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Nanocrystalline-ligand compound, preparation method of nanocrystalline-ligand compound, printing material and use of printing material

A technology for printing materials and nanocrystals, which can be used in replication/marking methods, printing, luminescent materials, etc., can solve the problems of poor solubility of nanocrystal-ligand complexes, improve physicochemical properties and optoelectronic properties, and increase solubility. , the effect of improving stability and processability

Active Publication Date: 2016-10-05
NANJING TECH CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a kind of nanocrystal-ligand complex, its preparation method, printing material and the application of printing material, to solve the problem of poor solubility of nanocrystal-ligand complex in the prior art

Method used

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  • Nanocrystalline-ligand compound, preparation method of nanocrystalline-ligand compound, printing material and use of printing material
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  • Nanocrystalline-ligand compound, preparation method of nanocrystalline-ligand compound, printing material and use of printing material

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preparation example Construction

[0054] In addition, the present invention also provides a method for preparing a nanocrystal-ligand complex, which includes: performing ligand exchange between nanoparticles and entropic ligands to form a nanocrystal-ligand complex.

[0055] In the preparation method provided by the present invention, the entropy ligand used is different from the traditional linear ligand, which has a branched chain structure, and the total number of main chain skeleton atoms and branch chain skeleton atoms is ≤30. This entropy ligand can effectively inhibit the interaction between nanoparticles and nanoparticles in the solution, and because the C-Cσ bond on it can rotate freely, it can effectively increase the solubility of nanoparticles in the solvent, thereby effectively inhibiting the The coagulation phenomenon of nanoparticles in the solvent greatly improves the stability and processability of the nanoparticle colloidal solution. In addition, due to the small molecular weight and short ch...

Embodiment 1

[0072] Preparation method of quantum dot CdSe modified by entropy ligand (I) 2-ethylhexanethiol

[0073] Taking 2.9nm CdSe quantum dots as an example, 1) take 2ml of 2.9nm CdSe quantum dots in toluene solution (optical density OD=20), add about 0.10g of 2-ethyl hexanethiol, place it on a heating platform, and heat up to 70°C, stirred and reacted for 1 hour; 2) Cool down to room temperature, add about 10ml of ethanol, centrifuge at 4900rpm for 3min, collect the CdSe quantum dot precipitate, and remove unreacted 2-ethylhexanethiol; 3) Dissolve the precipitate in 2ml Add 0.05g of 2-ethylhexyl mercaptan to toluene, put it on a heating platform, raise the temperature to 70°C, and stir for 1 hour; 4) Add about 10ml of ethanol, centrifuge at 4900rpm for 3min, collect the CdSe quantum dot precipitate, and remove Unreacted 2-ethylhexanethiol was redissolved in 2ml of toluene. By detecting its UV-vis absorption spectrum, measure the solubility of quantum dot CdSe according to the absor...

Embodiment 2

[0075] Preparation method of quantum dot CdSe modified by entropy ligand (II) 3-methyl-1-pentene-1-thiol

[0076] Taking 2.9nm CdSe quantum dots as an example, 1) Take 2ml of toluene solution (optical density OD=20) of 2.9nm CdSe quantum dots, add about 0.10g of 3-methyl-1-pentene-1-thiol, place On a heating platform, raise the temperature to 70°C, stir and react for 1 hour; 2) Cool down to room temperature, add about 10ml of ethanol, centrifuge at 4900rpm for 3min, collect the CdSe quantum dot precipitate, and remove unreacted 3-methyl-1-pentane ene-1-thiol; 3) Dissolve the precipitate in 2ml of toluene, add 0.05g of 3-methyl-1-pentene-1-thiol, place it on a heating platform, raise the temperature to 70°C, and stir for 1 hour ; 4) Add about 10ml of ethanol, centrifuge at 4900rpm for 3min, collect the CdSe quantum dot precipitate, remove unreacted 3-methyl-1-pentene-1-thiol, and redissolve in 2ml of toluene. By detecting its UV-vis absorption spectrum, measure the solubility ...

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Abstract

The invention provides a nano crystal-ligand complex, a preparation method thereof, a printing material and an application of the printing material. The nanocrystal-ligand complex includes nanoparticles and entropy ligands that form surface coordination with the nanoparticles; wherein, the entropy ligands have a branched chain structure, and the total number of main chain skeleton atoms and branch chain skeleton atoms is ≤ 30. In the above-mentioned nanocrystal-ligand complex, the entropy ligand used is different from the traditional linear ligand, which has a branched chain structure, and the total number of main chain skeleton atoms and branch chain skeleton atoms is ≤30. This entropy ligand can effectively inhibit the interaction between nanoparticles and nanoparticles in the solution, and because the C-Cσ bond on it can rotate freely, it can effectively increase the solubility of nanoparticles in the solvent, thereby effectively inhibiting the The coagulation and precipitation of nanoparticles in the solvent greatly improves the stability and processability of the nanoparticle colloidal solution, which is more suitable for application in printing materials.

Description

technical field [0001] The invention relates to the field of preparation of nanocrystal-ligand complexes, in particular, to a nanocrystal-ligand complex, a preparation method thereof, printing materials and applications of printing materials. Background technique [0002] Nanocrystal-ligand complexes are a class of nanomaterials that are synthesized and dispersed in solution. Due to the size of the particles at the nanoscale (1-100 nm), the physicochemical properties of these particles are very different from their corresponding bulk materials. In the past, the research on this system was still at an empirical level, which limited people's understanding of the basic properties of the nanocrystal-ligand complex itself and its commercial application. [0003] In the colloidal solution of nanoparticles, if there is no protection on the surface of the nanoparticles, these nanoparticles will tend to agglomerate, and the colloidal solution is in an unstable state and lacks resear...

Claims

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Application Information

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IPC IPC(8): C09K11/88C09K11/58C09K11/02B41M5/50H01L51/00G09F3/02
Inventor 彭笑刚杨钰付涛陈小朋高静赵飞
Owner NANJING TECH CORP LTD
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