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A highly selective and sensitive boronic acid-based sensor for detecting Pd2+ ion under mild conditions
Guiqian Fang1, Dongxue Zhan1, Ran Wang1
1School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250200, Shandong, China; Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China; Key Laboratory for Biotech-Drugs Ministry of Health, Jinan 250062, Shandong, China; Key Laboratory for Rare ＆ Uncommon Diseases of Shandong Province, Jinan 250062, Shandong, China.
A novel boronic acid-based sensor selectively detects palladium ions (Pd2+). This sensor exhibits a 36-fold fluorescence increase and a low detection limit, showing potential for practical Pd2+ recognition.
Area of Science:
- Chemical Sensors
- Analytical Chemistry
- Materials Science
Background:
- Accurate detection of palladium ions (Pd2+) is crucial in various environmental and industrial applications.
- Development of selective and sensitive sensors for metal ion detection remains a significant challenge.
Purpose of the Study:
- To develop and characterize a boronic acid-based sensor for the selective recognition of palladium ions (Pd2+).
- To evaluate the sensor's performance in terms of sensitivity, selectivity, and water solubility.
Main Methods:
- Synthesis of a boronic acid-based fluorescent sensor.
- Fluorescence spectroscopy was employed to monitor sensor-analyte interactions.
- Binding studies were conducted in aqueous solutions to assess selectivity and sensitivity.
Main Results:
- The sensor demonstrated a selective response to Pd2+ ions, with a 36-fold increase in fluorescence intensity at 2.47 × 10-5 M Pd2+.
- The sensor exhibited good water solubility, functioning effectively in 99% aqueous solutions.
- A low limit of detection (38 nM) and high selectivity against various other metal ions were achieved.
- The presence of Pd2+ ions induced a distinct blue fluorescence under UV light (365 nm).
Conclusions:
- The developed boronic acid-based sensor offers a highly selective and sensitive method for detecting Pd2+ ions.
- The sensor's performance in aqueous media highlights its potential for real-world applications in Pd2+ monitoring.
