A method for immobilizing covalent organic framework materials and its application

A covalent organic framework and coating technology, applied in the field of chromatographic columns, achieves the effects of less sample consumption, simple process and low cost
CN105214340BActive Publication Date: 2017-01-18武汉长林医药科技有限公司
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
武汉长林医药科技有限公司
Publication Date
2017-01-18

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention provides a polydopamine-assisted method for fixing a covalent organic framework material, and an application thereof. First, a dopamine water solution is prepared; the pH value is regulated to weakly alkaline, and an oxidation treatment is carried out; a carrier with a clean surface is added under room temperature, and the surface of the carrier is modified with a polydopamine coating; the modified carrier is placed in a mixed solution of binary boric acid and 2,3,6,7,10,11-hexahydroxyl triphenyl; one boric acid group is subjected to a reaction with o-phenyldihydroxyl site provided by the polydopamine coating, and another boric acid group participates in COFs framework formation, such that COFs crystal is formed on site and fixed on the surface of the carrier. The preparation process provided by the invention is simple. With the wide adaptability of polydopamine modification, synthesis and fixing of COFs on the surfaces of various substrates can be realized. The method is applied in preparing open tubular electrochromatography columns. Prepared open tubular column based on COF-5 has good separation effect upon electrically neutral benzene-series substances in an electrochromatography mode.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of chromatographic columns, and relates to a method and application of polydopamine-assisted fixation of covalent organic framework materials. Background technique

[0002] Covalent organic frameworks are a class of crystalline microporous polymers in which organic ligands are linked by covalent bonds. Covalent organic frameworks have been widely used in gas storage due to their large specific surface area, excellent pore properties, low framework density, high thermal and chemical stability, controllable physical and chemical properties, and easy functionalization. , catalysis, optoelectronic materials and other fields. The covalent organic framework material COF-5 is a two-dimensional crystal material formed by the condensation reaction of 1,4-benzenediboronic acid and 2,3,6,7,10,11-hexahydroxytriphenyl. The boronic acid group in 1,4-benzenediboronic acid reacts with the phthalic dihydroxyl group in 2,3,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More