A liquid light-to-heat conversion material and its preparation method and application

A photothermal conversion material, liquid technology, applied in chemical instruments and methods, other chemical processes, photometry using electrical radiation detectors, etc., can solve the problems of wear, inconvenience, poor deformation performance, etc. It has the advantages of great application prospect and simple preparation process.

Active Publication Date: 2021-12-07
RENMIN UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First, when solid materials are used, they are often severely worn or even broken due to poor deformation properties, which not only causes inconvenience in use, but also easily leads to device damage, waste of resources and environmental pollution.
Second, when solid materials are mixed with other materials, they are prone to phase separation due to the "Brazilian bean effect", resulting in poor mixing and doping performance.
Although this method has certain effects, it still cannot completely avoid all the disadvantages of solid materials
On the one hand, the dispersion of this solid in the liquid dilutes the concentration of the photothermal conversion material and reduces the photothermal conversion performance.
On the other hand, during the long circulation in the body, micron and nano-particles are easy to gather in the viscera and capillaries, but it is difficult to reach the diseased area completely, which reduces the long-term effect of photothermal conversion materials for in vivo disease detection and treatment. And these micron and nano particles are difficult to remove through metabolism in the body, which reduces the long-term biocompatibility of the material in vivo
Therefore, the dependence of photothermal conversion materials on the solid-state morphology in terms of material morphology has largely limited the application of photothermal conversion materials in many fields, and the development and preparation of new photothermal conversion materials still face severe challenges.

Method used

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  • A liquid light-to-heat conversion material and its preparation method and application
  • A liquid light-to-heat conversion material and its preparation method and application
  • A liquid light-to-heat conversion material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Smoke iodine respectively (1 second to 1 week, specifically 0 , 1, 3, 6, 12, 24h) oleic acid and ethyl oleate (0.001mL~10 6 mL) to obtain a liquid light-to-heat conversion material with a certain amount of iodine doping (mass percentage of iodine doping is 0.1-1000%, specifically 50%).

[0040] The physical picture of the liquid photothermal conversion material obtained above is as follows: figure 1 shown.

[0041] iodine

[0042] Depend on Figure 2-4 It can be seen that the light absorption wavelength of the liquid photothermal conversion material may be 200-1800 nm.

[0043] Depend on Figure 5It can be known that the viscosity of the liquid light-to-heat conversion material may be 1.0-30.0 mPa·s.

[0044] Depend on Figure 6 It can be seen that the electrical conductivity of the liquid photothermal conversion material can be 0.0001-1 S / m.

Embodiment 2

[0045] Example 2. Preparation and Application of Anti-icing Coating of Small Molecule Liquid Photothermal Conversion Material

[0046] At a certain temperature (0-200°C, specifically 65°C) and iodine vapor pressure (0.01-20kPa, specifically 0.75Pa), smoke iodine with different durations (1 second to 1 week, specifically can be 0, 1, 3, 6, 12, 24h) oleic acid and ethyl oleate were soaked respectively (1 second to 1 week, specifically 0, 1, 3, 6, 12, 24h) with a certain thickness (0.001mm ~ 10cm) substrate, that is, to obtain an anti-icing coating with light-to-heat conversion capability, such as Figure 7 shown. The material has a certain amount of iodine doping (mass percentage of iodine doping is 0.1-1000%, specifically 50%). Substrates for this coating include paper, wood boards, rubber, polydimethylsiloxane (PDMS), Ecoflex products, and more.

[0047] Fluke Tix 660 infrared camera is used to collect CROWNTECH SOLARBEAM-02-3A solar simulator a solar light intensity irradi...

Embodiment 3

[0049] Example 3. Preparation and application of photothermal conversion liquid photothermal conversion material light intensity detector

[0050] Smoked iodine (1 second to 1 week, specifically 0, 1, 3, 6, 12, 24h) ethyl oleate (0.001mL~ 10 6 mL) is packaged in a self-made device to obtain a light intensity detector that can detect light intensity, such as Figure 9 shown. The self-made device includes a display part and a light receiving part. The display part is a tubular object with certain specifications (material: glass, quartz, metal, polymer material, length: 0.001-1000m, outer diameter: 0.001-100cm, inner diameter: 0.001-100cm). The light receiving part is a special bottle with certain specifications (material: glass, quartz, metal, polymer material, length: 0.001-1000m, outer diameter: 0.001-100cm, inner diameter: 0.001-100cm). After the photothermal conversion small molecule liquid black material is exposed to light, the temperature rises, thereby changing the d...

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Abstract

The invention discloses a liquid light-to-heat conversion material, a preparation method and application thereof. The material of the invention is composed of small molecule materials containing unsaturated carbon-carbon double bonds doped with iodine; the mass percentage of iodine doping in the small molecule materials containing unsaturated carbon-carbon double bonds is 0.1-1000%. Its preparation method comprises the steps of the following method (1) or (2): (1) exposing the small molecular material containing unsaturated carbon-carbon double bonds to iodine vapor, and smoking to obtain the product; The small molecular material with saturated carbon-carbon double bond is directly contacted with solid iodine elemental substance, and reacted by heating to obtain that product. The invention is applied in the field of preparing photothermal conversion materials. The invention is simple to prepare, the material is cheap and easy to obtain, the photothermal products can be prepared in batches, the method has wide applicability, and the material form of the material is liquid, which has the unique advantages of liquid materials, such as flexibility, self-healing, doping and biological The long circulation in the body, combined with its photothermal ability, can integrate a variety of functional smart materials.

Description

technical field [0001] The invention relates to a liquid light-to-heat conversion material, a preparation method and application thereof, and belongs to the field of light-to-heat conversion materials. Background technique [0002] Photothermal conversion materials refer to a class of materials that can absorb light and convert it into heat, and have the ability to convert light to heat. Most of them are characterized by black color and have the characteristics of multi-band absorption. They are one of the research focuses in the field of light energy utilization. extensive attention of many researchers. Photothermal conversion can enrich the utilization of light energy and improve the utilization efficiency of light energy. It is one of the forms with the highest utilization rate of light energy at present. It has played a pivotal role in the fields of seawater desalination, analysis and detection, and cancer diagnosis and treatment. At present, the focus and difficulty of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/18G01J1/42
CPCC09K3/18G01J1/42
Inventor 王亚培练晓东王震李睿婷
Owner RENMIN UNIVERSITY OF CHINA
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