Ratiometric fluorescence nanoprobe based on nitrogen-doped carbon dots for Cu²⁺ and Fe³⁺ detection.

ABSTRACT: Heavy metal ions pollution in environmental waters has an increasing impact on human health. As two common metal ions, copper ions (Cu²⁺) and ferric ions (Fe³⁺) widely exist in nature and play a vital role in life process. Therefore, it is significant to design sensitive and simple detection approaches for Cu²⁺ and Fe³⁺. In our work, the ratiometric fluorescence analysis method (denoted as N-CDs/OPD) was established for Cu²⁺ and Fe³⁺ detection. The N-CDs exhibited a Cu²⁺ and Fe³⁺ fluorescence quenching response properties. The o-phenylenediamine (OPD) may be oxidized to 2,3-diaminophenazine (DAP) by Cu²⁺ and Fe³⁺. With addition of Cu²⁺ or Fe³⁺, the fluorescenc

SUBMITTER: Yang C 

PROVIDER: S-EPMC11842751 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature