JOURNAL OF MATERIALS CHEMISTRY 20(48),2010
A novel conjugated polyelectrolyte with multiple carboxylate groups (PPE-(COOK)4) has been designed as the sensitive and selective probe for Cu2+. And, a fluorescence turn-on assay of glutathione reductase has been developed with a LOD of 0.2 mU/mL, which is more sensitive and robust than most current methods.