A novel pillar[5]arene-based emission enhanced supramolecular sensor for dual-channel selective detection and separation of Hg²⁺

Abstract

We constructed a supramolecular sensor (<bold>APRA–G</bold>) <italic>via</italic> a host–guest inclusion interaction between a rhodamine hydrazide-functionalized pillar[5]arene (<bold>APRA</bold>) and a bipyridine salt guest (<bold>G</bold>), which formed a stable dimer.