A perfluorinated ketone, 2-trifluoromethyl-1,1,1,2,4,4,5,5,5-nonafluoro-3-pentanone, has been investigated to determine several physical and spectroscopic properties. It was found to exhibit fluorescence similar to that of acetone, emitting over the 360–550 nm range with a peak near 420 nm when excited at 355 nm. This compound's emission is nearly unaffected over a wide range of temperature and pressure in an argon bath gas. Its fluorescence efficiency was found to be three times higher than that of acetone. Combined with low reactivity and thermal stability up to 500°C, this makes the material an excellent tracer for spectroscopic measurement techniques.
Jonas P.R. Gustavsson and Corin Segal, "Fluorescence Spectrum of 2-Trifluoromethyl-1,1,1,2,4,4,5,5,5-nonafluoro-3-pentanone," Appl. Spectrosc. 61, 903-907 (2007)