1,8-Diazafluoren-9-one
Encyclopedia
1,8-Diazafluoren-9-one, also known as DFO, is a chemical that is used to find fingerprint
s on porous surfaces. It makes fingerprints glow when they are lit by blue-green light.
DFO reacts with amino acid
s present in the fingerprint to form highly fluorescent derivatives. Excitation with light at ~470 nm results in emission at ~570 nm.
Fingerprint
A fingerprint in its narrow sense is an impression left by the friction ridges of a human finger. In a wider use of the term, fingerprints are the traces of an impression from the friction ridges of any part of a human hand. A print from the foot can also leave an impression of friction ridges...
s on porous surfaces. It makes fingerprints glow when they are lit by blue-green light.
DFO reacts with amino acid
Amino acid
Amino acids are molecules containing an amine group, a carboxylic acid group and a side-chain that varies between different amino acids. The key elements of an amino acid are carbon, hydrogen, oxygen, and nitrogen...
s present in the fingerprint to form highly fluorescent derivatives. Excitation with light at ~470 nm results in emission at ~570 nm.