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Updated: Jul 31, 2025

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Chromatographic separation performance of silica microspheres surface-modified with triazine-containing imine-linked
Haoyu Long1, Yanhao Jiang1, Yanjuan Liu2
1School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430205, China.
Abstract:
In this work, 2,4,6-tris(4-aminophenyl)-1,3,5-triazine (TAPT) and 1,3,5-tris(4-formylphenyl)benzene (TFPB) were used as monomers to construct a triazine-containing imine-linked covalent organic framework (COF), which was then bonded onto the surface of aldehydized silica (SiO2-CHO), and finally a COF@silica composite material (TAPT-TFPB COF@SiO2) was successfully prepared. The chromatographic separation performance of SiO2-CHO, TAPT-TFPB COF@SiO2 and TAPT-TFPB COF@SiO2/SiO2-CHO (80/20, mass ratio) was evaluated and compared. It was found that separation efficiency was obviously enhanced by adding an appropriate amount of SiO2-CHO into TAPT-TFPB COF@SiO2. The obtained TAPT-TFPB COF@SiO2/SiO2-CHO showed more favorable separation ability than SiO2-CHO and TAPT-TFPB COF@SiO2. Various aromatic compounds including alkylbenzenes, polycyclic aromatic hydrocarbons, environmental endocrine disruptors, foodborne stimulants and phenyl ketones were effectively separated on the TAPT-TFPB COF@SiO2/SiO2-CHO column in reversed phase chromatography mode. The silica microspheres surface-modified with triazine-containing imine-linked COFs proved to be a new type of promising chromatographic packing materials.
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