Novel rhodamine derivate as high selective detection lead sensor

Area of Science:

• Chemical sensing
• Materials science
• Analytical chemistry

Background:

• Rhodamine derivatives are widely used as fluorescent probes.
• Development of selective sensors for heavy metal ions is crucial.
• Lead(II) ions pose significant environmental and health risks.

Purpose of the Study:

• To synthesize and characterize a novel rhodamine-based sensor.
• To investigate the binding properties of the sensor with various metal ions.
• To evaluate the sensor's potential for detecting lead(II) ions.

Main Methods:

• Synthesis of rhodamine-based sensor 1.
• Characterization using Nuclear Magnetic Resonance (NMR), Fourier-Transform Infrared spectroscopy (FT-IR), and mass spectrometry.
• Investigation of metal ion binding using UV-Vis and fluorescence spectroscopy.

Main Results:

• Sensor 1 was successfully synthesized and characterized.
• The sensor displayed selective colorimetric and fluorescence enhancement upon interaction with lead(II) ions.
• Optimal detection of Pb(2+) was achieved in a chloroform-tetrahydrofuran solvent mixture (7:3).

Conclusions:

• The novel rhodamine-based sensor demonstrates high sensitivity and selectivity for lead(II) detection.
• The sensor's distinct optical responses (colorimetric and fluorescence) facilitate easy monitoring.
• This sensor holds promise for practical applications in environmental monitoring and biological imaging.