Nanostructured Silicon‐Based Fingerprint Dusting Powders for Enhanced Visualization and Detection by Mass Spectrometry. Issue 3 (26th January 2016)

• Record Type: Journal Article
• Authors: Guinan, Taryn M.; Kobus, Hilton; Lu, Yiqing; Sweetman, Martin; McInnes, Steven J. P.; Kirkbride, K. Paul; Voelcker, Nicolas H.
• Is Part Of: ChemPlusChem. Volume 81:Issue 3(2016)
• Page Start: 258
• Page End: 261
• Publication Date: 2016-01-26
• Subjects: fingerprint dusting -- luminescence -- mass spectrometry -- silicon nanostructures -- time-resolved spectroscopy; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cplu.201500546
• Languages: English
• ISSNs: 2192-6506

Abstract

Abstract: Porous silicon microparticles (pSi MPs) functionalized with fluorescent dyes (lissamine and carboxy‐5‐fluorescein) and intrinsically luminescent pSi MPs were explored as novel fingerprint dusting powders. The versatility of luminescent pSi MPs is demonstrated through time‐gated imaging of their long‐lived (lifetime>28 μs) near‐IR emission, and mass spectrometry analysis of fingerprints dusted with luminescent pSi MPs to provide further information on exogenous small molecules present in latent fingerprints. Abstract : To catch a thief : In research on forensic methods novel nanostructured silicon microparticles with long luminescence decay times and near‐IR emission were used as fingerprint dusting powders (see figure).