A Highly Efficient BODIPY Based Turn-off Fluorescent Probe for Detecting Cu²

Area of Science:

• Analytical Chemistry
• Materials Science
• Environmental Science

Background:

• Boron-dipyrromethene (BODIPY) derivatives are widely used as fluorescent materials.
• Developing selective and sensitive probes for metal ion detection is crucial for environmental and biological monitoring.

Purpose of the Study:

• To design, synthesize, and characterize a novel fluorescent probe, HHPBA-BODIPY, for the sensitive detection of copper ions (Cu2+).
• To evaluate the probe's selectivity and efficiency in real water samples for environmental monitoring applications.

Main Methods:

• Synthesis and characterization of the HHPBA-BODIPY fluorescent probe.
• Spectroscopic analysis (absorption and emission) to determine the probe's optical properties.
• Investigation of the probe's response to Cu2+ ions, including fluorescence quenching and linearity analysis.
• Selectivity studies against various metal ions and testing in environmental water samples.

Main Results:

• The HHPBA-BODIPY probe exhibits strong green fluorescence around 510 nm with maximum absorption near 500 nm.
• Fluorescence intensity is quenched linearly with increasing Cu2+ concentration, with a detection limit of 0.35 μM.
• The probe demonstrates high selectivity for Cu2+ over most other tested metal ions, with minor interference from Fe3+ and Cr3+.
• HHPBA-BODIPY proved effective for detecting Cu2+ in real water samples.

Conclusions:

• HHPBA-BODIPY is a sensitive and selective fluorescent probe for Cu2+ detection.
• The probe's performance in water samples highlights its potential for environmental monitoring of copper ions.
• This BODIPY-based probe offers a promising tool for trace metal analysis.