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A Sensitive Visual Method for the Detection of Hydrogen Sulfide Producing Bacteria
Published on: June 27, 2022
A selective colorimetric and ratiometric fluorescent probe for hydrogen sulfide
Ming-Yu Wu1, Kun Li, Ji-Ting Hou
1Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, China.
Organic & Biomolecular Chemistry
|September 12, 2012
Summary
This study introduces a novel fluorescent probe for detecting hydrogen sulfide (H2S). The probe offers high selectivity and a significant spectral shift, enabling sensitive H2S detection.
Area of Science:
- Chemical Sensing
- Analytical Chemistry
- Biomedical Diagnostics
Background:
- Hydrogen sulfide (H2S) is a crucial signaling molecule in biological systems.
- Dysregulation of H2S levels is linked to various diseases, necessitating accurate detection methods.
Purpose of the Study:
- To develop a selective and sensitive probe for detecting H2S.
- To utilize an internal charge transfer (ICT) strategy for enhanced probe performance.
Main Methods:
- A novel reaction-based colorimetric and ratiometric fluorescent probe was designed.
- The probe exploits H2S-mediated reduction of a nitro compound to an amine.
- Spectroscopic techniques were used to evaluate probe performance.
Main Results:
- The probe demonstrated high selectivity for H2S over other reactive species and anions.
- A significant blue shift of over 120 nm was observed upon H2S detection.
- The emission intensity ratio change induced by H2S exceeded 4750, indicating high sensitivity.
Conclusions:
- The developed probe is effective for the selective and sensitive detection of H2S.
- The ICT-based strategy provides a robust platform for designing fluorescent probes.
- This probe has potential applications in biological and chemical sensing.
