Synthesis and characterization of three blue fluorescent phthalazine–pyridine boron complexes with quantum yields up to 79%.

Polyethylenimines (PEI) are commercial hyperbranched polymers, which can be phosphonated into polyethylenimines (PEIP) by the method of Moedritzer–Irani under microwave irradiation. Totally phosphonated PEIP are very efficient resins for metal ions extraction, and are also excellent anti-corrosion agents of steel. Partially phosphonated PEIP stabilize the maghemite nanoparticles and form core-shells, which have been used as platforms for the immobilization of trypsin and β−cyclodextrin. Partially phosphonated PEIP also stabilize antibacterial silver nanoparticles.

Ionic Liquids (ILs) have gained significant attention in both industry and academia due to their unique properties and diverse applications. With countless possible combinations of cations (e.g., Ammonium, Sulfonium, Phosphonium) and anions (Organic or Inorganic), the variety of ILs is immense. Among them, Imidazolium salts form the largest IL family, making them a focal point in this study. Phenolic compounds, essential in the chemical industry, become hazardous to both human and aquatic life when released into the environment. Traditional separation methods for phenolics unfortunately involve environmentally problematic processes. This research focuses on synthesizing and characterizing Imidazolium-functionalized ILs ([EtO₂C₂mim]Br, [EtO₂C₂mim]BF₄, [EtO₂C₂mim]PF₆) and studying their phenol extraction abilities. The results revealed [EtO₂C₂mim]Br as the most effective, extracting 99% of phenol and offering a promising alternative for the efficient extraction of phenols from real coal liquefaction oil.