Environmentally Friendlier Development of Latent Prints on Porous Surfaces Using 1,8-Diazafluoren-9-one (DFO) and iPhone 11
Year: 2025
Type: article
Abstract: A novel method for the development of fingerprints in environmentally friendlier conditions and on porous surfaces with 1,8-diazafluoren-9-one (DFO) is reported herein. DFO, a fluorescent dye was formulated in glacial acetic acid, methanol, and a minimum amount of methylene chloride. The DFO reacted with amino acid components of latent prints, resulting in a fluorescent species that was visualized under daylight, UV light at 254 nm, 365 nm, and LED at 395–405 nm. The developed prints were photographed using iPhone 11 and IOS 17.4.1. The fluorescent spectra of the species resulting from DFO’s reaction with the amino acid glycine and the wavelengths of maximum excitation (λex = 470 nm) and emission (λem = 585 nm) were also reported. The method is suitable for forensic laboratories.
Source: Forensic Sciences
Author: Jules Seh Noel Guei
Institution: Alabama Agricultural and Mechanical University
Language: English
Subfield: Safety Research
Field: Social Sciences
Domain: Social Sciences
Open Access status: gold
Estimated APC paid: $1,207
OpenAlex ID: W4408504795