Anal Chim Acta. 2026 Oct 22;1420:345957. doi: 10.1016/j.aca.2026.345957. Epub 2026 Jul 13.
ABSTRACT
Currently, there is an increasingly urgent need of high-efficient chemosensors for detecting highly toxic chromium ions (Cr3+ and Cr2O72-). Herein we propose an innovative lanthanide-based fluorescence sensing material, i.e., terbium coordination hybrid nanoparticles (6-MP)0.01CF0.004/Tb1 that are obtained based on the coordination self-assembly strategy. Its terbium luminescence is strongly associated with the ligand-assisted terbium sensibilization energy transfer approach that is sensitive to specific inorganic stimuli. It is further revealed that (6-MP)0.01CF0.004/Tb1 can be served as a real-time, selective, competitive and quantitative fluorescence chemosensor to detect Cr3+, Cr2O72-, and NO2– in aqueous solutions based on the quenched fluorescence of hybrid. Using statistical analysis methods, the hybrid (6-MP)0.01CF0.004/Tb1 even can discriminate several groups of cation or anion analogues, especially Cr3+ and Cr2O72- that are distinguished from each other by the pH regulation. Moreover, this hybrid enables operators to monitor different contents of Cr3+, Cr2O72-, and NO2– in real water samples. This study not only develops a novel luminescent lanthanide-based hybrid but also provides a promising fluorescence sensing platform for multianalyte detection of toxic Cr3+, Cr2O72-, and NO2– in potential fields.
PMID:42648834 | DOI:10.1016/j.aca.2026.345957
