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Method for improving light energy utilization rate of photosynthetic pigment by utilizing slow photon effect of photonic crystal

A technology of photonic crystals and photosynthetic pigments, applied in the biological field, can solve problems such as hidden dangers of new gene biological safety and complex operation of methods, and achieve the effects of prolonging interaction time, improving photosynthetic efficiency, and enhancing absorption

Pending Publication Date: 2022-07-12
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Genetic engineering methods are complex to operate, and the biosafety problems caused by the artificial introduction of new genes are an unknown hidden danger
However, no relevant research has been reported so far

Method used

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  • Method for improving light energy utilization rate of photosynthetic pigment by utilizing slow photon effect of photonic crystal
  • Method for improving light energy utilization rate of photosynthetic pigment by utilizing slow photon effect of photonic crystal
  • Method for improving light energy utilization rate of photosynthetic pigment by utilizing slow photon effect of photonic crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This example is used to illustrate the preparation of monodispersed polymethyl methacrylate-butyl acrylate nanoparticles:

[0031] Take 3 mL of methyl methacrylate, 3 mL of butyl acrylate, 0.2 g of acrylamide, 0.2 mL of acrylic acid, 50 μL of ethylene glycol dimethacrylate and 60 mL of ultrapure water and mix them in a 100 mL three-necked flask, stir, and in the case of passing nitrogen The temperature was raised to 90°C. Then, 4 mL of an aqueous solution containing 180 mg of ammonium persulfate and 5 mg of sodium styrene sulfonate was added. The reaction was carried out for 8 h, returned to room temperature, and the obtained nanoparticles were washed three times with ultrapure water. Finally, the nanoparticles were dispersed in 20 mL of ultrapure water.

Embodiment 2

[0033] This example is used to illustrate the preparation of photonic crystal hydrogels:

[0034] Using 1 mL of monodisperse polymethyl methacrylate-butyl acrylate nanoparticle aqueous solution (particle size: 125 nm) as colloidal particles, 50 μL of polyethylene glycol diacrylate as cross-linking agent and 10 μg of 2-hydroxy-4′-(2- Hydroxyethoxy)-2-methyl Propiophenone is a photosensitizer, mixed evenly, shaken until the aqueous solution exhibits a bright structural color, and then irradiated with a 365 nm ultraviolet light source for 3 minutes to prepare a photonic crystal hydrogel. Adjust the volume fraction of colloidal particles to adjust the photonic band gap of the prepared photonic crystal, that is, the reflection peak wavelength. Reflectance spectra and Chlorella pyrenoidosa UV-Vis absorption spectra such as figure 1 shown.

[0035] from figure 1 It can be seen that photonic crystal hydrogels with reflection peaks at 430 nm (blue), 550 nm (green) and 670 nm (red) w...

Embodiment 3

[0037] This example is used to illustrate the preparation of unassembled hydrogels:

[0038] Using 1 mL of monodisperse polymethyl methacrylate-butyl acrylate nanoparticle aqueous solution (particle size: 125 nm) as colloidal particles, 50 μL of polyethylene glycol diacrylate as cross-linking agent and 10 μg of 2-hydroxy-4′-(2- Hydroxyethoxy)-2-methyl Propiophenone is a photosensitizer, mix uniformly, and stir to make the solution appear white. Then, a 365 nm UV light source was irradiated for 3 minutes to form a hydrogel. The nanoparticles in this hydrogel are not assembled in an orderly manner, so they cannot exhibit structural color, which is used as a control for subsequent experiments.

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Abstract

The invention discloses a method for improving the light energy utilization rate of a photosynthetic pigment by utilizing the slow photon effect of a photonic crystal, which is characterized by comprising the following steps of: preparing photonic crystal hydrogel of which the blue edge or red edge of a photonic band gap is matched with the ultraviolet-visible absorption peak of the photosynthetic pigment of algae; and combining algae to the surface of the photonic crystal hydrogel by utilizing electrostatic interaction to form an algae / photonic crystal assembly. By means of the method, the photosynthesis efficiency of the algae plants can be improved by 100%.

Description

technical field [0001] The invention relates to biological technology, in particular to a method for improving the utilization rate of light energy of photosynthetic pigments by utilizing the slow photon effect of photonic crystals. Background technique [0002] Photosynthesis is "the most important chemical reaction on earth", providing the energy and material sources necessary for life activities and maintaining the carbon-oxygen balance of the ecosystem. Improving the efficiency of photosynthesis is conducive to increasing biomass production, accelerating carbon dioxide emission reduction and resource utilization. It is the most direct, effective and environmentally friendly solution to the energy crisis and environmental pollution. The absorption of light energy is a prerequisite and original driving force for photosynthesis, and is a key factor in determining the efficiency of photosynthesis. However, in practice, photosynthetically active radiation, that is, the spect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N13/00C12N1/38C12N1/12C08J3/075C08L33/12C12R1/89
CPCC12N13/00C12N1/38C12N1/12C08J3/075C08J2333/12
Inventor 顾忠泽周鑫
Owner SOUTHEAST UNIV
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