethylammonium bromide and dissolve it in 20 mL of deionized water, and heat it to 80°C to dissolve it. Add the long afterglow material to the above solution and stir vigorously overnight. Add 3 to 30 mL of absolute ethanol and 2 to 6 M sodium hydroxide solution, heat to 70 to 90°C, and stir. Add 100 to 300 microliters of tetraethyl orthosilicate and stir for 2 to 6 hours.
  • the plants modified with the long afterglow material can be used for ornamental purposes.
  • the long afterglow material can be prepared in a variety of colors and shapes, and can be loaded onto a variety of carriers to modify the plants.
  • the shape of the carrier can also be Editor, it can be designed into a variety of shapes according to personal preferences, so that the plants modified with the long afterglow material emit light of a specific shape and color at night.
  • the synthesis method of the long afterglow material can be changed or the prepared long afterglow material can be modified and prepared into different shapes.
  • the plants modified with the long afterglow material can be used for night lighting.
  • the long afterglow material absorbs and stores sunlight during the day and releases it at night. If the trees on the roadside are modified with the long afterglow material, the plants modified with the long afterglow material release light energy at night and can be used as fluorescent trees to provide night lighting.
  • the specific steps include:
  • the grinding size range of the long afterglow material in this embodiment is: 0.1 to 1000 microns;
  • the preferred concentration range of the long afterglow material in this embodiment is: 10 to 500 mg/mL.
  • the ground long afterglow material is co-cross-linked with hydrogel and placed on plant leaves.
  • ground materials that can produce different colors of light are added to the hydrogel.
  • the long afterglow material is a mixture of hydrogel and long afterglow material that is directly applied on plant leaves into different shapes. After cross-linking, luminous plants with different colors and shapes are obtained.
  • the specific steps include:
  • Photo-cross-linked gel is a substance that undergoes cross-linking under strong light stimulation, and then changes from solution to gel-like, such as photo-cross-linked hydrogel CMC-CNB/CMCh/PEG-4Mal and HA -CNB/CMCh/PEG-4Ma, etc.;
  • the preferred concentration range of the long afterglow material in this embodiment is: 10 to 500 mg/mL.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the ground long afterglow material is doped into the raw material of electrospinning.
  • Any long afterglow textile material that can emit light can be prepared using electrospinning, and placed on plant leaves to customize a suitable luminous sleeve for the plant.
  • grinding long afterglow materials that can produce different colors of light are added to the electrospinning raw materials, and the electrospinning materials are made into different shapes and placed on plant leaves to produce different colors and different colors. Shape of glowing plant.
  • the grinding size range of the long afterglow material in this embodiment is: 0.1 to 1000 microns;
  • the ground long afterglow material is loaded into microneedles.
  • the tips of the microneedles are very small and will not cause damage to the plants.
  • the microneedles can be directly attached to the plant leaves to emit light.
  • the microneedles can absorb the long afterglow.
  • the material is delivered to the plants.
  • long afterglow materials that can produce different colors of light are added to the microneedles.
  • the microneedle backing layer can be made into different shapes, and can also be used as long afterglow microneedles of different shapes. Needles are attached to plant leaves to produce luminous plants of different colors and shapes.
  • the microneedles are squares with a size of 1-100cm, for example, the size of the microneedles is 2 ⁇ 2cm.
  • the specific steps include:
  • the grinding size range of the long afterglow material in this embodiment is: 0.1 to 1000 microns;
  • the preferred concentration range of the long afterglow material in this embodiment is: 10 to 500 mg/mL.
  • Embodiment 6 is a diagrammatic representation of Embodiment 6
  • steps S3 and S4 can also be omitted in this embodiment, and the ground long afterglow material is directly placed on the plant leaves. Other steps are the same as in Embodiment 1.
  • Embodiment 7 is a diagrammatic representation of Embodiment 7:
  • luminescent plants that can emit light of different colors are obtained.
  • the following proves from the perspectives of light intensity, oxygen production and absorbance that the luminescent plants prepared by the above preparation process have high photosynthesis efficiency and strong ornamental value.
  • the light intensity of the plants modified with the long afterglow material was measured.
  • the luminescent plant modified with the blue long afterglow material emits blue light in a dark environment after being exposed to sunlight for 5 minutes.
  • Figure 3 (B) shows a luminous plant modified with red long afterglow materials. It emits red light in a dark environment after being exposed to sunlight for 5 minutes
  • Figure 3 (C) shows a luminous plant modified with blue and red long afterglow materials. , it emits blue light and red light alternately in a dark environment after being exposed to sunlight for 5 minutes.
  • the oxygen production and organic matter production of the plants modified with the long afterglow material were measured.
  • the abscissa is the concentration of the long afterglow material
  • the ordinate is the concentration of the afterglow material in sunlight. From the increased oxygen production in the dark after excitation, it can be seen that different concentrations of long afterglow materials increase the oxygen production of plants in the dark; in Figure 3(B), the abscissa is time, and the ordinate is the oxygen production of plants. It can be seen that different concentrations of long afterglow materials provide light sources for plants after being excited by sunlight, and the oxygen production of plants increases within 50 minutes. It can be seen from the figure that the long afterglow material can increase the oxygen production of plants, and it can be judged that the long afterglow material can improve the ability of plants to synthesize organic matter.
  • the toxicity of the long afterglow material to single-cell biological cyanobacteria was detected.
  • the abscissa is the number of days, and the ordinate is the absorbance at 730nm.
  • Long afterglow materials of different concentrations are added to the initial OD.
  • the optimal concentration of long afterglow materials for preparing luminous plants can be inferred.
  • the OD value is a parameter that characterizes the number of bacteria. The higher the value, the greater the number of bacteria and the better the growth. It can be seen from the figure that the long afterglow material has very little toxicity and has almost no impact on the growth of cyanobacteria. Therefore, the long afterglow material can be directly modified onto plant leaves without causing damage to the growth of the plant.
  • adding long afterglow materials of different qualities can increase the sucrose production of cyanobacteria at 48 hours and 72 hours. Therefore, long afterglow materials promote cyanobacteria to directly use carbon dioxide to synthesize sucrose. It can be inferred that long-afterglow materials can improve the photosynthesis of plants, improve the efficiency of plants in utilizing carbon dioxide, and increase the accumulation of organic matter.

