Design and Synthesis of Bioinspired Multifunctional Molecules for Hydrophobic Modification of Minerals

This thesis presents the design, synthesis, and application of novel, bioinspired flavylium based surfactants as sustainable hydrophobic modifiers for mineral processing. Inspired by the core structure of anthocyanin, a plant pigment, these multifunctional molecules were designed by incorporating alkyl amine groups to enhance their interaction with clay minerals, particularly kaolinite. The surfactants improved surface hydrophobicity, aggregation, and flotation performance of clay minerals while offering pH-responsive recyclability. Structure-function relationships were established through detailed physicochemical and spectroscopic analyses. These findings position flavylium based surfactants as promising green alternatives in mineral separation technologies.