A novel fluorescent carbon nanoparticles for detection of dipicolinic acid

Abstract

In this work, we developed a simple route to synthesize green fluorescence carbon nanoparticles (FCPs) at room temperature with dopamine and p-phenylenediamine as raw materials. The FCPs exhibited a salient fluorescence emission peak at 525 nm and well stability in the intricate surroundings. Only Cu²⁺ ions could significantly inhibited the fluorescence of FCPs and could be successfully detected in the concentration scope of 0–200 µmol·L⁻¹ based on the fluorescence quenching of FCPs. The Cu²⁺ ion-quenched fluorescence of FCPs system can be further recovered by the addition of dipicolinic acid (DPA) and could be utilized for DPA detection within the dynamic scope of 10–150 µmol·L⁻¹.

Keywords:

• Fluorescence
• carbon nanoparticles
• detection
• Cu²⁺
• dipicolinic acid

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by National Training Program of Innovation and Entrepreneurship for Undergraduates (202110145044) and the General Project of Natural Science Funds of Liaoning Province (2020-MS-082).