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Ratiometric Fluorescent Sensor Based on Tb(III) Functionalized Metal-Organic Framework for Formic Acid
Chao-Wei Zhang1, Mei-Ling Li1, Yi-Duo Chen1
1Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China.
Molecules (Basel, Switzerland)
|December 23, 2022
Summary
Researchers developed a lanthanide-functionalized metal-organic framework (TH25) as a dual-emission sensor. This sensor offers highly selective and sensitive detection of formic acid, crucial for food safety and environmental monitoring.
Area of Science:
- Materials Science
- Analytical Chemistry
- Environmental Science
Background:
- Formic acid is a vital industrial chemical with implications for food safety and environmental quality.
- Accurate and sensitive detection methods for formic acid are essential.
- Metal-organic frameworks (MOFs) offer tunable properties for sensing applications.
Purpose of the Study:
- To develop a novel ratiometric fluorescent sensor for the effective detection of formic acid.
- To utilize lanthanide-functionalized MOFs for enhanced sensing capabilities.
- To provide a practical and sensitive method for monitoring formic acid levels.
Main Methods:
- Synthesis of a lanthanide-functionalized dual-emission metal-organic framework (TH25).
- Characterization of TH25 for its structural and optical properties.
- Evaluation of TH25 as a ratiometric fluorescent sensor for formic acid detection, assessing selectivity, sensitivity, and reproducibility.
Main Results:
- The synthesized TH25 exhibited dual-emission properties suitable for ratiometric sensing.
- The sensor demonstrated high selectivity and sensitivity towards formic acid.
- A low limit of detection (LOD) of 2.1 ppm was achieved, indicating practical applicability.
- The sensor showed good reproducibility in detecting formic acid.
Conclusions:
- Lanthanide-functionalized MOFs can be effectively designed as ratiometric fluorescent sensors.
- TH25 provides a promising platform for the sensitive and selective detection of formic acid.
- This work contributes to the development of advanced chemical sensors for organic acids in food safety and environmental monitoring.
