Synthesis, Characterization and Theoretical Calculations of a New Fluorescent Probe for Detection Cu²⁺

ABSTRACT

A novel rhodamine-based probe (RP1) was synthesized and characterized as a colorimetric chemosensor with high selectivity and sensitivity in biological systems toward Cu²⁺ over other cations tested. RP1 showed low detection limit for copper. The binding between RP1 and Cu²⁺ was confirmed to be stoichiometric. The recognition process was reversible. We also performed the density functional theory (DFT) calculation to have more understanding of structure, molecular and electronic.

KEYWORDS:

• Cu²⁺ fluorescent probe
• reversibility
• rhodamine
• selective detection

Additional information

Funding

We gratefully acknowledge financial support from the National Natural Science Foundation of China (Grant No. 21042002) and Shaanxi Province Natural Science Foundation.