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A Paradigm Shift in Fingerprint Visualization: Aggregation-Induced Emission Materials and Their Applications.
Shuai Liang1,2, Shuhui Gao1
1School of Investigation, People's Public Security University of China, Beijing, China.
Critical Reviews in Analytical Chemistry
|January 28, 2026
Summary
Aggregation-induced emission (AIE) materials revolutionize latent fingerprint (LFP) visualization. AIE luminogens (AIEgens) offer enhanced detection through unique photophysical properties, advancing forensic science.
Area of Science:
- Forensic Science
- Materials Science
- Chemistry
Background:
- Traditional latent fingerprint (LFP) visualization methods face limitations.
- Aggregation-induced emission (AIE) materials offer unique photophysical properties for enhanced detection.
Purpose of the Study:
- To review the principles and advancements of AIE luminogens (AIEgens) in LFP visualization.
- To analyze interaction mechanisms, luminescence modes, and methodologies for AIEgen application in LFP detection.
Main Methods:
- Elucidation of the restriction of intramolecular motion (RIM) mechanism in AIEgens.
- Systematic review of AIEgen applications in LFP visualization, covering interface interactions, luminescence, and methodologies.
- Analysis of qualitative and quantitative evaluation criteria for LFP visualization.
Main Results:
- AIEgens demonstrate significant progress in LFP visualization by overcoming conventional method limitations.
- Effective interaction mechanisms (hydrophobic, electrostatic, physical adsorption) and luminescence modes (fluorescence, phosphorescence) are identified.
- Both sole and combined application methodologies show promise for practical LFP detection.
Conclusions:
- AIEgens represent a paradigm shift in LFP visualization, offering advanced forensic detection capabilities.
- Challenges include limited color contrast on complex backgrounds and a lack of unified quantitative standards.
- Future research should focus on standardized protocols, optimized performance, and multiplexed evidence analysis for nondestructive trace analysis.
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