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Related Experiment Video

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Electronic Tongue Generating Continuous Recognition Patterns for Protein Analysis

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Selective recognition of Pr3+ based on fluorescence enhancement sensor.

M R Ganjali¹, M Hosseini, A Ghafarloo

¹Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran. ganjali@khayam.ut.ac.ir

Materials Science & Engineering. C, Materials for Biological Applications

|August 6, 2013

Summary

A novel fluorescent probe, (E)-2-(1-(4-hydroxy-2-oxo-2H-chromen-3-yl)ethylidene)hydrazinecarbothioamide (L), enables sensitive detection of trace praseodymium ions. This probe offers a selective and efficient method for quantifying praseodymium in various solutions.

Keywords:

Enhancement Fluorescence Fluorescent sensor Praseodymium

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Area of Science:

Analytical Chemistry
Materials Science
Spectroscopy

Background:

Trace metal ion detection is crucial in environmental and biological monitoring.
Developing selective and sensitive fluorescent probes is a key area in analytical chemistry.
Praseodymium (Pr3+) detection requires specific methodologies due to its unique properties.

Purpose of the Study:

To develop a novel fluorescent sensor for the selective detection of trace praseodymium ions.
To investigate the sensing mechanism of the probe with praseodymium ions.
To validate the sensor's performance in real-world sample analysis.

Main Methods:

Fluorescence spectroscopy was employed to monitor the interaction between the probe and praseodymium ions.
The probe, (E)-2-(1-(4-hydroxy-2-oxo-2H-chromen-3-yl)ethylidene)hydrazinecarbothioamide (L), was synthesized and characterized.
A 1:1 complex formation between the probe and Pr3+ was studied in an acetonitrile-water solution.

Main Results:

The fluorescent probe L exhibited enhanced fluorescence intensity upon binding with Pr3+ ions.
A linear relationship was observed for praseodymium ion quantification in the range of 1.6×10(-7) to 1.0×10(-5) M.
The sensor demonstrated a low limit of detection (8.3×10(-8) M) and high selectivity for Pr3+ over other metal ions.

Conclusions:

The developed fluorescent probe L is effective for the selective and sensitive detection of praseodymium ions.
The sensor's ability to form a 1:1 complex with Pr3+ underpins its detection mechanism.
The probe was successfully applied to determine praseodymium ion concentrations in water samples, demonstrating practical applicability.