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Visualising Latent Fingermarks with Pure Organic Persistent Luminescent Materials

Parmenter, Ryan (2021) Visualising Latent Fingermarks with Pure Organic Persistent Luminescent Materials. Master of Science by Research (MScRes) thesis, University of Kent,. (doi:10.22024/UniKent/01.02.88048) (KAR id:88048)

Language: English

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This past decade, organic persistent luminescent materials have gained considerable research interest and have been utilised by a diverse range of scientific disciplines. Here in this research, two organic persistent luminescent materials have been investigated, optimised, and prepared as fingerprint powders. Both powders were used as latent fingermark developers, following Phase 1 and 2 trials established by the International Fingerprint Research Group. The first organic persistent luminescent material,(3-Bromopropyl)triphenylphosphonium bromide, was selected from a recent publication and its photoluminescent properties were optimised. The second material investigated was 2,4,6-tri(4-pyridyl)-1,3,5-triazine. To the best of our knowledge, this is the first report which claims to have achieved a persistent luminescence in, 4,6-tri(4-pyridyl)-1,3,5-triazine, without the need of inorganic doping systems. Phase 2 trials identified both powdered materials to effectively develop latent fingermarks on non-porous surfaces, with (3-bromopropyl)triphenylphosphonium, performing slightly better out of the two. In summary, this study has identified the use of alternate organic persistent luminescent materials to be used as fingermark developers, and, with further investigations, may promise effective, low-cost alternatives to the persistent luminescent fingerprint powders currently on the market.

Item Type: Thesis (Master of Science by Research (MScRes))
Thesis advisor: Arnold, Donna
DOI/Identification number: 10.22024/UniKent/01.02.88048
Uncontrolled keywords: Forensic (3-Bromopropyl)triphenylphosphonium Fingerprint Phosphorescence Fluorescence 2,4,6-Tri(4-Pyridyl)-1,3,5-Triazine
Subjects: Q Science
Divisions: Divisions > Division of Natural Sciences > School of Physical Sciences
SWORD Depositor: System Moodle
Depositing User: System Moodle
Date Deposited: 11 May 2021 15:10 UTC
Last Modified: 19 Jul 2021 13:41 UTC
Resource URI: (The current URI for this page, for reference purposes)
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