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  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Botany (AREA)
  • Environmental Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Cultivation Of Plants (AREA)

Abstract

Une plante électroluminescente et son procédé de préparation sont divulgués. Le procédé de préparation comprend principalement les étapes suivantes consistant à : tout d'abord, préparer un matériau à rémanence longue; broyer le matériau à rémanence longue pour obtenir un matériau à rémanence longue broyé, et combiner le matériau à rémanence longue broyé avec un excipient pour préparer un produit intermédiaire; et enfin placer le produit intermédiaire sur les feuilles de plante; ou placer directement le matériau à rémanence longue broyé sur les feuilles de plante. La plante électroluminescente n'a pas besoin de consommer l'énergie de la plante elle-même pendant le processus d'électroluminescence, ce qui peut améliorer considérablement l'efficacité de synthèse de matière organique dans le cadre de la photosynthèse. De plus, la plante électroluminescente peut émettre de la lumière de différentes couleurs et formes, ce qui est ornemental, et peut également remplacer les sources de lumière utilisées dans la vie, ce qui permet d'atteindre le but consistant à économiser de l'énergie électrique.
PCT/CN2022/102829 2022-06-09 2022-06-30 Plante électroluminescente et son procédé de préparation WO2023236286A1 (fr)

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CN202210648578.2A CN117243015A (zh) 2022-06-09 2022-06-09 一种发光植物及其制备方法

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1833886A (zh) * 2006-04-02 2006-09-20 蒋和卿 夜光花卉及夜光盆景
JP3128920U (ja) * 2006-10-23 2007-02-01 株式会社アッセイ 夜光花
WO2013113061A1 (fr) * 2012-01-31 2013-08-08 Bioconst Pty Ltd Composition fluorescente pour utilisation dans le marquage d'objets, tels que des fleurs
CN205694513U (zh) * 2016-03-29 2016-11-23 中科和素（天津）医药科技有限公司 一种夜明花结构
CN111484695A (zh) * 2020-03-06 2020-08-04 上海交通大学 荧光共轭聚合物纳米颗粒、制备方法及在光转化中的应用
IN202241024708A (fr) * 2022-04-27 2022-05-13

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Publication number Priority date Publication date Assignee Title
CN1833886A (zh) * 2006-04-02 2006-09-20 蒋和卿 夜光花卉及夜光盆景
JP3128920U (ja) * 2006-10-23 2007-02-01 株式会社アッセイ 夜光花
WO2013113061A1 (fr) * 2012-01-31 2013-08-08 Bioconst Pty Ltd Composition fluorescente pour utilisation dans le marquage d'objets, tels que des fleurs
CN205694513U (zh) * 2016-03-29 2016-11-23 中科和素（天津）医药科技有限公司 一种夜明花结构
CN111484695A (zh) * 2020-03-06 2020-08-04 上海交通大学 荧光共轭聚合物纳米颗粒、制备方法及在光转化中的应用
IN202241024708A (fr) * 2022-04-27 2022-05-13

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