A dansyl based fluorescence chemosensor for Hg(2+) and its application in the complicated environment samples

Area of Science:

• Analytical Chemistry
• Environmental Science
• Materials Science

Background:

• Mercury ions (Hg2+) pose significant environmental and health risks.
• Development of selective and sensitive detection methods for Hg2+ is crucial.
• Fluorescent chemosensors offer advantages in sensitivity and real-time monitoring.

Purpose of the Study:

• To develop a novel fluorescent chemosensor for mercury ion detection.
• To evaluate the selectivity, sensitivity, and response time of the developed sensor.
• To assess the sensor's applicability in complex environmental samples.

Main Methods:

• Synthesis of a novel fluorescent chemosensor (DAM) incorporating dansyl and morpholine units.
• Fluorescence spectroscopy was used to monitor the interaction between DAM and Hg2+.
• Experiments were conducted in a HEPES buffer/MeCN mixture at room temperature.

Main Results:

• The developed chemosensor (DAM) exhibited excellent selectivity and sensitivity towards Hg2+.
• Fluorescence quenching of DAM was observed in the presence of Hg2+, with a fast response time.
• DAM demonstrated strong anti-interference capabilities against common interfering ions.
• Successful detection of Hg2+ in Yellow River water samples was achieved.

Conclusions:

• The novel fluorescent chemosensor DAM is highly effective for selective and sensitive detection of Hg2+.
• DAM shows promising potential for real-world applications in monitoring mercury contamination in environmental samples.
• The sensor's performance highlights its utility in complex matrices and challenging detection scenarios.