Selective encapsulation and extraction of hydrogenphosphate by a hydrogen bond donor tripodal receptor

Intramolecular N–H⋯OC hydrogen bonding between the inner amide groups dictates the receptor–anion complementarity in a tripodal receptor towards selective encapsulation of hydrogenphosphate in the outer urea cavity by multiple hydrogen bonds.

Selective fluorescence sensing of H2PO4− by the anion induced formation of self-assembled supramolecular polymers

H2PO4− anions induced the formation of a fluorescent supramolecular polymer by halogen bonding interactions in a bromoimidazolium based tripodal receptor.

A GFP-chromophore-based C3V-symmetric tripodal receptor with selective recognition of Hg(ii), Fe(iii) and Cr(iii)

A GFP-chromophore tripodal receptor with a diameter of cavity = 2.7–3.5 Å selectively captures Hg2+, Fe3+ or Cr3+ ions.

A benzimidazole-based non-symmetrical tripodal receptor for the ratiometric fluorescence sensing of fluoride ions and solid state recognition of sulfate ions

A novel tripodal receptor has been reported as a fluorescent chemosensor for fluoride ions. Moreover, in solid state, seven units of the protonated receptors form a pseudo-capsular cavity to encapsulate two pairs of sulphate anions.