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Tropolone-Based Treatments for Visualising Latent Fingermarks on Porous Surfaces

preprint
revised on 19.06.2019 and posted on 19.06.2019 by Clara M. Agapie, Melissa Sampson, William Gee
The work describes a new chemical means of visualising latent fingerprints (fingermarks) using tropolone. Tropolone reacts with amino acids within the fingermark residue to form adducts that absorb UV radiation. These adducts provide useful contrast on highly-fluorescent prous surfaces will illuminated with UV radiation. The conjugated seven-membered ring of the tropolone adduct can be reacted further diazonium salts, which is demonstrated here with formation of two dyes. The methodology is extremely rapid, occurring in minutes with mild heating, and can be applied before ninhydrin in a chemical detection sequence.

Funding

Royal Society (RG170176)

Royal Society of Chemistry (RF18-4963)

History

Email Address of Submitting Author

W.Gee@kent.ac.uk

Institution

University of Kent

Country

United Kingdom

ORCID For Submitting Author

0000-0002-6520-6216

Declaration of Conflict of Interest

None to declare

Version Notes

Verson 2 Manuscript. Egregious error in figure 1 seen to. Much chastened.

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