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A technology of nanocrystals and organic crystals, which is applied in the field of preparation of organic nanocrystals, can solve the problems of easy aggregation of particles, difficulty in controlling the size, shape and uniformity, and difficult aggregation, so as to achieve difficult aggregation, reduce solvent embedding and particle Aggregation, lattice integrity effects
Active Publication Date: 2016-05-04
上海多磨新材料科技有限公司 +2
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In addition, this method has a certain degree of universality and is suitable for the growth of periodic nanoarrays of various compounds. However, the size, shape and uniformity of this self-assembled product are not easy to control.
[0010] Due to the small size effect of nanomaterials, the particles are easy to agglomerate. The above-mentioned methods do not have an effective solution to the problem of how to suppress the agglomeration of nanocrystals. Nanocrystals that are not easy to agglomerate are the key problems to be solved in nanomaterials science
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Embodiment 1
[0033] Method for preparing organic nanocrystals
[0034] Take a certain amount of organic crystal raw material and modifier, dissolve the organic crystal raw material and modifier in an organic solvent, and stir evenly. Then the organic crystal-organic solvent-modifier is added dropwise in a certain amount of organic solvent for further dilution. The mixed solution is added dropwise on the heating substrate for evaporation, and the temperature of the heating substrate is close to or higher than the boiling point of the selected organic solvent.
Embodiment 2
[0036] Method for preparing organic nanocrystals
[0037] Take a certain amount of organic crystal raw material and modifier, dissolve the organic crystal raw material and modifier respectively in the same organic solvent, and stir separately. Then the two are mixed, further stirred evenly, and then the mixed liquid is added dropwise on the heating substrate for evaporation, and the temperature of the heating substrate is close to or higher than the boiling point of the selected organic solvent.
Embodiment 3
[0039] Preparation of DAST nanocrystals
[0040] Take 0.01g of DAST and 0.02g of cetyltrimethylammonium bromide (CTAB) into 5ml of anhydrous methanol, and stir at 60°C and 500rad / min for 1.5 hours. Take 0.1ml of DAST-methanol-CTAB at room temperature, add it to 10ml of anhydrous methanol, stir at 1200rad / min for 30s, take 0.05ml of the stirred DAST-methanol-CTAB solution, and evaporate it under the heating substrate at 80 degrees Celsius.
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Abstract
The invention disclose organic nanocrystals. According to the invention, an organic crystal raw material and a modification agent are dissolved in an organic solvent, and the mixture is well mixed by stirring; and the mixed solution is dropped onto a heating substrate for evaporation, such that organic nanocrystals are obtained. The method is called a rapid evaporation method. According to the method, crystal precipitation speed is high and there is no time for polymerization, such that nanocrystals appear, and microcrystal size distribution can be controlled within a range of 1-200 nanometers. Therefore, microcrystals with needed dimensions can be prepared according to actual requirements. With the organic nanocrystal rapid evaporation preparation method, organic crystal production cost is reduced, and organic crystal applications in optoelectronic application fields such as semiconductor manufacturing, optical communication, sensing imaging, sensing measurement, display, solid-state lighting, biomedicine, data storage, solar energy, optical interconnect, organic light-emitting diode, solar photovoltaic device, nano sensing, nano label, nanolithography and the like are expanded.
Description
technical field [0001] The invention relates to a preparation method of organic nano crystals. Background technique [0002] Due to its special size structure, nanomaterials have small size effect, surface effect, quantum size effect and macroscopic quantum dangerous road effect, which are different from conventional materials in terms of force, heat, light, electricity, and electromagnetism. performance. Organic nanomaterials are an important part of nanomaterials. The materials composed of small organic molecules are in the nanoscale range. Due to the unique molecular structure, the properties of organic nanomaterials are strongly different from those of other metals, inorganic non-metals, organic polymers and composites. nanomaterials. In recent years, with the continuous development and progress of science and technology, organic nanomaterials, as a class of materials with novel photoelectric properties, catalytic properties, biological properties and thermodynamic pro...
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