Design, Synthesis and Sensing Application of Novel Dual Lanthanide Doped Core-Shell Fluorescent Silica-Based Nanoparticles.

ABSTRACT: The synthesis of lanthanide fluorescent nanoparticles and the investigation of their fluorescence sensing applications have attracted a great deal of attention in materials science over the past decades. In this study, we designed and synthesized a core-shell fluorescent nanoparticle based on dual-center emission from the europium and terbium complexes, and demonstrated its application as a ratiometric fluorescence sensor for the detection of 2,6-pyridinedicarboxylic acid (DPA). The europium complex is embedded in the inner core, providing a stable fluorescence signal at 617 nm, while the terbium complex is positioned in the outer shell and exhibits a fluorescence "Turn-ON" response at 545 nm upon interaction with DPA molecules. The fluorescence intensity ratio F₅₄₅/F₆₁₇

SUBMITTER: Li Q 

PROVIDER: S-EPMC12562495 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature