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A novel ratiometric fluorescent sensor for Ag+ based on two fluorophores
Ming Jun Cen1, Tao Chang1, Yao Bing Yin1
1College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, People's Republic of China.
Methods and Applications in Fluorescence
|April 11, 2018
Summary
A new ratiometric fluorescent probe, BCB, enables sensitive and selective detection of silver ions (Ag+). This probe utilizes two Boron-dipyrromethene (BODIPY) units for accurate fluorescence ratio changes.
Area of Science:
- Analytical Chemistry
- Materials Science
- Chemical Sensing
Background:
- Development of selective fluorescent probes for metal ion detection is crucial.
- Boron-dipyrromethene (BODIPY) dyes offer unique photophysical properties for probe design.
Purpose of the Study:
- To report a novel ratiometric fluorescent probe, designated BCB.
- To achieve sensitive and selective detection of silver ions (Ag+) using BCB.
Main Methods:
- Design and synthesis of a ratiometric fluorescent probe (BCB) incorporating two BODIPY units.
- Investigation of the probe's response to Ag+ ions via fluorescence spectroscopy.
- Evaluation of selectivity against other common metal ions.
Main Results:
- BCB exhibits a ratiometric response to Ag+ ions, with a fluorescence intensity ratio change (λ570/λ535) from 0.16 to 1.0.
- The probe demonstrates excellent selectivity for Ag+ over various other metal ions (Cd2+, Cu2+, Fe3+, Hg2+, Mg2+, Ni2+, Pb2+, Zn2+).
- A distinct fluorescence emission appears at 570 nm upon Ag+ addition, while a constant reference signal is maintained at 535 nm.
Conclusions:
- BCB is a novel and effective ratiometric fluorescent probe for sensitive and selective Ag+ detection.
- The probe's design, utilizing two BODIPY units, provides a reliable platform for ratiometric sensing.
- BCB shows significant potential for practical applications in analytical chemistry requiring Ag+ quantification.
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