Four novel alkyl 2-cyanoacylate monomers and their use in latent fingermark detection by mid-infrared spectral imaging

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Show simple item record Tahtouh, M Scott, SA Kalman, JR Reedy, BJ 2012-02-02T08:03:02Z 2011-04-15
dc.identifier.citation Forensic Science International, 2011, 207 (1-3), pp. 223 - 238
dc.identifier.issn 0379-0738
dc.identifier.other C1 en_US
dc.description.abstract Four novel alkyl 2-cyanoacrylate monomers (alkyl = 1-cyanoethyl, 2-cyanoethyl, trideuteromethyl and pentadeuteroethyl) have been tested for their ability to develop latent fingermarks that can then be visualized using mid-infrared spectral (chemical) imaging. Each of the four monomers was chosen for its potential to produce a strong, isolated infrared spectral band in its corresponding polymer (to provide spectral contrast against most backgrounds), as well as for its potential ability to be fumed onto fingermarks in the manner of conventional ethyl 2-cyanoacrylate (superglue). With the exception of the 2-cyanoethyl 2-cyanoacrylate, which had to be fumed under reduced pressure, all of the monomers were found to be sufficiently volatile to be fumed in a conventional fuming cabinet. All four monomers polymerized selectively on fingermark ridges on a variety of non-porous and semi-porous surfaces, leading to excellent development of the fingermarks. Unfortunately, although high quality mid-infrared spectral images of the fingermarks could be formed for all of the polymers at various frequencies, the new C. N or C. D stretching vibrations did not give rise to strong enough absorption intensities for good contrast on difficult backgrounds such as polymer banknotes. However, in the 1-cyanoethyl 2-cyanoacrylate polymer, the presence of the additional nitrile group had the unintended but desirable effect of shifting the strong C. O absorption to higher frequencies, moving it away from interfering banknote absorptions. This enabled fingermark contrast to be achieved even against the intaglio printing on the banknotes. © 2010 Elsevier Ireland Ltd.
dc.language eng
dc.relation.isbasedon 10.1016/j.forsciint.2010.10.012
dc.title Four novel alkyl 2-cyanoacylate monomers and their use in latent fingermark detection by mid-infrared spectral imaging
dc.type Journal Article
dc.parent Forensic Science International
dc.journal.volume 1-3
dc.journal.volume 207
dc.journal.number 1-3 en_US
dc.publocation Clare en_US
dc.publocation CA, USA
dc.identifier.startpage 223 en_US
dc.identifier.endpage 238 en_US SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.conference SDM
dc.for 0699 Other Biological Sciences
dc.personcode 040570
dc.personcode 000263
dc.personcode 850126
dc.personcode 106600
dc.percentage 100 en_US Other Biological Sciences en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US 2011-04-28
dc.location.activity WOS:000288851300059 en_US
dc.location.activity Mesa, Arizona, USA
dc.location.activity Ireland
dc.description.keywords Chemical imaging
dc.description.keywords Cyanoacrylate
dc.description.keywords Fingerprints
dc.description.keywords Forensic science
dc.description.keywords Infrared
dc.description.keywords Polymer banknotes
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - Forensic Science
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
pubs.consider-herdc true
utslib.collection.history School of Chemistry and Forensic Science (ID: 339)
utslib.collection.history Closed (ID: 3)

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