Time-Gated Imaging of Latent Fingerprints with Level 3 Details Achieved by Persistent Luminescent Fluoride Nanoparticles.
Wenjing ChenYifan SongWenxing ZhangRenren DengYixi ZhuangRong-Jun XiePublished in: ACS applied materials & interfaces (2022)
The discovery of X-ray-charged persistent luminescence (PersL) in fluoride nanoparticles enables these materials to emit photons without real-time excitation, which provides a great possibility for the development of new luminescent nanotechnologies. In this work, we developed NaLuF 4 :Mn nanoparticles with intense green PersL and functionalized surfaces and accordingly achieved time-gated imaging of latent fingerprints (LFPs) with Level 3 details. These surface-modified NaLuF 4 :Mn nanoparticles exhibited near-spherical morphology, long-lasting emission for several hours, appropriate trap depth distribution, and tight chemical bonding with amino acids from fingerprints, thus greatly improving the accuracy of LFP imaging in a variety of environments. The developed NaLuF 4 :Mn PersL nanoparticles are expected to find broad applications in the fields of LFP imaging and in vivo biological imaging.
Keyphrases
- high resolution
- quantum dots
- small molecule
- magnetic resonance imaging
- room temperature
- fluorescence imaging
- amino acid
- sensitive detection
- escherichia coli
- energy transfer
- magnetic resonance
- metal organic framework
- mass spectrometry
- staphylococcus aureus
- photodynamic therapy
- optical coherence tomography
- cystic fibrosis
- electron microscopy
- liquid chromatography
- dual energy