Preparation and Properties of Cd/Ni Complexes Based on 2,6-Bis(4′-carboxyl-phenyl)pyrazine Ligand

Abstract

Two transition metal complexes (complex 1 = {[Cd (DCPP)·(H₂O)]·(DMF)}_n and complex 2 = {[Ni (DCPP)·(H₂O)]·(DMF)}_n) with the same structure and different functions were synthesized based on 2,6-bis(4′-carboxybenzene)pyrazine ligand (H₂DCPP) by solvothermal method, and their structure and properties were analyzed and characterized by a variety of characterization methods. Complex 1 was used as a fluorescence sensor to recognize cations and anions in water; it had excellent recognition and anti-interference ability with Fe³⁺ and Cr₂O₇²⁻ among cations and anions. Complex 2 (2-CPE) was used as electrochemical material to perform electrochemical tests on hydrogen peroxide and sodium nitrite with good electrocatalytic effect. This work provides a synthesis strategy for fluorescence and electrochemical sensing materials, respectively.