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Evaluation of Nile Red‐Loaded Mesoporous Silica Nanoparticles for Developing Water‐Soaked Fingerprints on Thermal Paper
Author(s) -
Wang Wenjing,
Xing Jinfeng,
Ge Zhiqiang
Publication year - 2019
Publication title -
journal of forensic sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.715
H-Index - 96
eISSN - 1556-4029
pISSN - 0022-1198
DOI - 10.1111/1556-4029.13959
Subject(s) - nile red , reagent , solvent , mesoporous silica , nanoparticle , chromatography , chemistry , chemical engineering , nanotechnology , materials science , mesoporous material , organic chemistry , engineering , physics , quantum mechanics , fluorescence , catalysis
Nile red has been an alternative reagent for detecting latent fingerprints on wetted substrates. However, the presence of methanol in nile red solution could make injury to handlers and destroy the traces on surfaces, such as texts on thermal papers. A novel small particle reagent formulation constituting of mesoporous silica nanoparticles ( MSN s) based on nile red was prepared to overcome the problem. Compared with the conventional reagents Oil Red O or nile red solution, the nile red‐loaded MSN s are highly selective to lipid residues of fingerprints and showed a greater ability to develop clear, sharp, and detailed fingerprints on thermal papers after these were immersed in water. In addition, it can retain texts on the thermal papers well and use only water as a solvent. These suggested that nile red‐loaded MSN s are a safe, efficient, and convenient method to develop latent fingerprints on wide range of substrates of forensic importance.