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Fluorescent TiO2 powders prepared using a new perylene diimide dye: applications in latent fingermark detection.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Choi, Mi Jung Smoother, Tanya Martin, Aiden A. McDonagh, Andrew M. Maynard, P. Lennard, Chris Roux, Claude |
| Copyright Year | 2007 |
| Abstract | A new, highly fluorescent dye was synthesised using oleylamine combined with a perylene dianhydride compound. The new dye was characterised by 1H NMR, UV-vis spectroscopy and fluorescence spectroscopy as well as quantum yield. The dye was absorbed onto titanium dioxide nanoparticles for use as a fingerprint detection powder. The new fluorescent powder was applied to latent fingermarks deposited onto different non-porous surfaces and compared with commercial fluorescent powders. The powder exhibits strong fluorescence at 650-700 nm under excitation at 505 nm. On glass surfaces, the new powder gave images showing tertiary-level detail of the fingermark ridges with almost no background development. Compared with current magnetic fluorescent powders, the new powder was slightly weaker in fluorescence intensity but produced significantly less background development, resulting in good contrast between the fingermark and the substrate. |
| Starting Page | 279 |
| Ending Page | 283 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://opus.lib.uts.edu.au/bitstream/10453/862/3/2007001008.pdf |
| PubMed reference number | 17399926v1 |
| Volume Number | 173 |
| Issue Number | 2-3 |
| Journal | Forensic science international |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Excitation Exhibits as Topic Fluorescence Spectroscopy Fluorescent Dyes Nanostructured Materials Particle Size Perylene Polyethylene Powder dose form Staining method metal oxide oleylamine pyromellitic dianhydride pyromellitic diimide tertiary titanium dioxide |
| Content Type | Text |
| Resource Type | Article |
