biostudies-literatureLai JNational Natural Science Foundation of China-Yunnan Joint FundNatural Science Foundation of Yunnan ProvinceNational Natural Science Foundation of China8233-8243https://www.ebi.ac.uk/biostudies/studies/S-EPMC9049934biostudies-literatureUnknown10(14)Latent fingerprints (LFPs) are important evidence in crime scenes and forensic investigations, but they are invisible to the naked eye. In this work, a novel fluorescent probe was developed by integrating a narrow-band-emitting green afterglow phosphor, SrGa₁₂O₁₉:Mn²⁺ (SGO:Mn), and ethyl cellulose (EC) for the efficient visualization of LFPs. The hydrophobic interactions between the powder and lipid-rich LFPs made the ridge structures more defined and easily identifiable. The background fluorescence of the substrates was completely avoided because of the time-gated fluorescence of the afterglow phosphor. All the three levels of LFP degrees were clearly imaged due to the high sensitivity. Moreover, the SGO:Mn-EC powder was highly stable in neutral, acidic, aRSC advancesNovel organic-inorganic hybrid powder SrGa₁₂O₁₉:Mn²⁺-ethyl cellulose for efficient latent fingerprint recognition <i>via</i> time-gated fluorescence.PMC90499342019HC016U1902222117741385186202011664022Qiu JLai JHu SYang YWang QZhang KLong ZZhou DWang ZfalseNovel organic-inorganic hybrid powder SrGa₁₂O₁₉:Mn²⁺-ethyl cellulose for efficient latent fingerprint recognition <i>via</i> time-gated fluorescence.Latent fingerprints (LFPs) are important evidence in crime scenes and forensic investigations, but they are invisible to the naked eye. In this work, a novel fluorescent probe was developed by integrating a narrow-band-emitting green afterglow phosphor, SrGa₁₂O₁₉:Mn²⁺ (SGO:Mn), and ethyl cellulose (EC) for the efficient visualization of LFPs. The hydrophobic interactions between the powder and lipid-rich LFPs made the ridge structures more defined and easily identifiable. The background fluorescence of the substrates was completely avoided because of the time-gated fluorescence of the afterglow phosphor. All the three levels of LFP degrees were clearly imaged due to the high sensitivity. Moreover, the SGO:Mn-EC powder was highly stable in neutral, acidic, a2020-01-01T00:00:00Z2020 Feb2025-05-18T11:48:42.702Z2024-10-18T05:40:59.299ZS-EPMC90499343549785710.1039/d0ra00138d