Preparation method of metal polyphenol vesicle material with micrometer/nanometer multilayer composite structure

A composite structure, multi-level technology, applied in the preparation of organic compounds, the preparation of aminohydroxy compounds, chemical instruments and methods, etc., to achieve rich functional effects

Inactive Publication Date: 2017-04-19
SHIJIAZHUANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on the preparation of hollow materials by the self-sacrificing template method of MOFs particles is mostly concentrated in the field of inorganic materials research, while organic ligands such

Method used

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  • Preparation method of metal polyphenol vesicle material with micrometer/nanometer multilayer composite structure
  • Preparation method of metal polyphenol vesicle material with micrometer/nanometer multilayer composite structure
  • Preparation method of metal polyphenol vesicle material with micrometer/nanometer multilayer composite structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) ZIF-8 Synthesis of Colloidal Particles

[0030] 734.4 mg Zn(NO 3 ) 2 4H 2 O was dissolved in 50 mL of anhydrous methanol to form solution a, 810.6 mg of 1-methylimidazole and 810.6 mg of 2-methylimidazole were dissolved in 50 mL of anhydrous methanol to form solution b, and solution b was poured into solution a , stirred for 20 s, and then stood for a certain period of time. The resulting precipitate was separated by filtration, washed with methanol, and left to air dry naturally. ZIF-8 The TEM and SEM pictures of the colloidal particles are as follows figure 1 a and figure 1 as shown in b.

[0031] (2) Zn-EA-capsule Synthesis

[0032] Dissolve 4 mg ellagic acid (EA) in 5 mL pH=12 (KH 2 PO 4 / NaOH) buffer solution, then add 5 mg of the prepared ZIF-8 colloidal particles to the system at 20-30 °C, stir for 4 h, centrifuge the obtained precipitate, and wash with buffer (pH=12) and water respectively Wash several times and air dry naturally. Zn-EA-caps...

Embodiment 2

[0034] (1) ZIF-67 Synthesis of Colloidal Particles

[0035] 249.0 mg Co(NO 3 ) 2 4H 2 O was dissolved in 25 mL of anhydrous methanol to form solution a, 328.0 mg of 2-methylimidazole was dissolved in 25 mL of anhydrous methanol to form solution b, and solution b was poured into solution a, stirred for 20 s, and then statically Set for 24 hours. The resulting precipitate was separated by filtration, washed with methanol, and left to air dry naturally.

[0036] (2) Co-EA-capsule Synthesis

[0037] With embodiment 1, ZIF-8 colloidal particle is changed into ZIF-67 Colloidal particles are sufficient.

Embodiment 3

[0039] (1) PB (Prussian Blue) Synthesis of Colloidal Particles

[0040] Combine 3.8 g PVP(K30) and 0.11 g K 4 Fe(CN) 6 4H 2 O was dissolved in 50 mL of 0.1 mol / L HCl solution, stirred to dissolve, and then allowed to stand at 80 °C for 24 h. The obtained blue precipitate was separated by filtration, washed with methanol, and then placed in air to dry naturally.

[0041] (2) Fe-EA-capsule Synthesis

[0042] With embodiment 1, ZIF-8 colloidal particle is changed into PB Colloidal particles are sufficient.

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Abstract

The invention discloses a preparation method of a metal polyphenol vesicle material with a micrometer/nanometer multilayer composite structure. The metal polyphenol vesicle material with the multilayer composite structure is obtained by etching polyphenol by taking a metal organic framework compound serving as a template. The precise control on an internal structure of a vesicle and the surface roughness of the vesicle is realized through controlling experiment parameters such as etching time and a pH value. The functionality of the obtained vesicle material is also greatly enriched by introducing a polyphenol structural unit to an assembly system, and the preparation method is favorably applied to aspects such as catalytic reaction and drug delivery.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a preparation method of a metal polyphenol vesicle material with a micro / nano multi-level composite structure. Background technique [0002] Due to its unique structure, composition and many properties related to its structure and composition, metal-organic coordination polymer vesicle materials, such as: selective permeation, high mechanical strength, good thermal stability, adjustable pH response Sex, etc., has aroused widespread concern in the scientific community. In recent years, more and more people have joined the research on this kind of materials with special structures, and successfully prepared them by methods such as liquid-liquid interface growth, spray drying, and self-sacrificing templates. Recently, the use of MOFs colloidal particles as self-sacrificing templates for the preparation of micro- and nanoscale hollow-structure vesicles has graduall...

Claims

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Application Information

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IPC IPC(8): C08G83/00B01J31/22C07C213/02C07C215/76A61K9/127A61K47/34
CPCA61K9/1273A61K47/34B01J31/181B01J31/2213B01J2231/646C07C213/02C08G83/008C07C215/76
Inventor 王惠朱伟李中秋次立杰
Owner SHIJIAZHUANG UNIVERSITY
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