A colorimetric and fluorescent turn on chemodosimeter for Pd(2+) detection

Area of Science:

• Analytical Chemistry
• Organic Chemistry
• Materials Science

Background:

• Palladium(II) ions are significant in various industrial processes and biological systems.
• Development of sensitive and selective detection methods for palladium is crucial.

Purpose of the Study:

• To synthesize and characterize a novel rhodamine derivative (L) as a chemodosimeter.
• To evaluate its efficacy in detecting palladium(II) ions in aqueous media.

Main Methods:

• Synthesis of rhodamine derivative L.
• Characterization using Nuclear Magnetic Resonance (NMR) and Mass Spectrometry.
• Fluorescence spectroscopy for detection of Pd(2+).
• Job's plot analysis to determine stoichiometry.

Main Results:

• Successful synthesis and characterization of rhodamine derivative L.
• Chemodosimeter L exhibits naked-eye fluorescent detection of Pd(2+).
• Achieved a low detection limit for Pd(2+) in the 10(-7)M range.
• The binding stoichiometry between ligand and L was determined to be 1:2.

Conclusions:

• Rhodamine derivative L is a highly sensitive and selective fluorescent chemodosimeter for Pd(2+).
• The developed method offers a simple and effective approach for palladium ion detection in aqueous solutions.