Abstract:
Conjugated microporous polymers (CMPs) have attracted extensive attention due to their stable pore structure, various synthesis methods and applications in gas adsorption and dye adsorption in wastewater treatment. Based on the Sonogashira coupling reaction, two fluorine-doped porous polymers (synthetic route of ferrocene (Fc)-1,3,5-trifluoro-2,4,6-triethynylbenzene (FAB)-CMP, Fc-5,10,15,20-tetrakis(2-fluoro-4-ethynylphenyl) porphyrin (TFPP)-CMP) were designed and synthesized by using FAB and TFPP as the center construction units, 1,1'-dibromoferrocene (Fc(Br)
2) as a linking unit. The chemical structure, thermal stability, elemental composition and particle morphology of CMPs were investigated in detail. The results show that the fluorine-doped porous polymer is successfully synthesised by the Sonogashira coupling reaction, and the product exhibits good thermal stabi-lity and stable porosity. The BET specific surface areas of Fc-FAB-CMP and Fc-TFPP-CMP are 302.89 m
2/g and 125.2 m
2/g, respectively. Moreover, the introduction of ferrocene and fluorine can be the adsorption site of cationic dye methyl violet (MV), the highest adsorption value of Fc-FAB-CMP for MV reaches 318 mg/g.