Pillar[5]arene-based spongy supramolecular polymer gel and its properties in multi-responsiveness, dye sorption, ultrasensitive detection and separation of Fe3+

A pillar[5]arene-based spongy supramolecular polymer gel (SHG) with multi-stimuli response, ultrasensitive detection and separation properties for Fe³⁺ and organic dyes was developed.