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Temperature control supramolecular light capture system and preparation method and application thereof

A light-harvesting and supramolecular technology, which is applied in the preparation of carboxylic acid amides, chemical instruments and methods, and the preparation of organic compounds, can solve the problems of photosynthetic rate decline and affect the light-harvesting mechanism, and achieve high energy transfer efficiency and antenna effect Effect

Active Publication Date: 2021-06-25
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High temperature also affects the light-harvesting mechanism of LHC II connected to the grana region
The combined effect of these factors will inevitably lead to a sharp decline in photosynthetic rate.
However, no temperature-responsive artificial light-harvesting system that mimics this mechanism has yet emerged.

Method used

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  • Temperature control supramolecular light capture system and preparation method and application thereof
  • Temperature control supramolecular light capture system and preparation method and application thereof
  • Temperature control supramolecular light capture system and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Synthesis of P1: in N 2 Under protection, add DMAP and the DCM solution of compound A to the flask, ice bath, then add the DCM solution of compound B dropwise, add dropwise Et 3 N, the reaction was stirred overnight at room temperature. After the reaction is complete, stop stirring, add 1M HCl to wash, wash with water, wash with saturated NaCl aqueous solution, combine organic phases, anhydrous MgSO 4 Drying, spin-drying with a rotary evaporator, column chromatography, collecting the spin-dried product to obtain solid powder P1, the yield is 98%. The NMR characterization of compound P1 is shown in the attached figure 2 As shown, the high-resolution mass spectrometry characterization is shown in the attached image 3 shown.

[0044] (2) P1 molecules self-assemble in distilled water driven by hydrophilic-hydrophobic interactions. The critical aggregation concentration of P1 was determined to be 132 μM by light transmittance experiments, and P1 assembled into a sph...

Embodiment 2

[0049] Step (1), step (2) and step (3) are identical with embodiment 1.

[0050] (4) Prepare a 1mM aqueous solution of P1, use ultrasonic method to load NiR, prepare a donor-acceptor solution with D / A=200:1, measure the fluorescence spectrum, and obtain Φ ET 80%, AE=61.

[0051] (5) Prepare a 1 mM aqueous solution of P1, use ultrasonic method to load NiR, prepare a donor-receptor solution with D / A=200:1, and catalyze the C-H alkylation reaction. The conversion and yield are 93% and 90%, respectively. When the temperature of the system was raised to 48°C, the solution became turbid. At this time, the conversion rate and yield dropped to 31% and 4%, respectively. The temperature increase successfully inhibited the catalytic channel, hindered the transformation of light energy into chemical energy, and realized the advanced level of photosynthesis. Bionic.

Embodiment 3

[0053] Step (1), step (2) and step (3) are identical with embodiment 1.

[0054] (4) Prepare the 1mM aqueous solution of P1, use ultrasonic method to load NiR, prepare the donor-acceptor solution of D / A=500:1, measure the fluorescence spectrum, get Φ ET 60%, AE=78.

[0055] (5) Prepare a 1 mM aqueous solution of P1, use ultrasonic method to load NiR, prepare a donor-receptor solution with D / A=500:1, and catalyze the C-H alkylation reaction, and the conversion and yield are 90% and 86%, respectively. When the temperature of the system was raised to 48°C, the solution became turbid. At this time, the conversion rate and yield dropped to 20% and 3%, respectively. The temperature increase successfully inhibited the catalytic channel, hindered the transformation of light energy into chemical energy, and realized the advanced level of photosynthesis. Bionic.

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Abstract

The invention belongs to the field of supramolecular light materials, and provides a temperature control supramolecular light capture system and a preparation method and application thereof. The system is based on supermolecule self-assembly of a P1 molecule, comprises a hydrophobic end and a hydrophilic end with temperature response, is an amphiphilic molecule, can generate self-assembly in a water phase, and also can respond to temperature. The system comprehensively simulates the influence of air temperature on photosynthesis; the assembly can load an energy receptor, an antenna ratio D / A can reach 1000 / 1, and the energy transfer efficiency and the antenna effect are both high; a light capture system constructed by the P1 can be applied to a photocatalytic reaction, light energy is converted into chemical energy, opening and closing of a catalytic channel can be controlled by utilizing temperature, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the field of supramolecular optical materials, and in particular relates to an artificial temperature-controlled supramolecular light capture system for simulating photosynthesis, a preparation method and application thereof. Background technique [0002] The increasingly serious energy crisis has become the core issue restricting the sustainable development of today's human society. As a substitute for fossil fuels, solar energy has incomparable advantages. Photosynthesis is one of the most important photochemical events in nature. It is not only the basis for the survival of life, but also the most effective way to convert solar energy in nature. In the process of photosynthesis, solar energy is first absorbed, then transferred to the reaction center, and finally converted into chemical energy by the reaction center. In the process of energy transfer, the antenna pigment complex (the complex of chlorophyll, carotene, etc. an...

Claims

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Application Information

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IPC IPC(8): C07C235/48C07C231/02C09K11/06B01J31/02B01J35/00
CPCC07C235/48C09K11/06B01J31/0247B01J31/0235C07C2603/18B01J2231/46C09K2211/1011C09K2211/1014C09K2211/1007B01J35/39
Inventor 肖唐鑫邓云王欣杜纯阳吴可慧李正义孙小强
Owner CHANGZHOU UNIV
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