Balancing Molecular Sensitization and Surface Passivation in Lanthanide-Doped Nanoparticle-Based Organic-Inorganic Nanohybrids.

ABSTRACT: Lanthanide-doped nanoparticles (LnNPs) are promising for advanced photonic applications due to their unique optical properties. However, their practical implementation is hindered by surface quenching and weak absorption. Surface passivation through core-shell architectures is effective in mitigating quenching. However, it creates a fundamental trade-off by impeding molecular sensitization via energy transfer (ET) in the organic-inorganic hybrid systems. Here, we investigate this trade-off by fabricating core-shell LnNPs with precisely controlled shell thicknesses ranging from 0.8 to 3.0 nm. Surface passivation yields enhancements in 290-fold upconversion intensity and 25-fold downshifting intensity. Using 9-anthracenecarboxylic acid, we demonstrate that ET efficiency exhibits a nonmonoton

SUBMITTER: Jiang Z 

PROVIDER: S-EPMC12616780 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature