A facile synthetic route and dual function of network luminescent porous polyester and copolyester containing porphyrin moiety for metal ions sensor and dyes adsorption

In this work, A novel optical metal ion sensor microporous polyesters and copolyesters containing porphyrin moiety as a monomeric unit in the main chain were successfully prepared by the interfacial condensation polymerization from 5,10,15,20-Tetrakis(4-hydroxyphenyl) porphyrin (Por-OH) and 5,10,15,20-Tetrakis(4-hydroxy-3-methoxyphenyl) porphyrin (Por-V) with aliphatic and aromatic acid chlorides derivatives (such as; adipoyl chloride, and azobenzene-4,4'-dicarboxylic chloride, respectively). These polyesters and copolyesters are characterized by FT-IR, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction, UV-Visible absorbance, fluorescence emission, and SEM measurements. The results show that our novel compounds are amorphous, have good thermal stability with high char yield and possess peaks similar to the porphynoid structure that make them good metal ion sensors with different metals ions (such as; Zn+2, Cu+2, Ni+2, Co+2, and Fe+3). Also, they can be used as dye adsorbents in aqueous solution and displayed amazing adsorption and selectivity toward cationic dye methylene blue (MB) over anionic sunset yellow (SY) in the dye's mixture.