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A kind of size-controllable Schiff base polymer nanoparticle and its preparation method

A Schiff base and nanoparticle technology, which is applied in the field of size-controllable Schiff base polymer nanoparticles and their preparation, and achieves the effects of easy separation and purification, mild and easy control of the reaction process, and improved purity.

Active Publication Date: 2020-04-28
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although there are related reports on the synthesis method of Schiff base polymer nanoparticles, the synthesis of Schiff base polymer nanoparticles with a particle size of about 200 nm or even less than 200 nm is still a difficult and huge challenge in this field.

Method used

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  • A kind of size-controllable Schiff base polymer nanoparticle and its preparation method
  • A kind of size-controllable Schiff base polymer nanoparticle and its preparation method

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Effect test

Embodiment 1

[0037] A size-controllable Schiff base polymer nanoparticle is prepared by reacting 2,6-diaminopyridine and formalin through a Schiff base; wherein, the content of formaldehyde in 2,6-diaminopyridine and formalin The molar ratio is 1:2; the concentration of formaldehyde in formalin is 37wt%; the particle size of the size-controllable Schiff base polymer nanoparticles is 120nm;

[0038] The size-controllable Schiff base polymer nanoparticles are prepared by the following steps:

[0039] S1. Put 0.15g 2,6-diaminopyridine into the reactor, add 300ml deionized water, seal the reactor, stir and dissolve, add 0.225g formalin after the 2,6-diaminopyridine dissolves, Continue to seal the reactor, stir and react at 20°C for 18h to obtain the mixed material;

[0040] S2. After centrifuging the mixed material, pour off the supernatant, wash twice with water, wash once with methanol, purify with methanol for 60 hours using a Soxhlet extractor, and dry to obtain size-controllable Schiff b...

Embodiment 2

[0043] A size-controllable Schiff base polymer nanoparticle is prepared by reacting 2,6-diaminopyridine and formalin through a Schiff base; wherein, the content of formaldehyde in 2,6-diaminopyridine and formalin The molar ratio is 1:18; the concentration of formaldehyde in formalin is 37wt%; the particle size of the prepared size-controllable Schiff base polymer nanoparticles is 2000nm;

[0044] The size-controllable Schiff base polymer nanoparticles are prepared by the following steps:

[0045] S1. Put 0.15g 2,6-diaminopyridine into the reactor, add 300ml deionized water, seal the reactor, stir and dissolve, add 0.25g formalin after the 2,6-diaminopyridine dissolves, Continue to seal the reactor, stir at 25°C for 30min, put it into an autoclave and react at 120°C for 16h to obtain the mixed material;

[0046] S2. After centrifuging the mixed material, pour off the supernatant, wash twice with water, wash once with methanol, use a Soxhlet extractor to purify with methanol fo...

Embodiment 3

[0048] A size-controllable Schiff base polymer nanoparticle is prepared by reacting 2,6-diaminopyridine and formalin through a Schiff base; wherein, the content of formaldehyde in 2,6-diaminopyridine and formalin The molar ratio is 1:2; the particle size of the size-controllable Schiff base polymer nanoparticles is 150nm; the concentration of formaldehyde in formalin is 40wt%

[0049] The size-controllable Schiff base polymer nanoparticles are prepared by the following steps:

[0050] S1. Put 0.15g of 2,6-diaminopyridine into the reactor, add 300ml of deionized water, seal the reactor, stir and dissolve, add 0.206g of formalin after the 2,6-diaminopyridine is dissolved, and continue Seal the reactor, stir at 25°C for 1h, put it into an autoclave and react at 60°C for 18h to obtain the mixed material;

[0051] S2. Centrifuge the mixed material, discard the supernatant, wash twice with water, wash once with methanol, purify with methanol for 72 hours using a Soxhlet extractor, ...

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Abstract

The invention discloses a size-controllable Schiff base-type polymer nano-particle, which is prepared through a Schiff base reaction to 2,6-diaminopyridine and formalin, wherein molar ratio of the 2,6-diaminopyridine to formaldehyde in the formalin is 1:2-18. The invention also provides a preparation method of the size-controllable Schiff base-type polymer nano-particle with the 2,6-diaminopyridine and formalin as raw materials. The particle size of the size-controllable Schiff base-type polymer nano-particle can reach 120 nm to lowest. The preparation method is simple and environment-friendly and is carried out entirely in deionized water, has mild and easy-to-control reaction conditions, saves production cost and is easy to carry out in industrial production.

Description

technical field [0001] The invention relates to the technical field of Schiff base nanoparticles, in particular to a size-controllable Schiff base polymer nanoparticle and a preparation method thereof. Background technique [0002] Schiff bases are a class of organic compounds containing imine or imine-substituted characteristic groups, which have diverse structures and good coordination ability, and can coordinate with most metals to form complexes. In view of the specificity and flexibility of its structure, it is more and more popular in the application research in the field of catalysis, biological activity and medicine. In particular, π-conjugated materials with organic Schiff bases as structural units are widely used in light-emitting devices, organic solar cells, and photocatalysts due to their outstanding properties such as diversity, light weight, softness, convenient processing, and adjustable photoelectric properties. . Especially in the field of optoelectronic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02
CPCC08G73/0273
Inventor 黄新华王诺亚
Owner ANHUI UNIV OF SCI & TECH
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