The electrochemiluminescence (ECL) behavior of the sulfur-terminal CdS2L complex synthesized in this work was studied, and the ECL mechanism and effect factors were discussed. Based on the strong and stable ECL emission of the CdS2L complex, a solid-state ECL sensor was fabricated. The as-prepared sensor was used to detect glutathione (GSH), and the results show that the linear response range is from 0.002 μM to 4 μM with a detection limit of 0.67 nM for GSH solution.
