Instantaneous High-Resolution Visual Imaging of Latent Fingerprints in Water Using Color-Tunable AIE Pincer Complexes.
Lixin DuanQingshu ZhengTao TuPublished in: Advanced materials (Deerfield Beach, Fla.) (2022)
Instant visualization of latent fingerprints is developed by using a series of water-soluble terpyridine zinc complexes as aggregation-induced emission probes in pure water, under UV light or ambient sunlight. By simply soaking, or spraying with an aqueous solution of the probe, bright yellow fluorescence images with high contrast and resolution are readily developed on various surfaces including tinfoil, glass, paper, steel, leather, and ceramic tile. Remarkably, latent fingerprints can be visualized within seconds including details of whorl and sweat pores. The color of emission can be tuned from blue to orange by modifying the pincer ligands, allowing direct imaging under sunlight. These inexpensive, water-resistant, and color-tunable probes provide a practical approach for latent fingerprints recording and analysis, security protection, as well as criminal investigation in different scenarios.
Keyphrases
- high resolution
- living cells
- aqueous solution
- single molecule
- water soluble
- fluorescence imaging
- small molecule
- light emitting
- air pollution
- fluorescent probe
- energy transfer
- climate change
- magnetic resonance
- mass spectrometry
- deep learning
- particulate matter
- convolutional neural network
- magnetic resonance imaging
- escherichia coli
- public health
- biofilm formation
- high speed
- machine learning
- cystic fibrosis
- global health
- data analysis
- nucleic acid