A highly selective and sensitive turn-on fluorescent probe for the detection of holmium ion and its bioimaging†
Abstract
Phenolphthalein aldehyde was synthesized and used as a turn-on fluorescent probe for the detection of holmium ion (Ho3+), which is one of the lanthanide ions, in HEPES–DMF = 1 : 1 (v/v, pH = 7.4) solution with an excellent selectivity and sensitivity for Ho3+ over other metal ions.