A single probe for solvent dependent optical recognition of iron(II/III) and arsenite: discrimination between iron redox states with single crystal X-ray structure evidence.

ABSTRACT: The detection and discrimination of Fe²⁺ and Fe³⁺ ions have been investigated using a simple probe (L), produced by the condensation of ethylenediamine and 3-ethoxysalicyaldehyde. Single crystal X-ray structures demonstrate that L interacts with Fe²⁺ and Fe³⁺. In aqueous-DMSO media, the L recognises AsO₂^- by fluorescence and colorimetry techniques. The AsO₂^- aided PET inhibition and H-bond assisted chelation enhanced fluorescence (CHEF) boost fluorescence by 91-fold. The L can detect 0.354 ppb Fe²⁺, 0.22 ppb Fe³⁺ and 0.235 ppt AsO₂^-.

SUBMITTER: Das J 

PROVIDER: S-EPMC10590385 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature