Chemistry:1,8-Diazafluoren-9-one
From HandWiki
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| Names | |
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| Preferred IUPAC name
9H-Cyclopenta[1,2-b:4,3-b′]dipyridin-9-one | |
| Other names
DFO
9H-1,8-Diazafluoren-9-one 9H-Pyrido[3′,2′:3,4]cyclopenta[1,2-b]pyridin-9-one | |
| Identifiers | |
3D model (JSmol)
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| Properties | |
| C11H6N2O | |
| Molar mass | 182.182 g·mol−1 |
| Appearance | Yellow powder |
| Melting point | 229–233 °C (444–451 °F; 502–506 K) |
| Hazards | |
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| NFPA 704 (fire diamond) | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
 verify (what is   ?)
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Tracking categories (test):
1,8-Diazafluoren-9-one (DFO) is an aromatic ketone first synthesized in 1950. It is used to find fingerprints on porous surfaces.[1][2] It makes fingerprints glow when they are lit by blue-green light.[2]
DFO reacts with amino acids present in the fingerprint to form highly fluorescent derivatives. Excitation with light at ~470 nm results in emission at ~570 nm.[2]
References
- ↑ Lewkowicz, Aneta; Baranowska, Karolina; Bojarski, Piotr; Józefowicz, Marek (2019). "Solvent dependent spectroscopic properties of fingerprint reagent - 1,8-Diazafluoren-9-one" (in en). Journal of Molecular Liquids 285: 754–765. doi:10.1016/j.molliq.2019.04.110. https://linkinghub.elsevier.com/retrieve/pii/S0167732219313479.
- ↑ 2.0 2.1 2.2 Pounds, C. Anthony; Grigg, Ronald; Mongkolaussavaratana, Theeravat (1 January 1990). "The Use of 1,8-Diazafluoren-9-one (DFO) for the Fluorescent Detection of Latent Fingerprints on Paper. A Preliminary Evaluation". Journal of Forensic Sciences 35 (1): 169–175. doi:10.1520/JFS12813J.
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