Porous crosslinked material, preparation and application thereof

Patent metadata

Field	Value
Publication number	US-12434221-B2
Application number	US-202118011425-A
Country	US
Kind code	B2
Filing date	Feb 1, 2021
Priority date	Feb 1, 2021
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

A TPC-OTBS n-hexane solution is added to a mixture of TPC-OSO 2 F, DMF, and DBU and allowed to stand to produce a crosslinked solvent gel; the crosslinked solvent gel is added to methanol, stirred, and dried to produce the porous crosslinked material. The gel acquired can be prepared into a pore-rich solid porous organic polymer material by means of solvent exchange. SEM and TEM are used to characterize the surface and internal morphologies of the solid material, and the porous morphology thereof is discovered, with large pores being the majority. Infrared and nuclear magnetic resonance are used to characterize the structure of a crosslinked polysulfate; the complete reaction of a sulfuryl fluoride group is proven by means of solid-state fluorine nuclear magnetic resonance spectroscopy and XPS element analysis; and the porous structure of the crosslinked polysulfate allows same to be provided with improved application prospect in terms of adsorption.

First claim

The invention claimed is:

1. A method for preparing a porous cross-linked material, comprising:
adding a TPC-OTBS n-hexane solution to a mixed solution of TPC-OSO 2 F, dimethylformamide (DMF) and 1,8-diazabicyclo(5.4.0)undec-7-ene (DBU);
leaving the mixed solution to react at room temperature to obtain a cross-linked solvogel;
adding the cross-linked solvogel into an alcohol, and
stirring and drying to obtain the porous cross-linked material,
the chemical structural formulas of TPC-OTBS and TPC-OSO 2 F are:

2. The method according to claim 1 , wherein the alcohol is methanol.

3. The method according to claim 1 , wherein a ratio of TPC-OSO 2 F, DMF, DBU, and the TPC-OTBS n-hexane solution is (200-210 mg):(1-4.5 mL):50 μg:2.15 mL; and in the TPC-OTBS n-hexane solution, a ratio of TPC-OTBS and n-hexane is (2.2-2.205 g):22 mL.

4. The method according to claim 1 , wherein the drying is at 70-90° C. for 10-15 hours.

5. The method according to claim 1 , further comprising:
adding the porous cross-linked material to a solution containing pollutants to realize the adsorption of pollutants.

6. The method according to claim 5 , wherein the pollutants comprise iodine, rhodamine B, bisphenol A, and tetracycline.

Assignees

• Univ Soochow

Inventors

• Lu Jianmei
• Xu Qingfeng

Classifications

• B01J2220/4812

  the starting material being of organic character · CPC title

• B01J20/305

  Addition of material, later completely removed, e.g. as result of heat treatment, leaching or washing, e.g. for forming pores · CPC title

• B01D2257/70

  Organic compounds not provided for in groups B01D2257/00 - B01D2257/602 · CPC title

• B01D2257/40

  Nitrogen compounds · CPC title

• B01D2257/202

  Single element halogens · CPC title