Superiority of a polymeric scavenger over its hexapodal monomer towards efficient ReO4− removal in water

An imidazolium based hexapodal polymeric receptor, [PHIm-Br], showed selective and efficient removal (>99%) of ReO₄⁻ from 100% aqueous medium via solid–liquid extraction, which was 13% higher as compared to its monomeric analogue [HIm-Br].