Supersensitive detection of explosives by recyclable AIE luminogen-functionalized mesoporous materials
Dongdong Li1, Jianzhao Liu, Ryan T K Kwok
1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
Chemical Communications (Cambridge, England)
|June 14, 2012
Summary
This study introduces a novel fluorescent sensor using mesoporous SBA-15 and aggregation-induced emission (AIE) luminogens for highly sensitive picric acid (PA) detection. The recyclable sensor demonstrates excellent performance in water, offering a new method for detecting explosives.
Area of Science:
- Materials Science
- Analytical Chemistry
- Nanotechnology
Background:
- Developing sensitive and selective sensors for explosive detection is crucial for security.
- Mesoporous silica materials like SBA-15 offer high surface area and tunable properties for sensor applications.
- Aggregation-induced emission (AIE) luminogens provide unique fluorescence characteristics suitable for sensing applications.
Purpose of the Study:
- To develop an efficient and recyclable fluorescent sensor for the detection of picric acid (PA).
- To functionalize mesoporous SBA-15 with AIE luminogens for enhanced sensing capabilities.
- To establish a new model for the supersensitive detection of explosives.
Main Methods:
- Synthesis of mesoporous SBA-15.
- Functionalization of SBA-15 with aggregation-induced emission (AIE) luminogens.
- Fluorescence spectroscopy for picric acid (PA) detection.
- Evaluation of sensor recyclability and quenching constant.
Main Results:
- The functionalized SBA-15 exhibited efficient fluorescence sensing for picric acid (PA).
- A high quenching constant of up to 2.5 × 10(5) M(-1) was achieved in aqueous solution.
- The sensor demonstrated excellent recyclability, maintaining performance over multiple detection cycles.
Conclusions:
- Mesoporous SBA-15 functionalized with AIE luminogens is a promising platform for supersensitive fluorescent detection of explosives like PA.
- The developed sensor offers an efficient, recyclable, and highly sensitive method for explosive detection.
- This work presents a novel model for advanced explosive sensing technologies.
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